急求gridview动态生成绑定控件取值问题,重分相送！！
gridview列是动态生成，然后给了两个事件如下：
protected void gvInfo_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
string c;
string[] ac;
for (int i = 3; i < e.Row.Cells.Count; i++)
{
c = e.Row.Cells[i].Text;
ac = c.Split( ', ');
DropDownList ddl = new DropDownList();
ddl.ID = "ddlRow " + e.Row.RowIndex.ToString() + i.ToString();
ddl.DataSource = ac;
ddl.DataBind();
ddl.EnableViewState = true;
e.Row.Cells[i].Controls.Add(ddl);
}
}
}
protected void gvInfo_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
string c;
string[] ac;
for (int i = 3; i < e.Row.Cells.Count; i++)
{
c = e.Row.Cells[i].Text;
ac = c.Split( ', ');
DropDownList ddl = new DropDownList();
ddl.ID = "ddlRow " + e.Row.RowIndex.ToString() + i.ToString();
ddl.DataSource = ac;
ddl.DataBind();
e.Row.Cells[i].Controls.Add(ddl);
}
}
}
现在问题是：点击按钮后，取gridview里的dropdownlist里的值总是取不到，请问哪们大虾遇到过或者解决了这样的问题，请不吝赐教啊，小弟先谢谢啊！！！
[解决办法]
你是怎么取的?
[解决办法]
用findcontrol方法找控件！！！
[解决办法]
有没有报错，还是就是的为空值！！！
[解决办法]
学习哈
顶
[解决办法]
我试过都是可以的.
[解决办法]
以下是我的测试例子,你参考一下: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;namespace Test{ public partial class GridView : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!this.IsPostBack) { this._BindGrid(); } } void _BindGrid() { this.GridView1.DataSource = new string[] { "A ", "b ", "c " }; this.GridView1.DataBind(); } protected void GridView1_DataBound(object sender, EventArgs e) { } protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.DataRow) { DropDownList ddl = new DropDownList(); ddl.ID = "ddl " + e.Row.RowIndex.ToString(); ddl.DataSource = new string[] { "A ", "B ", "C " }; ddl.DataBind(); e.Row.Cells[1].Controls.Add(ddl); } } protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e) { if (e.CommandName == "aa ") { int iRowIndex = Convert.ToInt32(e.CommandArgument); DropDownList ddl = (DropDownList)this.GridView1.Rows[iRowIndex].Cells[1].Controls[0]; Response.Write(ddl.SelectedValue); } } protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.DataRow) { DropDownList ddl = new DropDownList(); ddl.DataSource = new string[] { "A ", "B ", "C " }; ddl.ID = "ddl " + e.Row.RowIndex.ToString(); ddl.DataBind(); e.Row.Cells[1].Controls.Add(ddl); } } }}
[解决办法]
<asp:GridView ID= "GridView1 " runat= "server " OnDataBound= "GridView1_DataBound " OnRowDataBound= "GridView1_RowDataBound " OnRowCommand= "GridView1_RowCommand " OnRowCreated= "GridView1_RowCreated "> <Columns> <asp:ButtonField HeaderText= "点击 " CommandName= "aa " Text= "click "/> </Columns> </asp:GridView>
[解决办法]
因为你的GridView中的DropDownList是在GridView创建行的过程中才创建并添加到Page上面的，这就导致它无法正常加载ViewState，也就是说DropDownList如果没被更改的话它无法从ViewState读取到上一次的值，而如果被更改的话这个值要到Page生命周期中更晚的阶段才会被触发更改事件，于是DropDownList就是没值的。
这个问题你不可能单纯在代码中看出来或者找到解决方案，你必须调整这些代码在Page生命周期中所处的阶段才能解决问题。最简单的做法是不要手动创建DropDownList，直接在GridView的Template上面放置DropDownList。
[解决办法]
DataRowView row = (DataRowView)e.Row.DataItem;这句页面一运行便报错：Unable to cast object of type 'System.Data.Common.DbDataRecord ' to type 'System.Data.DataRowView '. 微软示例中也是这么写得，事件也没错，到了２００５里怎么就这样了，费解！==> 既然不是datarow就用.DbDataRecord就可以了.DataRowView row = (DataRowView)e.Row.DataItem;==> System.Data.Common.DbDataRecord row = (System.Data.Common.DbDataRecord)e.Row.DataItem;
[解决办法]
托拽一个上去不就好了迈？
又是自找麻烦的，非得用”动态“，WebForm 不同于 WinForm ，
不熟悉，基本的 ASP.NET 控件以及页生命周期先看看这里
创建动态数据输入用户界面
http://www.microsoft.com/china/msdn/library/webservices/asp.net/dnasppDynamicUI.mspx?mfr=true
