ASP.NET Discussion - Checkbox problem

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Checkbox problem

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Category: General Discussion
Forum Name: ASP.NET Discussion
Forum Description: Discussion and chat on ASP.NET related topics.
URL: https://forums.webwiz.net/forum_posts.asp?TID=9537
Printed Date: 28 March 2026 at 9:01am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com

Topic: Checkbox problem

Posted By: sabrin514
Subject: Checkbox problem
Date Posted: 04 February 2004 at 12:10pm

I have a datagrid with an HTML checkbox in a template column. I am having problems extracting the values of the checked items. I have tried using javascript, but I keep getting errors informing me that this checkbox is null or not an object.

Can anyone help? Thanks.

Here is a snippet of code.

-------------------------------------

   <asp:datagrid id="dgExistingList" runat="server" DataKeyField="PROJECT_NUMBER" AllowSorting="True" AutoGenerateColumns="False" Width="730px">
              <AlternatingItemStyle Font-Size="12px" Font-Names="Arial" BackColor="#E2F6F1"></AlternatingItemStyle>
              <ItemStyle Font-Size="12px" Font-Names="Arial"></ItemStyle>
              <HeaderStyle Font-Size="12px" Font-Names="Arial" Font-Bold="True" BackColor="#DDDDDD"></HeaderStyle>
              <Columns>
               <asp:TemplateColumn Visible="False">
                 <HeaderStyle Width="10px"></HeaderStyle>
                <HeaderTemplate>
                  
                </HeaderTemplate>
                <ItemTemplate>
                 <INPUT type="checkbox" id="chkProjectNumbers" runat="server" name="chkProjectNumbers" value='<%# DataBinder.Eval(Container, "DataItem.PROJECT_NUMBER") %>'>
                 </asp:HyperLink>
                </ItemTemplate>

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