Iron Speed Designer generates ASPX pages based on various configuration settings. ASPX pages should not be edited in Visual Studio .NET because they may be overwritten when Iron Speed Designer rebuilds your application. In fact, you may get an error message if you try to edit the page in Visual Studio .NET.
Instead, we recommend you add any custom ASPX code and make any other modifications in Iron Speed Designer via the Cell Editor in Design Mode.
Working with Microsoft Visual Studio .NET
Opening a Generated Application in Visual Studio .NET
Custom Controls Generated by Iron Speed Designer
Enabling and Disabling Strict Compilation Mode
Compiling Applications in Debug Mode
Editing ASPX Pages in Visual Studio .NET