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StateManagedCollection.OnValidate Method

When overridden in a derived class, validates an element of the StateManagedCollection collection.

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

protected virtual void OnValidate(
	Object value
)

Parameters

value
Type: System.Object

The IStateManager to validate.

ExceptionCondition
ArgumentNullException

value is null.

The OnValidate method is called to validate the object manipulated through the StateManagedCollection implementation of the IList interface methods. The default implementation is to verify that the object manipulated by the collection is not null; however, collections derived from StateManagedCollection override the OnValidate method to perform any additional validation, such as type-checking.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0
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