gridview中的dropdownlist 级联

Question

在gridview中有两个dropdownlist
这种情况下，
如何做级联呢。那个SelectedIndexChanged不知道怎样去弄了

Answer 1

参考：protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
    GridViewRow gvr = (sender as DropDownList).NamingContainer as GridViewRow;
    if(gvr != null)
    {
         DropDownList ddl = gvr.FindControl("DropDownList2") as DropDownList;
         if(ddl != null)
         {
              ddl.DataSource = "你要绑定的数据源";
              ddl.DataTextField = "设置DataTextField";
              ddl.DataValueField = "设置DataValueField";
              ddl.DataBind();
         }
    }
}

Answer 2

protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if (e.Row.FindControl("DropDownList1") != null)
{
DropDownList ddl = ( DropDownList)e.Row.FindControl(" DropDownList1");
ddl.SelectedIndexChanged += new EventHandler(ddl_SelectedIndexChanged);
}
}
}
protected void ddl_SelectedIndexChanged(object sender, EventArgs e)
{
DropDownList Type = sender as DropDownList;
TableCell cell = (TableCell)Type.Parent;
        GridViewRow item = (GridViewRow)cell.Parent;   }

Answer 3

找DropDownList的事件selectIndexChanged，在属性栏可以设置。
帮楼主顶了。