DataBoundControl.CreateDataSourceSelectArguments Method

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);
}