BindingManagerBase.CurrentChanged Событие

Определение

Происходит при изменении элемента, к которому имеется привязка.Occurs when the currently bound item changes.

public:
 event EventHandler ^ CurrentChanged;
public event EventHandler CurrentChanged;
member this.CurrentChanged : EventHandler 
Public Custom Event CurrentChanged As EventHandler 

Тип события

EventHandler

Примеры

Следующий пример кода выводит значение Current объекта в BindingManagerBase в CurrentChanged событии.The following code example prints the value of the Current object in a BindingManagerBase in the CurrentChanged event. В примере предполагается, что источник данных DataTable содержит DataColumn имя CustName .The example assumes the data source is a DataTable containing a DataColumn named 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

Комментарии

CurrentChangedСобытие возникает при каждом Current изменении свойства или при CurrentItemChanged возникновении события.The CurrentChanged event is raised whenever the Current property changes or the CurrentItemChanged event occurs.

Дополнительные сведения об обработке событий см. в разделе обработка и вызов событий.For more information about handling events, see Handling and Raising Events.

Применяется к

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