GridView 72般高招

2012-11-23

GridView 72般绝技主页：http://blog.csdn.net/21aspnet/?????????为了写本文，又搭工又搭料，累的2天2宿没睡

GridView 72般绝技

主页：http://blog.csdn.net/21aspnet/?????????

为了写本文，又搭工又搭料，累的2天2宿没睡觉，这篇文章实在是耗费我太多的心血，版权永远属于CSDN社区的清清月儿，请不要试图修改本文，破坏全文的完整性，希望您尊重我的劳动成果！

快速预览：
GridView无代码分页排序
GridView选中，编辑，取消，删除
GridView正反双向排序
GridView和下拉菜单DropDownList结合
GridView和CheckBox结合
鼠标移到GridView某一行时改变该行的背景色方法一
鼠标移到GridView某一行时改变该行的背景色方法二
GridView实现删除时弹出确认对话框
GridView实现自动编号
GridView实现自定义时间货币等字符串格式
GridView实现用“...”代替超长字符串
GridView一般换行与强制换行
GridView显示隐藏某一列
GridView弹出新页面/弹出新窗口
GridView固定表头(不用javascript只用CSS，2行代码，很好用)
GridView合并表头多重表头无错完美版（以合并3列3行举例）
GridView突出显示某一单元格（例如金额低于多少，分数不及格等）
GridView加入自动求和求平均值小计
GridView数据导入Excel/Excel数据读入GridView

1.GridView无代码分页排序：

效果图：
GridView 72般高招
1.AllowSorting设为True，aspx代码中是AllowSorting="True"；
2.默认1页10条，如果要修改每页条数，修改PageSize即可，在aspx代码中是PageSize="12"。
3.默认的是单向排序的，右击GridView弹出“属性”，选择AllowSorting为True即可。

2.GridView选中，编辑，取消，删除：

效果图：
GridView 72般高招

后台代码：
你可以使用sqlhelper,本文没用。代码如下：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{

//清清月儿http://blog.csdn.net/21aspnet?
??? SqlConnection sqlcon;
??? SqlCommand sqlcom;
??? string strCon = "Data Source=(local);Database=数据库名;Uid=帐号;Pwd=密码";
??? protected void Page_Load(object sender, EventArgs e)
??? {
??????? if (!IsPostBack)
??????? {
??????????? bind();
??????? }
??? }
??? protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
??? {
??????? GridView1.EditIndex = e.NewEditIndex;
??????? bind();
??? }

//删除
??? protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
??? {
??????? string sqlstr = "delete from?表 where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
??????? sqlcon = new SqlConnection(strCon);
??????? sqlcom = new SqlCommand(sqlstr,sqlcon);
??????? sqlcon.Open();
??????? sqlcom.ExecuteNonQuery();
??????? sqlcon.Close();
??????? bind();
??? }

//更新
??? protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
??? {
??????? sqlcon = new SqlConnection(strCon);
??????? string sqlstr = "update 表 set 字段1='"
??????????? + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',字段2='"
??????????? + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',字段3='"
??????????? + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where id='"
??????????? + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
??????? sqlcom=new SqlCommand(sqlstr,sqlcon);
??????? sqlcon.Open();
??????? sqlcom.ExecuteNonQuery();
??????? sqlcon.Close();
??????? GridView1.EditIndex = -1;
??????? bind();
??? }

//取消
??? protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
??? {
??????? GridView1.EditIndex = -1;
??????? bind();
??? }

//绑定
??? public void bind()
??? {
??????? string sqlstr = "select * from 表";
??????? sqlcon = new SqlConnection(strCon);
??????? SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
??????? DataSet myds = new DataSet();
??????? sqlcon.Open();
??????? myda.Fill(myds, "表");
??????? GridView1.DataSource = myds;
??????? GridView1.DataKeyNames = new string[] { "id" };//主键
??????? GridView1.DataBind();
??????? sqlcon.Close();
??? }
}

前台主要代码：
??????????????????????????? ... ...
<asp:GridView ID="GridView1" runat="server" CellPadding="4"
??????????????????????? ForeColor="#333333" GridLines="None" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
??????????????????????? OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit">
??????????????????????? <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" />
??????????????????????? <Columns>
??????????????????????????? <asp:BoundField DataField="身份证号码" HeaderText="用户ID" ReadOnly="True" />
??????????????????????????? <asp:BoundField DataField="姓名" HeaderText="用户姓名" />
??????????????????????????? <asp:BoundField DataField="员工性别" HeaderText="性别" />
??????????????????????????? <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
??????????????????????????? <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
??????????????????????????? <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
??????????????????????????? <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
??????????????????????? </Columns>
??????????????????????? <RowStyle ForeColor="#000066" />
??????????????????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????????????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
??????????????????????? <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
??????????????????? </asp:GridView>

3.GridView正反双向排序：
效果图：点姓名各2次的排序，点其他也一样可以。
GridView 72般高招
后台代码：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class Default3 : System.Web.UI.Page
{

//清清月儿的博客http://blog.csdn.net/21aspnet?
??? SqlConnection sqlcon;
??? string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=";
??? protected void Page_Load(object sender, EventArgs e)
??? {
??????? if (!IsPostBack)
??????? {
??????????? ViewState["SortOrder"] = "身份证号码";
??????????? ViewState["OrderDire"] = "ASC";
??????????? bind();
??????? }
??? }
??? protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
??? {
??????? string sPage = e.SortExpression;
??????? if (ViewState["SortOrder"].ToString() == sPage)
??????? {
??????????? if (ViewState["OrderDire"].ToString() == "Desc")
??????????????? ViewState["OrderDire"] = "ASC";
??????????? else
??????????????? ViewState["OrderDire"] = "Desc";
??????? }
??????? else
??????? {
??????????? ViewState["SortOrder"] = e.SortExpression;
??????? }
??????? bind();
??? }

??? public void bind()
??? {
???????
??????? string sqlstr = "select top 5 * from 飞狐工作室";
??????? sqlcon = new SqlConnection(strCon);
??????? SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
??????? DataSet myds = new DataSet();
??????? sqlcon.Open();
??????? myda.Fill(myds, "飞狐工作室");
??????? DataView view = myds.Tables["飞狐工作室"].DefaultView;
??????? string sort = (string)ViewState["SortOrder"] + " " + (string)ViewState["OrderDire"];
??????? view.Sort = sort;
??????? GridView1.DataSource = view;
??????? GridView1.DataBind();
??????? sqlcon.Close();
??? }
}

前台主要代码：
<asp:GridView ID="GridView1" runat="server" AllowSorting="True"
??????????????????????? CellPadding="3" Font-Size="9pt" OnSorting="GridView1_Sorting" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
??????????????????????? <FooterStyle BackColor="White" ForeColor="#000066" />
??????????????????????? <Columns>
???????????????????????????? <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />
??????????????????????????? <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>
??????????????????????????? <asp:BoundField DataField="员工性别" HeaderText="性别" SortExpression="员工性别"/>
??????????????????????????? <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>
???????????????????????????????
??????????????????????? </Columns>
??????????????????????? <RowStyle ForeColor="#000066" />
??????????????????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????????????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
??????????????????????? <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
??????????????????? </asp:GridView>

4.GridView和下拉菜单DropDownList结合：

效果图：
GridView 72般高招

后台代码：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class Default4 : System.Web.UI.Page
{
??? SqlConnection sqlcon;
??? string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
??? protected void Page_Load(object sender, EventArgs e)
??? {
??????? DropDownList ddl;
??????? if (!IsPostBack)
??????? {
??????????? string sqlstr = "select top 5 * from 飞狐工作室";
??????????? sqlcon = new SqlConnection(strCon);
??????????? SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
??????????? DataSet myds = new DataSet();
??????????? sqlcon.Open();
??????????? myda.Fill(myds, "飞狐工作室");
??????????? GridView1.DataSource = myds;
??????????? GridView1.DataBind();
??????????? for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
??????????? {
??????????????? DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i];
??????????????? if (Convert.ToString(mydrv["员工性别"]).Trim() == "True")
??????????????? {
??????????????????? ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");
??????????????????? ddl.SelectedIndex = 0;
??????????????? }
??????????????? if (Convert.ToString(mydrv["员工性别"]).Trim() == "False")
??????????????? {
??????????????????? ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1");
??????????????????? ddl.SelectedIndex = 1;
??????????????? }
??????????? }
??????????? sqlcon.Close();
??????? }
??? }
??? public SqlDataReader ddlbind()
??? {
??????? string sqlstr = "select distinct 员工性别 from 飞狐工作室";
??????? sqlcon = new SqlConnection(strCon);
??????? SqlCommand sqlcom = new SqlCommand(sqlstr, sqlcon);
??????? sqlcon.Open();
??????? return sqlcom.ExecuteReader();
??? }

前台主要代码：
<asp:GridView ID="GridView1" runat="server" AllowSorting="True"
??????????????????????? CellPadding="3" Font-Size="9pt"? BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
??????????????????????? <FooterStyle BackColor="White" ForeColor="#000066" />
??????????????????????? <Columns>
???????????????????????????? <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />
??????????????????????????? <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>
??????????????????????????? <asp:TemplateField HeaderText="员工性别">
??????????????????????????????? <ItemTemplate>
??????????????????????????????????? <asp:DropDownList ID="DropDownList1" runat="server" DataSource='<%# ddlbind()%>' DataValueField="员工性别" DataTextField="员工性别">
??????????????????????????????????? </asp:DropDownList>
??????????????????????????????? </ItemTemplate>
??????????????????????????? </asp:TemplateField>
??????????????????????????? <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>
???????????????????????????????
??????????????????????? </Columns>
??????????????????????? <RowStyle ForeColor="#000066" />
??????????????????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????????????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
??????????????????????? <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
??????????????????? </asp:GridView>

5.GridView和CheckBox结合：

效果图：
GridView 72般高招

后台代码：

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class Default5 : System.Web.UI.Page
{
//清清月儿http://blog.csdn.net/21aspnet
??? SqlConnection sqlcon;
??? string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
??? protected void Page_Load(object sender, EventArgs e)
??? {
??????? if (!IsPostBack)
??????? {
??????????? bind();
??????? }
??? }
??? protected void CheckBox2_CheckedChanged(object sender, EventArgs e)
??? {
??????? for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
??????? {
??????????? CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
??????????? if (CheckBox2.Checked == true)
??????????? {
??????????????? cbox.Checked = true;
??????????? }
??????????? else
??????????? {
??????????????? cbox.Checked = false;
??????????? }
??????? }
??? }
??? protected void Button2_Click(object sender, EventArgs e)
??? {
??????? sqlcon = new SqlConnection(strCon);
??????? SqlCommand sqlcom;
??????? for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
??????? {
??????????? CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
??????????? if (cbox.Checked == true)
??????????? {

??????????????? string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[i].Value + "'";
??????????????? sqlcom = new SqlCommand(sqlstr, sqlcon);
??????????????? sqlcon.Open();
??????????????? sqlcom.ExecuteNonQuery();
??????????????? sqlcon.Close();
??????????? }
??????? }
??????? bind();
??? }
??? protected void Button1_Click(object sender, EventArgs e)
??? {
??????? CheckBox2.Checked = false;
??????? for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
??????? {
??????????? CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1");
??????????? cbox.Checked = false;
??????? }
??? }
??? public void bind()
??? {
??????? string sqlstr = "select top 5 * from 飞狐工作室";
??????? sqlcon = new SqlConnection(strCon);
??????? SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
??????? DataSet myds = new DataSet();
??????? sqlcon.Open();
??????? myda.Fill(myds, "tb_Member");
??????? GridView1.DataSource = myds;
??????? GridView1.DataKeyNames = new string[] { "身份证号码" };
??????? GridView1.DataBind();
??????? sqlcon.Close();
??? }
}

前台主要代码：

<asp:GridView ID="GridView1" runat="server" AllowSorting="True"
??????????????????????? CellPadding="3" Font-Size="9pt"? BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px">
??????????????????????? <FooterStyle BackColor="White" ForeColor="#000066" />
??????????????????????? <Columns>
???????????????????????????? <asp:TemplateField>
??????????????????????????????? <ItemTemplate>
??????????????????????????????????? <asp:CheckBox ID="CheckBox1" runat="server" />
??????????????????????????????? </ItemTemplate>
??????????????????????????? </asp:TemplateField>
???????????????????????????? <asp:BoundField DataField="身份证号码" HeaderText="用户ID" SortExpression="身份证号码" />
??????????????????????????? <asp:BoundField DataField="姓名" HeaderText="用户姓名" SortExpression="姓名"/>
???????????????????????????
??????????????????????????? <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/>
???????????????????????????????
??????????????????????? </Columns>
??????????????????????? <RowStyle ForeColor="#000066" />
??????????????????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????????????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
??????????????????????? <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
??????????????????? </asp:GridView>
???????????????????? <asp:CheckBox ID="CheckBox2" runat="server" Font-Size="9pt" OnCheckedChanged="CheckBox2_CheckedChanged"
??????????????????????? Text="全选" />
??????????????????? <asp:Button ID="Button1" runat="server" Font-Size="9pt" Text="取消" OnClick="Button1_Click" />
??????????????????? <asp:Button ID="Button2" runat="server" Font-Size="9pt" Text="删除" OnClick="Button2_Click" />

6.鼠标移到GridView某一行时改变该行的背景色方法一：

效果图：

做法：
双击GridView的OnRowDataBound事件；
在后台的GridView1_RowDataBound()方法添加代码，最后代码如下所示：
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
??? {
??????? int i;
??????? //执行循环，保证每条数据都可以更新
??????? for (i = 0; i < GridView1.Rows.Count; i++)
??????? {
??????????? //首先判断是否是数据行
??????????? if (e.Row.RowType == DataControlRowType.DataRow)
??????????? {
??????????????? //当鼠标停留时更改背景色
??????????????? e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");
??????????????? //当鼠标移开时还原背景色
??????????????? e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");
??????????? }
??????? }

??? }

前台代码：
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
??? <title>实现鼠标划过改变GridView的行背景色清清月儿http://blog.csdn.net/21aspnet?</title>
</head>
<body>
??? <form id="form1" runat="server">
??? <div>
??????? <asp:GridView ID="GridView1" runat="server" DataKeyNames="身份证号码"
??????????? DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
??????????? <Columns>
??????????????? <asp:BoundField DataField="身份证号码" HeaderText="身份证号码" ReadOnly="True" SortExpression="身份证号码" />
??????????????? <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />
??????????????? <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址" />
??????????????? <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
??????????? </Columns>
??????????? <FooterStyle BackColor="White" ForeColor="#000066" />
??????????? <RowStyle ForeColor="#000066" />
??????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
??????????? <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
??????? </asp:GridView>
??????? <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北风贸易ConnectionString1 %>"
??????????? SelectCommand="SELECT top 5 [身份证号码], [姓名], [员工性别], [家庭住址], [邮政编码] FROM [飞狐工作室]" DataSourceMode="DataReader"></asp:SqlDataSource>
???
??? </div>
??? </form>
</body>
</html>

7.鼠标移到GridView某一行时改变该行的背景色方法二：

效果图：

做法：和上面的一样就是代码不同
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
??? {
??????? //int i;
??????? ////执行循环，保证每条数据都可以更新
??????? //for (i = 0; i < GridView1.Rows.Count; i++)
??????? //{
??????? //??? //首先判断是否是数据行
??????? //??? if (e.Row.RowType == DataControlRowType.DataRow)
??????? //??? {
??????? //??????? //当鼠标停留时更改背景色
??????? //??????? e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'");
??????? //??????? //当鼠标移开时还原背景色
??????? //??????? e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c");
??????? //??? }
??????? //}
??????? //如果是绑定数据行
??????? if (e.Row.RowType == DataControlRowType.DataRow)
??????? {
??????????? //鼠标经过时，行背景色变
??????????? e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");
??????????? //鼠标移出时，行背景色变
??????????? e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");
??????? }

??? }

8.GridView实现删除时弹出确认对话框：

效果图：

实现方法：
双击GridView的OnRowDataBound事件；
在后台的GridView1_RowDataBound()方法添加代码，最后代码如下所示：

??? protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
??? {
??????? //如果是绑定数据行
??????? if (e.Row.RowType == DataControlRowType.DataRow)
??????? {
?????????????if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
??????????? {
??????????????? ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除："" + e.Row.Cells[1].Text + ""吗?')");
??????????? }
??????? }

??? }

9.GridView实现自动编号：

效果图：

实现方法：
双击GridView的OnRowDataBound事件；
在后台的GridView1_RowDataBound()方法添加代码，最后代码如下所示：
??? protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
??? {
??????? //如果是绑定数据行 //清清月儿http://blog.csdn.net/21aspnet?
??????? if (e.Row.RowType == DataControlRowType.DataRow)
??????? {
??????????? ////鼠标经过时，行背景色变
??????????? //e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");
??????????? ////鼠标移出时，行背景色变
??????????? //e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

??????????? ////当有编辑列时，避免出错，要加的RowState判断
??????????? //if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
??????????? //{
??????????? //??? ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除："" + e.Row.Cells[1].Text + ""吗?')");
??????????? //}

??????? }
??????? if (e.Row.RowIndex != -1)
??????? {
??????????? int id = e.Row.RowIndex + 1;
??????????? e.Row.Cells[0].Text = id.ToString();
??????? }

??? }

注意这时最好把前台的第一列的表头该为“编号”，因为以前的第一列被“吃掉”了。
<asp:GridView ID="GridView1" runat="server" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
??????????????????????? OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
??????????????????????? <FooterStyle BackColor="White" ForeColor="#000066" />
??????????????????????? <Columns>
??????????????????????????? <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
??????????????????????????? <asp:BoundField DataField="姓名" HeaderText="用户姓名" />
??????????????????????????? <asp:BoundField DataField="员工性别" HeaderText="性别" />
??????????????????????????? <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />
??????????????????????????? <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
??????????????????????????? <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
??????????????????????????? <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
??????????????????????? </Columns>
??????????????????????? <RowStyle ForeColor="#000066" />
??????????????????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????????????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
??????????????????????? <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
??????????????????? </asp:GridView>

10.GridView实现自定义时间货币等字符串格式：

效果图：
图1-未格式化前

图2-格式化后

解决方法：
在asp.net 2.0中，如果要在绑定列中显示比如日期格式等，如果用下面的方法是显示不了的

主要是由于htmlencode属性默认设置为true,已防止XSS攻击，安全起见而用的，所以，可以有以下两种方法解决

1、

将htmlencode设置为false即可

另外的解决方法为，使用模版列

前台代码：
<asp:GridView ID="GridView1" runat="server" DataKeyNames="身份证号码"
??????????? DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound">
??????????? <Columns>
??????????????? <asp:BoundField DataField="身份证号码" HeaderText="身份证号码" ReadOnly="True" SortExpression="身份证号码" />
??????????????? <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" />
??????????????? <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
??????????????? <asp:BoundField DataField="出生日期" HeaderText="出生日期" SortExpression="出生日期" />
??????????????? <asp:BoundField DataField="起薪" HeaderText="起薪" SortExpression="起薪" />
??????????? </Columns>
??????????? <FooterStyle BackColor="White" ForeColor="#000066" />
??????????? <RowStyle ForeColor="#000066" />
??????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
??????????? <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
??????? </asp:GridView>
??????? <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北风贸易ConnectionString1 %>"
??????????? SelectCommand="SELECT top 5 [出生日期], [起薪], [身份证号码], [姓名], [家庭住址], [邮政编码] FROM [飞狐工作室]" DataSourceMode="DataReader"></asp:SqlDataSource>

附录-常用格式化公式：
{0:C}? 货币；
{0:D4}由0填充的4个字符宽的字段中显示整数；
{0:000.0}四舍五入小数点保留第几位有效数字；
{0:N2}小数点保留2位有效数字；{0:N2}%?? 小数点保留2位有效数字加百分号；
{0:D}长日期；{0:d}短日期；{0:yy-MM-dd}?? 例如07-3-25；；{0:yyyy-MM-dd}? 例如2007-3-25

?11.GridView实现用“...”代替超长字符串：

效果图：

解决方法：数据绑定后过滤每一行即可
for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
??????? {
??????????? DataRowView mydrv;
??????????? string gIntro;
??????????? if (GridView1.PageIndex == 0)
??????????? {
??????????????? mydrv = myds.Tables["飞狐工作室"].DefaultView[i];//表名
??????????????? gIntro = Convert.ToString(mydrv["家庭住址"]);//所要处理的字段
??????????????? GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
??????????? }
??????????? else
??????????? {
??????????????? mydrv = myds.Tables["飞狐工作室"].DefaultView[i + (5 * GridView1.PageIndex)];
??????????????? gIntro = Convert.ToString(mydrv["家庭住址"]);
??????????????? GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
??????????? }
??????? }?

调用的方法：

??? public string SubStr(string sString, int nLeng)
??? {
??????? if (sString.Length <= nLeng)
??????? {
??????????? return sString;
??????? }
??????? string sNewStr = sString.Substring(0, nLeng);
??????? sNewStr = sNewStr + "...";
??????? return sNewStr;
??? }

后台全部代码：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
??? SqlConnection sqlcon;
??? SqlCommand sqlcom;
??? string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
??? protected void Page_Load(object sender, EventArgs e)
??? {
??????? if (!IsPostBack)
??????? {
??????????? ViewState["SortOrder"] = "身份证号码";
??????????? ViewState["OrderDire"] = "ASC";
??????????? bind();
??????? }
??? }
??? protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
??? {
??????? GridView1.EditIndex = e.NewEditIndex;
??????? bind();
??? }
??? protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
??? {
??????? string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
??????? sqlcon = new SqlConnection(strCon);
??????? sqlcom = new SqlCommand(sqlstr,sqlcon);
??????? sqlcon.Open();
??????? sqlcom.ExecuteNonQuery();
??????? sqlcon.Close();
??????? bind();
??? }
??? protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
??? {
??????? sqlcon = new SqlConnection(strCon);
??????? string sqlstr = "update 飞狐工作室 set 姓名='"
??????????? + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
??????????? + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='"
??????????? + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
??????? sqlcom=new SqlCommand(sqlstr,sqlcon);
??????? sqlcon.Open();
??????? sqlcom.ExecuteNonQuery();
??????? sqlcon.Close();
??????? GridView1.EditIndex = -1;
??????? bind();
??? }
??? protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
??? {
??????? GridView1.EditIndex = -1;
??????? bind();
??? }
??? public void bind()
??? {
??????? string sqlstr = "select top 5 * from 飞狐工作室";
??????? sqlcon = new SqlConnection(strCon);
??????? SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
??????? DataSet myds = new DataSet();
??????? sqlcon.Open();
??????? myda.Fill(myds, "飞狐工作室");
??????? GridView1.DataSource = myds;
??????? GridView1.DataKeyNames = new string[] { "身份证号码" };
??????? GridView1.DataBind();
??????? for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
??????? {
??????????? DataRowView mydrv;
??????????? string gIntro;
??????????? if (GridView1.PageIndex == 0)
??????????? {
??????????????? mydrv = myds.Tables["飞狐工作室"].DefaultView[i];
??????????????? gIntro = Convert.ToString(mydrv["家庭住址"]);
??????????????? GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
??????????? }
??????????? else
??????????? {
??????????????? mydrv = myds.Tables["飞狐工作室"].DefaultView[i + (5 * GridView1.PageIndex)];
??????????????? gIntro = Convert.ToString(mydrv["家庭住址"]);
??????????????? GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2);
??????????? }
??????? }
???????
??????? sqlcon.Close();
??? }
??? public string SubStr(string sString, int nLeng)
??? {
??????? if (sString.Length <= nLeng)
??????? {
??????????? return sString;
??????? }
??????? string sNewStr = sString.Substring(0, nLeng);
??????? sNewStr = sNewStr + "...";
??????? return sNewStr;
??? }
??? protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
??? {
??????? //如果是绑定数据行?
??????? if (e.Row.RowType == DataControlRowType.DataRow)
??????? {
??????????? ////鼠标经过时，行背景色变
??????????? //e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'");
??????????? ////鼠标移出时，行背景色变
??????????? //e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

??????? }
??????? if (e.Row.RowIndex != -1)
??????? {
??????????? int id = e.Row.RowIndex + 1;
??????????? e.Row.Cells[0].Text = id.ToString();
??????? }

??? }
}

?11.GridView一般换行与强制换行：

效果图：

首先设置<asp:BoundField DataField="家庭住址" HeaderText="家庭住址"? ItemStyle-Width="100" />
gridview里有一列绑定的数据很长，显示的时候在一行里面显示，页面拉得很宽。
原因是连续英文段为一个整体导致的，在RowDataBound中添加上了一句e.Row.Cells[2].Style.Add("word-break", "break-all")就可以。

如果要给所有的列增加此属性：
?protected void Page_Load(object sender, EventArgs e)
??? {
??????? //正常换行
??????? GridView1.Attributes.Add("style", "word-break:keep-all;word-wrap:normal");
??????? //下面这行是自动换行
??????? GridView1.Attributes.Add("style", "word-break:break-all;word-wrap:break-word");
??????? if (!IsPostBack)
??????? {
?????????????bind();//调用数据绑定即可
??????? }
??? }
总之：善用CSS的word-break:break-all;word-wrap:break-word属性即可，这个属性是通用的对于顽固的南换行问题都可以解决，不局限于GridView。

?12.GridView显示隐藏某一列：
本方案为月儿独创，不同于网上其他方式，我觉得用一个CheckBox更人性化，这样可以隐藏不必要的列，让用户自己选择需要出现的列，在处理多列时这是一个很好的解决方案！

效果图：
图1-开始

图2-点击显示的CheckBox后

解决方案：
public void bind()
??? {
??????? string sqlstr = "select top 5 * from 飞狐工作室";
??????? sqlcon = new SqlConnection(strCon);
??????? SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
??????? DataSet myds = new DataSet();
??????? sqlcon.Open();
??????? myda.Fill(myds, "飞狐工作室");
??????? GridView1.DataSource = myds;
??????? GridView1.DataKeyNames = new string[] { "身份证号码" };
??????? GridView1.DataBind();
??????? sqlcon.Close();
??????? GridView1.Columns[3].Visible = false;//一开始隐藏
??????? CheckBox1.Checked = false;//如果不这样后面的代码会把他True
??? }

双击CheckBox1，在CheckedChanged方法里写上代码，最后代码如下：
protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
??? {
???????? GridView1.Columns[3].Visible=! GridView1.Columns[3].Visible;
???????? Response.Write("GridView1的第4列现在的显示隐藏状态是："+GridView1.Columns[3].Visible.ToString());
??? }

注意：CheckBox1的AutoPostBack要True！

后台全部代码如下：

public partial class _Default : System.Web.UI.Page
{
??? SqlConnection sqlcon;
??? SqlCommand sqlcom;?
??? string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
??? protected void Page_Load(object sender, EventArgs e)
??? {
??????? if (!IsPostBack)
??????? {
??????????? ViewState["SortOrder"] = "身份证号码";
??????????? ViewState["OrderDire"] = "ASC";
??????????? bind();
?????????????????? }
??? }
??? protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
??? {
??????? GridView1.EditIndex = e.NewEditIndex;
??????? bind();
??? }
??? protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
??? {
??????? string sqlstr = "delete from 飞狐工作室 where 身份证号码='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
??????? sqlcon = new SqlConnection(strCon);
??????? sqlcom = new SqlCommand(sqlstr,sqlcon);
??????? sqlcon.Open();
??????? sqlcom.ExecuteNonQuery();
??????? sqlcon.Close();
??????? bind();
??? }
??? protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
??? {
??????? sqlcon = new SqlConnection(strCon);
??????? string sqlstr = "update 飞狐工作室 set 姓名='"
??????????? + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
??????????? + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='"
??????????? + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
??????? sqlcom=new SqlCommand(sqlstr,sqlcon);
??????? sqlcon.Open();
??????? sqlcom.ExecuteNonQuery();
??????? sqlcon.Close();
??????? GridView1.EditIndex = -1;
??????? bind();
??? }
??? protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
??? {
??????? GridView1.EditIndex = -1;
??????? bind();
??? }
??? public void bind()
??? {
??????? string sqlstr = "select top 5 * from 飞狐工作室";
??????? sqlcon = new SqlConnection(strCon);
??????? SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
??????? DataSet myds = new DataSet();
??????? sqlcon.Open();
??????? myda.Fill(myds, "飞狐工作室");
??????? GridView1.DataSource = myds;
??????? GridView1.DataKeyNames = new string[] { "身份证号码" };
??????? GridView1.DataBind();
??????? sqlcon.Close();
??????? GridView1.Columns[3].Visible = false;
??????? CheckBox1.Checked = false;
??? }
??? protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
??? {
???????? GridView1.Columns[3].Visible=! GridView1.Columns[3].Visible;
???????? Response.Write("GridView1的第4列现在的显示隐藏状态是："+GridView1.Columns[3].Visible.ToString());
??? }
}

前台代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
??? <title>GridView显示隐藏列清清月儿http://blog.csdn.net/21aspnet?</title>
</head>
<body style="font-size=12px">
??? <form id="form1" runat="server">
??? <div>
?????????????????? <asp:GridView ID="GridView1" runat="server" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
??????????????????????? OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"? >
??????????????????????? <FooterStyle BackColor="White" ForeColor="#000066" />
??????????????????????? <Columns>
??????????????????????????? <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
??????????????????????????? <asp:BoundField DataField="姓名" HeaderText="用户姓名" />
??????????????????????????? <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
??????????????????????????? <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"? />
??????????????????????????? <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
??????????????????????????? <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
??????????????????????????? <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
??????????????????????? </Columns>
??????????????????????? <RowStyle ForeColor="#000066" />
??????????????????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????????????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
??????????????????????? <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
??????????????????? </asp:GridView>
??????? <asp:CheckBox ID="CheckBox1" runat="server" Font-Size="12px"
??????????? OnCheckedChanged="CheckBox1_CheckedChanged" Text="显示隐藏家庭住址" /></div>
??? </form>
</body>
</html>

?13.GridView弹出新页面/弹出制定大小位置新窗口：

效果图：

方案一：简单的方法，新窗口不固定大小
?<asp:GridView ID="GridView1" runat="server" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
??????????????????????? OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"? >
??????????????????????? <FooterStyle BackColor="White" ForeColor="#000066" />
??????????????????????? <Columns>
??????????????????????????? <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
??????????????????????????? <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
??????????????????????????? <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"? />
??????????????????????????? <asp:HyperLinkField HeaderText="姓名" Text="姓名" DataNavigateUrlFields=" 姓名" DataNavigateUrlFormatString="Default6.aspx?GoodsID={0}" Target="mainframe" NavigateUrl="~/Default6.aspx" DataTextField="姓名" >
??????????????????? </asp:HyperLinkField>
??????????????????????????? <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
??????????????????????????? <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
??????????????????????????? <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
??????????????????????? </Columns>
??????????????????????? <RowStyle ForeColor="#000066" />
??????????????????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????????????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
??????????????????????? <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
??????????????????? </asp:GridView>
DataNavigateUrlFields是链接的字段名，DataNavigateUrlFormatString是路径。

方案二：精确控制弹出窗口大小位置
<asp:HyperLinkColumn DataNavigateUrlField="EmployeeID" DataNavigateUrlFormatString="javascript:varwin=window.open('detail.aspx?ID={0}',null,'width=300,height=200');window.Close();"
???????DataTextField="LastName" HeaderText="LastName"></asp:HyperLinkColumn>

使用的是结合javascript的window.open方法，关于window.open的参数网上有很多帖子，本站也有许多参考
弹出窗口大全 http://blog.csdn.net/21aspnet/archive/2004/10/25/150231.aspx?? 即可！

??14.GridView固定表头(不用javascript只用CSS!，很好用)：

效果图：

代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
??? <title>GridView固定表头清清月儿http://blog.csdn.net/21aspnet?</title>
??????? <style>
.Freezing
?? {
???
?? position:relative ;
?? table-layout:fixed;
?? top:expression_r(this.offsetParent.scrollTop);??
?? z-index: 10;
?? }

.Freezing th{text-overflow:ellipsis;overflow:hidden;white-space: nowrap;padding:2px;}
</style>
</head>
<body style="font-size=12px">
??? <form id="form1" runat="server">
??? <div style="overflow-y: scroll; height: 200px;width:300px" id="dvBody">
?????????????????? <asp:GridView ID="GridView1" runat="server"??? CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
??????????????????????? OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated"? >
??????????????????????? <FooterStyle BackColor="White" ForeColor="#000066" />
??????????????????????? <Columns>
??????????????????????????? <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
??????????????????????????? <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" SortExpression="邮政编码" />
??????????????????????????? <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"? />
??????????????????????????? <asp:BoundField DataField="姓名" HeaderText="姓名"? />
???????????????????????????
??????????????????????? </Columns>
??????????????????????? <RowStyle ForeColor="#000066" />
??????????????????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????????????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"? CssFont-Bold="True" ForeColor="White" Css>

15.GridView合并表头多重表头无错完美版（以合并3列3行举例）

效果图：

后台代码：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Drawing;
public partial class _Default : System.Web.UI.Page
{
??? SqlConnection sqlcon;
??? SqlCommand sqlcom;
??? string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
??? protected void Page_Load(object sender, EventArgs e)
??? {
??????? if (!IsPostBack)
??????? {
??????????? bind();
???????????
??????? }
??? }
??? protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
??? {
??????? GridView1.EditIndex = e.NewEditIndex;
??????? bind();
??? }
??? protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
??? {
??????? sqlcon = new SqlConnection(strCon);
??????? string sqlstr = "update 飞狐工作室 set 姓名='"
??????????? + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
??????????? + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='"
??????????? + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
??????? sqlcom=new SqlCommand(sqlstr,sqlcon);
??????? sqlcon.Open();
??????? sqlcom.ExecuteNonQuery();
??????? sqlcon.Close();
??????? GridView1.EditIndex = -1;
??????? bind();
??? }
??? protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
??? {
??????? GridView1.EditIndex = -1;
??????? bind();
??? }
??? public void bind()
??? {
??????? string sqlstr = "select top 10 * from 飞狐工作室";
??????? sqlcon = new SqlConnection(strCon);
??????? SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
??????? DataSet myds = new DataSet();
??????? sqlcon.Open();
??????? myda.Fill(myds, "飞狐工作室");
??????? GridView1.DataSource = myds;
??????? GridView1.DataKeyNames = new string[] { "身份证号码" };
??????? GridView1.DataBind();
??????? sqlcon.Close();
??? }

//这里就是解决方案
??? protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
??? {
??????? switch (e.Row.RowType)
??????? {
??????????? case DataControlRowType.Header:
??????????????? //第一行表头
??????????????? TableCellCollection tcHeader = e.Row.Cells;
??????????????? tcHeader.Clear();
??????????????? tcHeader.Add(new TableHeaderCell());
??????????????? tcHeader[0].Attributes.Add("rowspan", "3");?//跨Row
??????????????? tcHeader[0].Attributes.Add("bgcolor", "white");
??????????????? tcHeader[0].Text = "";
??????????????? tcHeader.Add(new TableHeaderCell());
??????????????? //tcHeader[1].Attributes.Add("bgcolor", "Red");
??????????????? tcHeader[1].Attributes.Add("colspan", "6");?//跨Column
??????????????? tcHeader[1].Text = "全部信息</th></tr><tr>";

??????????????? //第二行表头
??????????????? tcHeader.Add(new TableHeaderCell());
??????????????? tcHeader[2].Attributes.Add("bgcolor", "DarkSeaGreen");
??????????????? tcHeader[2].Text = "身份证号码";
??????????????? tcHeader.Add(new TableHeaderCell());
??????????????? tcHeader[3].Attributes.Add("bgcolor", "LightSteelBlue");
??????????????? tcHeader[3].Attributes.Add("colspan", "2");
??????????????? tcHeader[3].Text = "基本信息";
??????????????? tcHeader.Add(new TableHeaderCell());
??????????????? tcHeader[4].Attributes.Add("bgcolor", "DarkSeaGreen");
??????????????? tcHeader[4].Text = "福利";
??????????????? tcHeader.Add(new TableHeaderCell());
??????????????? tcHeader[5].Attributes.Add("bgcolor", "LightSteelBlue");
??????????????? tcHeader[5].Attributes.Add("colspan", "2");
??????????????? tcHeader[5].Text = "联系方式</th></tr><tr>";

??????????????? //第三行表头
??????????????? tcHeader.Add(new TableHeaderCell());
??????????????? tcHeader[6].Attributes.Add("bgcolor", "Khaki");
??????????????? tcHeader[6].Text = "身份证号码";
??????????????? tcHeader.Add(new TableHeaderCell());
??????????????? tcHeader[7].Attributes.Add("bgcolor", "Khaki");
??????????????? tcHeader[7].Text = "姓名";
??????????????? tcHeader.Add(new TableHeaderCell());
??????????????? tcHeader[8].Attributes.Add("bgcolor", "Khaki");
??????????????? tcHeader[8].Text = "出生日期";
??????????????? tcHeader.Add(new TableHeaderCell());
??????????????? tcHeader[9].Attributes.Add("bgcolor", "Khaki");
??????????????? tcHeader[9].Text = "薪水";
??????????????? tcHeader.Add(new TableHeaderCell());
??????????????? tcHeader[10].Attributes.Add("bgcolor", "Khaki");
??????????????? tcHeader[10].Text = "家庭住址";
??????????????? tcHeader.Add(new TableHeaderCell());
??????????????? tcHeader[11].Attributes.Add("bgcolor", "Khaki");
??????????????? tcHeader[11].Text = "邮政编码";
??????????????? break;
??????? }
??? }
}

前台：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
??? <title>GridView合并多重表头表头清清月儿http://blog.csdn.net/21aspnet?</title>
</head>
<body >
??? <form id="form1" runat="server">
??? <div? >
?????????????????? <asp:GridView ID="GridView1" runat="server"??? CellPadding="3"? OnRowEditing="GridView1_RowEditing"
??????????????????????? OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated"? >
??????????????????????? <FooterStyle BackColor="White" ForeColor="#000066" />
??????????????????????? <Columns>
??????????????????????????? <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
??????????????????????????? <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
??????????????????????????? <asp:BoundField DataField="姓名" HeaderText="姓名"? />
??????????????????????????? <asp:BoundField DataField="出生日期" HeaderText="邮政编码"? />
???????????????????????????? <asp:BoundField DataField="起薪" HeaderText="起薪"? />
??????????????????????????? <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"? />
??????????????????????????? <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
??????????????????????????
??????????????????????? </Columns>
??????????????????????? <RowStyle ForeColor="#000066" />
??????????????????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????????????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"? CssFont-Bold="True" ForeColor="White" />
??????????????????? </asp:GridView>
??????? </div>

??? </form>
</body>
</html>

16.GridView突出显示某一单元格（例如金额低于多少，分数不及格等）

效果图：

解决方案：主要是绑定后过滤
?GridView1.DataBind();
??????? for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
??????? {
??????????? DataRowView mydrv = myds.Tables["飞狐工作室"].DefaultView[i];
??????????? string score = Convert.ToString(mydrv["起薪"]);
??????????? if (Convert.ToDouble(score) < 34297.00)//大家这里根据具体情况设置可能ToInt32等等
??????????? {
??????????????? GridView1.Rows[i].Cells[4].BackColor = System.Drawing.Color.Red;
??????????? }
??????? }
??????? sqlcon.Close();

全部后台代码：

public partial class Default7 : System.Web.UI.Page
{
??? SqlConnection sqlcon;
??? SqlCommand sqlcom;
??? string strCon = "Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa";
??? protected void Page_Load(object sender, EventArgs e)
??? {
??????? if (!IsPostBack)
??????? {
??????????? bind();

前台代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
??? <title>GridView突出显示某一单元格清清月儿http://blog.csdn.net/21aspnet?</title>
</head>
<body >
??? <form id="form1" runat="server">
??? <div? >
?????????????????? <asp:GridView ID="GridView1" runat="server"??? CellPadding="3"? OnRowEditing="GridView1_RowEditing"
??????????????????????? OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"? >
??????????????????????? <FooterStyle BackColor="White" ForeColor="#000066" />
??????????????????????? <Columns>
??????????????????????????? <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
??????????????????????????? <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
??????????????????????????? <asp:BoundField DataField="姓名" HeaderText="姓名"? />
??????????????????????????? <asp:BoundField DataField="出生日期" HeaderText="邮政编码"? />
???????????????????????????? <asp:BoundField DataField="起薪" HeaderText="起薪"? DataFormatString="{0:C}" HtmlEncode="false"/>
??????????????????????????? <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"? />
??????????????????????????? <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
??????????????????????????
??????????????????????? </Columns>
??????????????????????? <RowStyle ForeColor="#000066" />
??????????????????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????????????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"? CssFont-Bold="True" ForeColor="White" />
??????????????????? </asp:GridView>
??????? </div>

??? </form>
</body>
</html>

?17.GridView加入自动求和求平均值小计

效果图： GridView 72般高招
解决方案：????
private double sum = 0;//取指定列的数据和，你要根据具体情况对待可能你要处理的是int
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
??? {
???????
??????? if (e.Row.RowIndex >= 0)
??????? {
??????????? sum += Convert.ToDouble(e.Row.Cells[6].Text);
??????? }
??????? else if (e.Row.RowType == DataControlRowType.Footer)
??????? {
??????????? e.Row.Cells[5].Text = "总薪水为：";
??????????? e.Row.Cells[6].Text = sum.ToString();
??????????? e.Row.Cells[3].Text = "平均薪水为：";
??????????? e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString();
???????????
??????? }
??? }

??????? }
??? }
??? protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
??? {
??????? GridView1.EditIndex = e.NewEditIndex;
??????? bind();
??? }
??? protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
??? {
??????? sqlcon = new SqlConnection(strCon);
??????? string sqlstr = "update 飞狐工作室 set 姓名='"
??????????? + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',家庭住址='"
??????????? + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where 身份证号码='"
??????????? + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
??????? sqlcom = new SqlCommand(sqlstr, sqlcon);
??????? sqlcon.Open();
??????? sqlcom.ExecuteNonQuery();
??????? sqlcon.Close();
??????? GridView1.EditIndex = -1;
??????? bind();
??? }
??? protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
??? {
??????? GridView1.EditIndex = -1;
??????? bind();
??? }
??? public void bind()
??? {
??????? string sqlstr = "select top 5 * from 飞狐工作室";
??????? sqlcon = new SqlConnection(strCon);
??????? SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
??????? DataSet myds = new DataSet();
??????? sqlcon.Open();
??????? myda.Fill(myds, "飞狐工作室");
??????? GridView1.DataSource = myds;
??????? GridView1.DataKeyNames = new string[] { "身份证号码" };
??????? GridView1.DataBind();
??????? sqlcon.Close();
??? }
??? private double sum = 0;//取指定列的数据和
??? protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
??? {
???????
??????? if (e.Row.RowIndex >= 0)
??????? {
??????????? sum += Convert.ToDouble(e.Row.Cells[6].Text);
??????? }
??????? else if (e.Row.RowType == DataControlRowType.Footer)
??????? {
??????????? e.Row.Cells[5].Text = "总薪水为：";
??????????? e.Row.Cells[6].Text = sum.ToString();
??????????? e.Row.Cells[3].Text = "平均薪水为：";
??????????? e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString();
???????????
??????? }
??? }
}
前台：唯一的花头就是设置ShowFooter="True" ，否则默认表头为隐藏的！
<asp:GridView ID="GridView1" runat="server"??? CellPadding="3"? OnRowEditing="GridView1_RowEditing"
??????????????????????? OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound" ShowFooter="True"? >
??????????????????????? <FooterStyle BackColor="White" ForeColor="#000066" />
??????????????????????? <Columns>
??????????????????????????? <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
??????????????????????????? <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
??????????????????????????? <asp:BoundField DataField="姓名" HeaderText="姓名"? />
??????????????????????????? <asp:BoundField DataField="出生日期" HeaderText="邮政编码"? />
??????????????????????????? <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"? />
??????????????????????????? <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
??????????????????????????? <asp:BoundField DataField="起薪" HeaderText="起薪"? />
??????????????????????????
??????????????????????? </Columns>
??????????????????????? <RowStyle ForeColor="#000066" />
??????????????????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????????????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"? CssFont-Bold="True" ForeColor="White" />
??????????????????? </asp:GridView>

?18.GridView数据导入Excel/Excel数据读入GridView

效果图：
GridView 72般高招

解决方案：
页面增加一个按钮，单击事件添加如下方法：
protected void Button1_Click(object sender, EventArgs e)
??? {
??????? Export("application/ms-excel", "学生成绩报表.xls");
??? }

??? private void Export(string FileType, string FileName)
??? {
??????? Response.Charset = "GB2312";
??????? Response.ContentEncoding = System.Text.Encoding.UTF7;
??????? Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
??????? Response.ContentType = FileType;
??????? this.EnableViewState = false;
??????? StringWriter tw = new StringWriter();
??????? HtmlTextWriter hw = new HtmlTextWriter(tw);
??????? GridView1.RenderControl(hw);
??????? Response.Write(tw.ToString());
??????? Response.End();
??? }
//如果没有下面方法会报错类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内
??? public override void VerifyRenderingInServerForm(Control control)
??? {
??? }
还有由于是文件操作所以要引入名称空间IO和Text

??????? }
??? }
???
??? public void bind()
??? {
??????? string sqlstr = "select top 5 * from 飞狐工作室";
??????? sqlcon = new SqlConnection(strCon);
??????? SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);
??????? DataSet myds = new DataSet();
??????? sqlcon.Open();
??????? myda.Fill(myds, "飞狐工作室");
??????? GridView1.DataSource = myds;
??????? GridView1.DataKeyNames = new string[] { "身份证号码" };
??????? GridView1.DataBind();
??????? sqlcon.Close();
??? }

??? protected void Button1_Click(object sender, EventArgs e)
??? {
??????? Export("application/ms-excel", "学生成绩报表.xls");
??? }

??? private void Export(string FileType, string FileName)
??? {
??????? Response.Charset = "GB2312";
??????? Response.ContentEncoding = System.Text.Encoding.UTF7;
??????? Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
??????? Response.ContentType = FileType;
??????? this.EnableViewState = false;
??????? StringWriter tw = new StringWriter();
??????? HtmlTextWriter hw = new HtmlTextWriter(tw);
??????? GridView1.RenderControl(hw);
??????? Response.Write(tw.ToString());
??????? Response.End();
??? }
??? public override void VerifyRenderingInServerForm(Control control)
??? {
??? }
???
}

前台：
<asp:GridView ID="GridView1" runat="server"??? CellPadding="3"?
???????????????????????? BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px"?? >
??????????????????????? <FooterStyle BackColor="White" ForeColor="#000066" />
??????????????????????? <Columns>
??????????????????????????? <asp:BoundField DataField="身份证号码" HeaderText="编号" ReadOnly="True" />
??????????????????????????? <asp:BoundField DataField="姓名" HeaderText="姓名"? />
??????????????????????????? <asp:BoundField DataField="出生日期" HeaderText="邮政编码"? />
??????????????????????????? <asp:BoundField DataField="家庭住址" HeaderText="家庭住址"? />
??????????????????????????? <asp:BoundField DataField="邮政编码" HeaderText="邮政编码" />
??????????????????????????? <asp:BoundField DataField="起薪" HeaderText="起薪"? />
??????????????????????????
??????????????????????? </Columns>
??????????????????????? <RowStyle ForeColor="#000066" />
??????????????????????? <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
??????????????????????? <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left"? CssFont-Bold="True" ForeColor="White" />
??????????????????? </asp:GridView>
??????? <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="导出" />

读取Excel数据的代码：这个很简单的
private DataSet CreateDataSource()
??? {
??????? string strCon;
??????? strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("excel.xls") + "; Extended Properties=Excel 8.0;";
??????? OleDbConnection olecon = new OleDbConnection(strCon);
??????? OleDbDataAdapter myda = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", strCon);
??????? DataSet myds = new DataSet();
??????? myda.Fill(myds);
??????? return myds;
??? }
??? protected void Button1_Click(object sender, EventArgs e)
??? {
??????? GridView1.DataSource = CreateDataSource();
??????? GridView1.DataBind();
??? }

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编程

GridView 72般高招