BindingManagerBase.CurrentChanged Evento

Definición

Espacio de nombres:

System.Windows.Forms

Ensamblado:

System.Windows.Forms.dll

Se produce cuando cambia el elemento enlazado actualmente.

public:
 event EventHandler ^ CurrentChanged;

public event EventHandler CurrentChanged;

member this.CurrentChanged : EventHandler 

Public Custom Event CurrentChanged As EventHandler 

Tipo de evento

EventHandler

Ejemplos

En el ejemplo de código siguiente se imprime el valor del Current objeto en un BindingManagerBase en el CurrentChanged evento . En el ejemplo se supone que el origen de datos es un DataTable objeto que contiene un DataColumn denominado CustName.

void Current_Changed( Object^ sender, EventArgs^ /*e*/ )
{
   BindingManagerBase^ bm = dynamic_cast<BindingManagerBase^>(sender);
   
   /* Check the type of the Current object. If it is not a 
           DataRowView, exit the method. */
   if ( bm->Current->GetType() != DataRowView::typeid )
         return;

   // Otherwise, print the value of the column named "CustName".
   DataRowView^ drv = dynamic_cast<DataRowView^>(bm->Current);
   Console::Write( "CurrentChanged): " );
   Console::Write( drv[ "CustName" ] );
   Console::WriteLine();
}

private void Current_Changed(object sender, EventArgs e)
{
    BindingManagerBase bm = (BindingManagerBase) sender;
    /* Check the type of the Current object. If it is not a 
    DataRowView, exit the method. */
    if(bm.Current.GetType() != typeof(DataRowView)) return;

    // Otherwise, print the value of the column named "CustName".
    DataRowView drv = (DataRowView) bm.Current;
    Console.Write("CurrentChanged): ");
    Console.Write(drv["CustName"]);
    Console.WriteLine();
}

Private Sub Current_Changed(sender As Object, e As EventArgs)
    Dim bm As BindingManagerBase = CType(sender, BindingManagerBase)
    ' Check the type of the Current object. If it is not a
    ' DataRowView, exit the method. 
    If bm.Current.GetType() IsNot GetType(DataRowView) Then
        Return
    End If 
    ' Otherwise, print the value of the column named "CustName".
    Dim drv As DataRowView = CType(bm.Current, DataRowView)
    Console.Write("CurrentChanged): ")
    Console.Write(drv("CustName"))
    Console.WriteLine()
End Sub

Comentarios

El CurrentChanged evento se genera cada vez que cambia la Current propiedad o se produce el CurrentItemChanged evento.

Para obtener más información sobre el manejo de eventos, consulte controlar y provocar eventos.

Consulte también

• OnCurrentChanged(EventArgs)
• PositionChanged
• CurrentItemChanged
• Current