OnPreInit Method
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Page.OnPreInit Method

Raises the PreInit event at the beginning of page initialization.

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

protected virtual void OnPreInit (
	EventArgs e
protected void OnPreInit (
	EventArgs e
protected function OnPreInit (
	e : EventArgs
Not applicable.



An EventArgs that contains the event data.

The OnPreInit method is called at the beginning of the page initialization stage.

After the OnPreInit method is called, personalization information is loaded and the page theme, if any, is initialized. This is also the preferred stage to dynamically define a PageTheme or MasterPage for the Page.

Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.

The OnPreInit method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors: When overriding OnPreInit in a derived class, be sure to call the base class's OnPreInit method so that registered delegates receive the event.

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

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