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HierarchicalDataBoundControl.ValidateDataSource Method

Verifies that the object a data-bound control binds to is one it can work with.

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

protected override void ValidateDataSource (
	Object dataSource
)
protected void ValidateDataSource (
	Object dataSource
)
protected override function ValidateDataSource (
	dataSource : Object
)
Not applicable.

Parameters

dataSource

An object set to the DataSource property.

Exception typeCondition

InvalidOperationException

dataSource is not a null reference (Nothing in Visual Basic) and implements neither the IHierarchicalEnumerable nor the IHierarchicalDataSource interface.

The ValidateDataSource method is called only in the BaseDataBoundControl class's mutator (setter) for the DataSource property. The HierarchicalDataBoundControl class checks the type of the object that is set for the DataSource property to ensure that it is an instance of the IHierarchicalEnumerable or IHierarchicalDataSource interfaces.

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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