我想适当加些代码，用以下功能代码写一个web分页控件。希望大虾们帮帮我啊！
这是一个简单的分页代码：
aspx:
<table width= "100% ">
<tr>
<td width= "100% " style= "text-align: right ">
<span style= "font-size: 10pt "> 总共： </span> <asp:Label ID= "lblRecordCount " runat= "server "
ForeColor= "red "> </asp:Label> 条记录 当前： <asp:Label ID= "lblCurrentPage " runat= "server "
ForeColor= "Red "> </asp:Label> / <asp:Label ID= "lblPageCount " runat= "server " ForeColor= "Red "> </asp:Label> 页
转到： <asp:DropDownList ID= "Ddl_PageNumber " runat= "server " AutoPostBack= "true "
CssClass= "lanyu ">
</asp:DropDownList> 页
<asp:LinkButton ID= "BtnFirst " runat= "server " CommandName= "First " Font-Size= "10pt "
OnCommand= "Page_OnClick " Text= "首页 "> 首页 </asp:LinkButton>
<asp:LinkButton ID= "lbnPrevPage " runat= "server " CommandName= "prev " Font-Size= "10pt "
OnCommand= "Page_OnClick " Text= "上一页 "> </asp:LinkButton>
<asp:LinkButton ID= "lbnNextPage " runat= "server " CommandName= "next " Font-Size= "10pt "
OnCommand= "Page_OnClick " Text= "下一页 "> </asp:LinkButton>
<asp:LinkButton ID= "BtnLast " runat= "server " CommandName= "Last " Font-Size= "10pt " OnCommand= "Page_OnClick "
Text= "尾页 "> 尾页 </asp:LinkButton>
</td>
</tr>
</table>
cs:
public partial class data_updGoods : System.Web.UI.Page
{
string constr = (ConfigurationManager.ConnectionStrings[ "jxcConnectionString "]).ToString();
int PageSize, RecordCount, PageCount, CurrentPage, i;
ArrayList Al_PageNum;
public void Page_Load(Object src, EventArgs e)
{
readnum();
}
public void readnum()
{
PageSize = 6; //设定PageSize
SqlConnection MyConn = new SqlConnection(constr);
MyConn.Open();
if (!IsPostBack) //第一次请求执行
{
RecordCount = CalculateRecord(); //计算总共有多少记录/
PageCount = RecordCount / PageSize; //计算总共有多少页
if (RecordCount % PageSize > 0) //取整
{
PageCount = PageCount + 1;
}
lblPageCount.Text = PageCount.ToString();
lblRecordCount.Text = RecordCount.ToString();
ViewState[ "PageCount "] = PageCount;
CurrentPage = 0;
ViewState[ "PageIndex "] = 0;
Al_PageNum = new ArrayList();//绑定DROPDOWNLIST
for (i = 1; i <= PageCount; i++) //从1开始循环，为了不出现0页码
{
Al_PageNum.Add(i.ToString());
}
Ddl_PageNumber.DataSource = Al_PageNum;
Ddl_PageNumber.DataBind();
ListBind(); //绑定
}
MyConn.Close();
}
public int CalculateRecord() //计算总共有多少条记录
{
SqlConnection MyConn = new SqlConnection(constr);
int intCount;
string strCount = "select count(*) as co from Goods ";
SqlCommand MyComm = new SqlCommand(strCount, MyConn);
MyConn.Open();
SqlDataReader dr = MyComm.ExecuteReader();
if (dr.Read())
{
intCount = Int32.Parse(dr[ "co "].ToString());
}
else
{
intCount = 0;
}
dr.Close();
MyConn.Close();
return intCount;
}
public void ListBind()
{
SqlConnection MyConn = new SqlConnection(constr);
int StartIndex; //设定导入的起终地址
StartIndex = CurrentPage * PageSize; //计算记录数的起始点
string strSel = "select * from Goods ";
DataSet ds = new DataSet();
SqlDataAdapter MyAdapter = new SqlDataAdapter(strSel, MyConn);
MyAdapter.Fill(ds, StartIndex, PageSize, "Goods ");
GridView1.DataSource = ds.Tables[ "Goods "].DefaultView;
GridView1.DataBind();
lbnNextPage.Enabled = true;
lbnPrevPage.Enabled = true;
BtnFirst.Enabled = true;
BtnLast.Enabled = true;
if (PageCount == 0)
{
lblCurrentPage.Text = "0 ";
lbnNextPage.Enabled = false;
lbnPrevPage.Enabled = false;
BtnFirst.Enabled = false;
BtnLast.Enabled = false;
}
else
{
if (CurrentPage == (PageCount - 1))
{
lbnNextPage.Enabled = false;
BtnLast.Enabled = false;
}
if (CurrentPage == 0)
{
lbnPrevPage.Enabled = false;
BtnFirst.Enabled = false;
}
lblCurrentPage.Text = (CurrentPage + 1).ToString();
}
Ddl_PageNumber.Text = lblCurrentPage.Text;
}
public void Page_OnClick(Object sender, CommandEventArgs e)//上一页，下一页的单击代码
{
CurrentPage = (int)ViewState[ "PageIndex "];
PageCount = (int)ViewState[ "PageCount "];
string cmd = e.CommandName; //判断cmd，以判定翻页方向
switch (cmd)
{
case "next ":
if (CurrentPage < (PageCount - 1)) CurrentPage++;
break;
case "prev ":
if (CurrentPage > 0) CurrentPage--;
break;
case "Last ":
CurrentPage = (PageCount - 1);
break;
default:
CurrentPage = 0;
break;
}
ViewState[ "PageIndex "] = CurrentPage;
ListBind();
}
public void PageNum_SelectIndexChanged(object sender, System.EventArgs e)
{
ViewState[ "PageIndex "] = int.Parse(Ddl_PageNumber.SelectedItem.Value) - 1;//保持不出现0页码
//PageSize = 3;
CurrentPage = (int)ViewState[ "PageIndex "];
PageCount = (int)ViewState[ "PageCount "];
ListBind();
}
override protected void OnInit(EventArgs e)
{
this.Load += new System.EventHandler(this.Page_Load);
this.Ddl_PageNumber.SelectedIndexChanged += new System.EventHandler(this.PageNum_SelectIndexChanged);
base.OnInit(e);
}
}
我没写过控件，希望借此学习如何自己编写自定义的控件。我会认真研究大侠们给的代码，希望大侠们多多帮助！
[解决办法]
JF
