绑定datagrid控件中的DropdownList控件...找不到.大侠们.

[daodao456]

在GRIDVIEW 的模板列里放了两个DropDownLIST一个在ITEM。和EDIT
就是怎么都找不到。。。下面的方法不对吗？
ONE:foreach (GridViewRow myrow in GridView1.Rows)
{
DropDownList ddl = (DropDownList)myrow.FindControl("DropDownList1");
ddl.DataSource = ds;
ddl.DataValueField = "KaoqinTypeID";
ddl.DataTextField = "KaoqinTypeName";
ddl.DataBind();
}
TWO: protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
DropDownList ddl = (DropDownList)e.Row.FindControl("DropDownList1");

}
THREE: protected void Page_Load(object sender, EventArgs e)
{
DropDownList ddl = (DropDownList) GridView1.Rows[0].Cells[0].FindControl("DropDownList1");
}

[silentwins]

用No.2
Edit的时候要找到的话，必须在EditTemplate里面有那个空间~

[daodao456]

一直在 ddl.DataSource = ds; 这里提示"未将对象引用设置到对象的实例。"

[silentwins]

ddl.DataSource = ds.Tables[0].DefaultView;

[silentwins]

或者检查ds里面是否有值

[exy337]

[Quote=引用 3 楼 silentwins 的回复:]
C# codeddl.DataSource = ds.Tables[0].DefaultView;
[/Quote]

[amandag]

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        //这里找TemplateField里的控件
        DropDownList ddl = (DropDownList)e.Row.FindControl("DropDownList1");

        if ((e.Row.RowState & DataControlRowState.Edit) != 0)
        {
            //这里找EditTemplateField里的控件
        }
    }
} 

[daodao456]

感谢!..
非常的感谢!...
多谢各位大侠.再次感谢.这东西我从1点搞到3点.再上CSDN弄到5点才OK...浪费时间浪费得想哭...
再次感谢...没有你们...可能就....