BindingManagerBase.CurrentChanged Evento

Definição

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Ocorre quando o item associado no momento é alterado.

public:
 event EventHandler ^ CurrentChanged;

public event EventHandler CurrentChanged;

member this.CurrentChanged : EventHandler 

Public Custom Event CurrentChanged As EventHandler 

Tipo de evento

EventHandler

Exemplos

O exemplo de código a seguir imprime o valor do Current objeto em um BindingManagerBase no CurrentChanged evento. O exemplo pressupõe que a fonte de dados seja uma DataTable que contém um DataColumn chamado 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

Comentários

O CurrentChanged evento é gerado sempre que a Current propriedade é alterada ou o CurrentItemChanged evento ocorre.

Para obter mais informações sobre como lidar com eventos, consulte Manipulando e levantando eventos.

Confira também

• OnCurrentChanged(EventArgs)
• PositionChanged
• CurrentItemChanged
• Current