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ParameterCollection.OnValidate Method

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


Type: System.Object

The object being validated.


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


The object is null.

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

.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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