Question

I have this table with which I create dynamic checkboxes (the number of records may/will vary) the idea is that I can select a checkbox on whatever table row and “Send” those records.

I want to send an array of ID’s off to a different page for processing – but i’m very stuck!

Here is my table/form code

<form action="processingpage.aspx" method="post">
  <asp:Repeater ID="GroupList" runat="server">
    <HeaderTemplate>
       <table id="grouptable" class="table"> 
         <thead>
            <tr>
              <th>Broadcast</th>
              <th>ID</th>
              <th>Name</th>
              <th>Last Modified</th>
              <th>Actions</th>
            </tr>
        </thead>
      <tbody>
    </HeaderTemplate>
    <ItemTemplate>
        <tr>
          <td>
            <input type="checkbox" name="BroadcastSelect[]" value="<%# Eval("Group_ID") %>"</input></td>
          <td><%# Eval("Group_ID") %></td>
          <td><%# Eval("DESC") %></td>
          <td><label id="test">hello</label></td>
          <td><a class="btn btn-info" href="<%# Eval("gURL") %>">Edit</a>/td>
        </tr>
    </ItemTemplate>
    <FooterTemplate>
         </tbody>
       </table>
    </FooterTemplate>
  </asp:Repeater>
  <input class="btn primary" type="submit" value="Broadcast"/>
</form>

I think this is sending the array ok as I managed to see this via Request.in

BroadcastSelect[]TESTGROUP (which is one of the items I sent)

but on my receiving page I’m getting nothing but blank text I’ve tried

Label1.Text = Page.Request.Form["BroadcastSelect[0]"];

and

Label1.Text = Page.Request.QueryString["BroadcastSelect[0]"];

but no values are printed. Can anyone point me in the right direction?

Answer 1

I think the problem is that it is not possible to index the <input name="BroadcastSelect[]"> through Request.Form or Request.QueryString.

If you breakpoint in the code, you will see that the Request.Form object will have Request.Form["BroadcastSelect[]"] as one of the available items, which will return a CSV list of values.

So try using this instead…

string broadcastSelect = Request.Form["BroadcastSelect[]"];
if (broadcastSelect != null)
{
   string[] broadcastSelectParts = broadcastSelect.Split(',');
   Label1.Text = broadcastSelectParts[0];
}

Obviously the code in the block can also be brought down to a single line, but if you want something other than the 1st item, check that you’re not selected an “out of bound” index…

Label1.Text = broadcastSelect.Split(',')[0];