Question

i created a web application wherein i used the onrowcommand and created the handler in code behind, now i have a button inside the emptytemplate, whenever i click the button, my onRowCommand is not executed. Below is my code.

<asp:GridView ID="grdExternalLinkSection1" runat="server" Width="100%" AutoGenerateColumns="false" CellPadding="5" OnRowCommand="grdExternalLinkSection_RowCommand">
                                <EmptyDataTemplate>
                                    External Link Title
                                    <asp:TextBox ID="txtExternalLinkTitleEmptySection1" runat="server"></asp:TextBox>
                                    External Link Url
                                    <asp:TextBox ID="txtExternalLinkUrlEmptySection1" runat="server"></asp:TextBox>
                                    <asp:Button ID="btnExternalLinkEmptySection1" runat="server" Text="Add" CommandArgument="1" CommandName="headernew" style="padding:3px; width:56px;" />
                                </EmptyDataTemplate>
</asp:GridView>

there are more fields but this is what i am talking about. and here is my code behind handler for the RowCommand Event.

protected void grdExternalLinkSection_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        Response.Write("welcome");
    }

it never excutes the handler, and below is my page directive:

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="NewsletterASPVersion.ascx.cs" Inherits="RWO_Controls_NewsletterASPVersion" %>

this worked once, and after thereafter never working. does anyone have any idea what could be causing this.

Answer 1

There are two possible traps that you might have fallen into:

1. You are rebinding the GridView to it’s DataSource on every postback.
   So always check:

   if(!IsPostBack)BindGrid();
   

2. You are not calling grdExternalLinkSection1.DataBind() when the DataSource is empty

But then you would not see the EmptyDataTemplate at all. So i guess that you’ve fallen into the first trap.