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copied!<p>You can't post back the data that way in a div tag <em>if you are setting the value of the div on the client side</em>. You'll need to use a form element, like a hidden textbox if you want to use a straight ASP.NET postback.</p> <p>Here's a simple example. It uses a javascript event to set the text of a HiddenField when the button is pressed and then displays the text on postback.</p> <pre><code><%@ Page Language="C#" AutoEventWireup="true" %> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <script type="text/javascript"> function copyToHiddenField() { var hidden = document.getElementById("<%= txtHidden.ClientID %>"); var theDivText = document.getElementById("thedata").innerHTML; hidden.value = theDivText; return true; } </script> </head> <body> <form id="form1" runat="server"> <div id="thedata">Here's the data!</div> <asp:HiddenField ID="txtHidden" runat="server" /> <asp:Button ID="btnSumbit" Text="Submit" OnClick="btnSumbit_OnClick" runat="server" /> <asp:Literal ID="litText" runat="server" /> </form> </body> </html> <script runat="server"> protected void Page_Load(object sender, EventArgs e) { btnSumbit.Attributes.Add("onclick", "return copyToHiddenField();"); } public void btnSumbit_OnClick(object sender, EventArgs e) { litText.Text = txtHidden.Value; } </script> </code></pre> <p><strong>EDIT</strong><br /> As stated in the answers/comments, you can use the <code>InnerText</code> property of a <code>div</code> tag when <code>runat="server"</code> is specified, but you will only be able read out the <code>InnerText</code> that is set when the page is rendered. Client side updates to the <code>InnerText</code> of the div will not be sent to the server on postback.</p>

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