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);
}

.NET Framework

Supported in: 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.

Was this page helpful?
(1500 characters remaining)
Thank you for your feedback
Show:
© 2014 Microsoft