C# - Unable To Get Master & Details Gridview To Work?

Mar 6, 2010

I'm unable to get this to work. I'm very new at programming and would appreciate any help on this.

<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void Page_Load(object sender, EventArgs e)

[Code]....

error message:

Cannot perform '=' operation on System.Int32 and System.String. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.EvaluateException: Cannot perform '=' operation on System.Int32 and System.String.

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