title: post to iframe in another page
body: <p>I am having a real struggle trying to accomplish something for work. </p>
  
  <p>I have a starting page with a textbox and a button. I want to be able to post the value entered in the textbox to an iframe, but the iframe is on another another web page called iframeholder.</p>
  
  <p>I am not allowed to session variables or querystring. It has to be post. </p>
  
  <p>I want to send the value of TextBox_Link to the iframe and be able to store it as the value of a ListItem in the RadioButtonList. I greatly appreciate any feedback.</p>
  
  <p>Starting Page</p>
  
  <pre><code>&lt;body&gt;  
  &lt;form id="form1" runat="server"&gt;  
  &lt;div&gt;  
  &lt;table&gt;  
  &lt;tr&gt;  
  &lt;td&gt;&lt;asp:TextBox ID="TextBox_Link" runat="server"&gt;&lt;/asp:TextBox&gt;&lt;/td&gt;  
  &lt;/tr&gt;  
  &lt;tr&gt;  
  &lt;td&gt;&lt;asp:Button ID="Button_Post" runat="server" Text="Button" /&gt;&lt;/td&gt;  
  &lt;/tr&gt;  
  &lt;/table&gt;  
  &lt;/div&gt;  
  &lt;/form&gt;
  </code></pre>
  
  <p>iframeholder page</p>
  
  <pre><code>&lt;body&gt;
  &lt;form id="form1" runat="server"&gt;
  &lt;div&gt;
  &lt;iframe src ="iframe.aspx" name="iframe" width="100%" height="300"&gt;
  &lt;/div
  &lt;/form&gt;
  &lt;/body&gt;
  </code></pre>
  
  <p>iframe</p>
  
  <pre><code>&lt;body&gt;
         &lt;form id="form1" runat="server"&gt;  
         &lt;div&gt;  
             &lt;asp:RadioButtonList ID="RadioButtonList1" runat="server"&gt;  
                 &lt;asp:ListItem&gt;Link1&lt;/asp:ListItem&gt;  
             &lt;/asp:RadioButtonList&gt;  
             &lt;br /&gt;  
             &lt;asp:Button ID="Button1" runat="server" Text="Submit" /&gt;  
         &lt;/div&gt;  
         &lt;/form&gt;  
     &lt;/body&gt;
  </code></pre>