GridView OnSelectedIndexChanged event not firing

Question

I am trying to get the selected row of the GridView, and I know that I should be able to get that information based on the OnSelectedIndexChanged event. Whenever I click on the row, the event does not fire.

<asp:GridView ID="GridView1" runat="server" GridLines="None"
  Width="930px" CellPadding="4" ForeColor="#333333" 
  onselectedindexchanged="GridView1_SelectedIndexChanged2">
  <AlternatingRowStyle BackColor="White" />
  <EditRowStyle BackColor="#2461BF" />
  <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
  <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
  <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
  <RowStyle BackColor="#EFF3FB" />
  <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
  <SortedAscendingCellStyle BackColor="#F5F7FB" />
  <SortedAscendingHeaderStyle BackColor="#6D95E1" />
  <SortedDescendingCellStyle BackColor="#E9EBEF" />
  <SortedDescendingHeaderStyle BackColor="#4870BE" />
</asp:GridView>

protected void GridView1_SelectedIndexChanged2(object sender, EventArgs e)
{
    //string company = GridView1.SelectedRow.Cells[0].Text;
    Response.Redirect("Client_View.aspx", false);

}

Any help with this would be appreciated. There is no code that I can see that resets its reference to another event, that I can see.

Answer 1

If you are just clicking on the row in the GridView, that will not fire the event. You have to have some kind of button in the row to click on, which will fire the RowCommand event, as well as the SelectedIndexChanged event (if the row you click is not already selected, of course). It's not exactly like the Windows Forms DataGridView =)

The easiest way to get the event to fire, is to add this attribute to your GridView markup:

AutoGenerateSelectButton="True"

This creates a "Select" LinkButton, which will fire the Gridview1_SelectedIndexChanged2 event in your code-behind when you click it.

EDIT: Just to clarify, this is where you need to add that attribute:

<asp:GridView ID="GridView1" runat="server" GridLines="None" 
  Width="930px" CellPadding="4" ForeColor="#333333"  
  onselectedindexchanged="GridView1_SelectedIndexChanged2"
  AutoGenerateSelectButton="True" >

Answer 2

If you have postback code in selected index changing method you should false EnableEventValidation

  <%@ Page Title="" Language="C#" EnableEventValidation="false" MasterPageFile="~/Administration/Site.master" AutoEventWireup="true" CodeFile="CourseStatusReport.aspx.cs" Inherits="Administration_Reports_CourseStatusReport" %>