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DataBoundControl.CreateDataSourceSelectArguments Método

  • Referencia

Definición

Espacio de nombres:
System.Web.UI.WebControls
Ensamblado:
System.Web.dll

Crea un objeto DataSourceSelectArguments predeterminado utilizado por el control enlazado a datos si no se especifica ningún argumento.

protected:
 virtual System::Web::UI::DataSourceSelectArguments ^ CreateDataSourceSelectArguments();
protected virtual System.Web.UI.DataSourceSelectArguments CreateDataSourceSelectArguments ();
abstract member CreateDataSourceSelectArguments : unit -> System.Web.UI.DataSourceSelectArguments
override this.CreateDataSourceSelectArguments : unit -> System.Web.UI.DataSourceSelectArguments
Protected Overridable Function CreateDataSourceSelectArguments () As DataSourceSelectArguments

Devoluciones

DataSourceSelectArguments

Un objeto DataSourceSelectArguments inicializado en Empty.

Ejemplos

En el ejemplo de código siguiente se muestra cómo se puede usar el CreateDataSourceSelectArguments método en una clase derivada para recuperar un objeto predeterminado DataSourceSelectArguments .

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);
}

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

Comentarios

La CreateDataSourceSelectArguments propiedad utiliza el SelectArguments método para inicializar un objeto de argumentos predeterminado y por la DataBoundControl implementación de la clase del PerformSelect método .

Se aplica a

Consulte también