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TemplateControl.OnError Method

Raises the Error event.

Namespace: System.Web.UI
Assembly: System.Web (in system.web.dll)

protected virtual void OnError (
	EventArgs e
)
protected void OnError (
	EventArgs e
)
protected function OnError (
	e : EventArgs
)
Not applicable.

Parameters

e

An EventArgs that contains the event data.

The following code example demonstrates a possible way to use of the OnError method. It creates a string with some arguments that are not valid, which leads to an exception. Because the TemplateControl class is an abstract class, this code example was written using the Page class, which is derived from the TemplateControl class.

<%@ Page language="c#" %>
 <html>
  <head>
  <script language="C#" runat="server">
  void Page_Load(object sender, System.EventArgs e)
  {
  Page.Error += new System.EventHandler(Error_Handler);
  try
  {
  string myString = "Hello";
  // An exception is raised because the length of 'myString' is less than '6'.
  string mySubString = myString.Substring(0,6);
  }
  catch(Exception)
  {
  OnError(EventArgs.Empty);
  }
  }
  void Error_Handler(object sender,System.EventArgs e)
  {
  Response.Write("<br><b>An Error was raised</b>");
  }
  </script>
  </head>
 </html>

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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