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ParameterCollection.OnValidate Method

Note: This method is new in the .NET Framework version 2.0.

Performs additional custom processes when validating a value.

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

protected override void OnValidate (
	Object o
protected void OnValidate (
	Object o
protected override function OnValidate (
	o : Object



The object being validated.

Exception typeCondition


The object is not an instance of the Parameter class or one of its derived classes.


The object is a null reference (Nothing in Visual Basic).

The OnValidate method determines whether the object specified in the o parameter is a Parameter instance. If not, it throws an ArgumentException exception.

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

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

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