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)
Parameters
- dataSource
- Type: System.Object
An object set to the DataSource property.
| Exception | Condition |
|---|---|
| InvalidOperationException | dataSource is not null 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 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.
