BaseDataBoundControl.IsBoundUsingDataSourceID Property
Gets a value indicating whether the DataSourceID property is set.
Assembly: System.Web (in System.Web.dll)
Property Value
Type: System.BooleanThe value true is returned if the DataSourceID property is set to value other than String.Empty; otherwise, the value is false.
Controls such as GridView, DetailsView, FormView, and Menu use the IsBoundUsingDataSourceID property to determine whether the data-bound control is bound to an ASP.NET 2.0 data source control, such as an ObjectDataSource or SqlDataSource.
The following code example demonstrates how the IsBoundUsingDataSourceID property is used by a derived data-bound control class. The IsBoundUsingDataSourceID property is used in the PerformSelect method implementation to determine whether the DataBinding event should be raised. This code example is part of a larger example provided for the DataBoundControl class.
Protected Overrides Sub PerformSelect() ' Call OnDataBinding here if bound to a data source using the ' DataSource property (instead of a DataSourceID) because the ' data-binding statement is evaluated before the call to GetData. If Not IsBoundUsingDataSourceID Then OnDataBinding(EventArgs.Empty) End If ' The GetData method retrieves the DataSourceView object from the ' IDataSource associated with the data-bound control. GetData().Select(CreateDataSourceSelectArguments(), _ AddressOf OnDataSourceViewSelectCallback) ' The PerformDataBinding method has completed. RequiresDataBinding = False MarkAsDataBound() ' Raise the DataBound event. OnDataBound(EventArgs.Empty) End Sub 'PerformSelect
Available since 2.0