Gettting Column Value Using Checkbox in GridView Autopostback = true

January 10, 2006 · 1 min read

Sometimes we need to have checkboxes in the GridView control and we want that as soon as the Checkbox is clicked/checked the postback happens and we get the value from the first row in the GridView control.

This can be easily done by using the following code:

<asp:GridView ID="GridView1" runat="server"  AutoGenerateColumns="False" OnRowCommand="GridView1_RowCommand">                              <asp:BoundField DataField="CategoryID"                 HeaderText="CategoryID" />                 <asp:BoundField DataField="CategoryName"                 HeaderText="CategoryName" />                 asp:TemplateField HeaderText="Select"                                              <asp:CheckBox ID="CheckBox1"                         AutoPostBack="true" runat="server"                         OnCheckedChanged="CheckBox1_CheckedChanged1" />                                                               </asp:TemplateField>                      </asp:GridView>

And the code behind:

 protected void CheckBox1_CheckedChanged1(object sender, EventArgs e)     {         CheckBox checkbox = (CheckBox)sender;         GridViewRow row = (GridViewRow) checkbox.NamingContainer;         Response.Write(row.Cells[0].Text);      }

Ohh by the way when you click a different checkbox it will show you the new value but does not clear the old checkbox. You can make a simple method "ClearCheckboxSelection" which clears all the checkboxes.

Hope you find this example useful:)

This article is part of the GWB Archives. Original Author: Mohammad Azam

New on Geeks with Blogs

  • We Won The One Award I Actually Care About

    Full Scale made the Inc. 5000 for the fifth year straight, the 12th listing across my three companies. Here is why the one award you cannot buy is worth stopping for.

  • Your Customers Build the Features Now

    I let a tool I liked sit dead for a year rather than build the features I wanted. An MCP server meant I never had to, and your customers can do the same to your product.

  • Get the Size of a Directory in Linux the Easy Way

    du -sh for the quick answer, ncdu for the cleanup, df for the disk itself: every command for checking directory size in Linux, plus why du and df never agree.

  • Vim Search and Replace: The Ultimate Guide

    One :%s command replaces every match in a file before a find dialog would even open. The Vim substitute patterns worth the muscle memory: flags, ranges, capture groups, and multi-file edits.