Is there an 'Include' statement for ASP.NET C#

Is there an 'Include' statement for ASP.NET C# for including common bits of code. I would use this where code is common but it needs to be part of a page to work, such as session variables and Page.Controls, such as my routines for displaying exception information.i.e: private void MessageBox(string strMsg) { Page.Controls.Add(new LiteralControl("
window.alert('" + strMsg + "')
")); } Stapes
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