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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.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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