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BaseDataBoundControl.IsBoundUsingDataSourceID Property

Gets a value indicating whether the DataSourceID property is set.

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

protected bool IsBoundUsingDataSourceID { get; }

Property Value

Type: System.Boolean
The 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 override void PerformSelect() {            

   // Call OnDataBinding here if bound to a data source using the 
   // DataSource property (instead of a DataSourceID), because the 
   // databinding statement is evaluated before the call to GetData.        
    if (! IsBoundUsingDataSourceID) {
        OnDataBinding(EventArgs.Empty);
    }            

    // The GetData method retrieves the DataSourceView object from   
    // the IDataSource associated with the data-bound control.            
    GetData().Select(CreateDataSourceSelectArguments(), 
        OnDataSourceViewSelectCallback);

    // The PerformDataBinding method has completed.
    RequiresDataBinding = false;
    MarkAsDataBound();

    // Raise the DataBound event.
    OnDataBound(EventArgs.Empty);
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0
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