Gridview使用（三）Gridview中绑定DropDownList

1、页面代码

                         < asp:TemplateField HeaderText = " 等级 " >
                             < ItemTemplate >
                                 < asp:Label ID = " Label6 "  runat = " server "  Text = ' <%# FormatUserlevel(Eval("User_UserLevel"))%> ' ></ asp:Label >
                             </ ItemTemplate >
                             < EditItemTemplate >
  //这个label的作用是为了在后台控制 当你点击编辑按钮的时 DropDownList 的选中值，                         < asp:Label ID = " Label7 "  runat = " server "  Text = ' <%# Eval("User_UserLevel")%> '  Visible = " false " ></ asp:Label >
                                 < asp:DropDownList ID = " ddl_userLevel "  runat = " server "   >
                                 </ asp:DropDownList >
                             </ EditItemTemplate >
                         </ asp:TemplateField >

将此列设为模版，在现实数据的时候是以label形式，当点击控件自带的编辑按钮的时候就是以DropDownList形势显示

2、后台代码

     protected   void  GridView1_RowDataBound( object  sender, GridViewRowEventArgs e)
     {
        SystemMemberLevel bll = new SystemMemberLevel();
        IList<SystemMemberLevelModel> list = bll.GetAllList();
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            DropDownList ddl = ((DropDownList)e.Row.FindControl("ddl_userLevel"));
            Label lb = ((Label)e.Row.FindControl("Label7"));

            if (ddl != null)
            {
                ddl.DataSource = list;
                ddl.DataTextField = "name";
                ddl.DataValueField = "id";
                ddl.SelectedValue = lb.Text;
                ddl.DataBind();
            }  
        }
    }