TreeView.OnPreRender Method

Raises the Control.PreRender event.

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

protected internal override void OnPreRender (
	EventArgs e
)
protected void OnPreRender (
	EventArgs e
)
protected internal override function OnPreRender (
	e : EventArgs
)
Not applicable.

Parameters

e

An System.EventArgs that contains event data.

The OnPreRender method is overridden to register for postback. If client script is enabled, it also renders the necessary script and hidden fields.

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

The OnPreRender 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 the OnPreRender method in a derived class, be sure to call the OnPreRender method for the base class 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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