Control.BindingContextChanged 事件
定義
發生於 BindingContext 屬性的值變更時。Occurs when the value of the BindingContext property changes.
public:
event EventHandler ^ BindingContextChanged;
public event EventHandler BindingContextChanged;
member this.BindingContextChanged : EventHandler
Public Custom Event BindingContextChanged As EventHandler
事件類型
範例
下列程式碼範例會將 EventHandler 委派加入至 BindingContextChanged 控制項的事件 TextBox 。The following code example adds an EventHandler delegate to the BindingContextChanged event of a TextBox control.
private:
void AddEventHandler()
{
textBox1->BindingContextChanged += gcnew EventHandler(
this, &Form1::BindingContext_Changed );
}
void BindingContext_Changed( Object^ /*sender*/, EventArgs^ /*e*/ )
{
Console::WriteLine( "BindingContext changed" );
}
private void AddEventHandler()
{
textBox1.BindingContextChanged += new EventHandler(BindingContext_Changed);
}
private void BindingContext_Changed(object sender, EventArgs e)
{
Console.WriteLine("BindingContext changed");
}
Private Sub AddEventHandler()
AddHandler textBox1.BindingContextChanged, _
AddressOf BindingContext_Changed
End Sub
Private Sub BindingContext_Changed(sender As Object, e As EventArgs)
Console.WriteLine("BindingContext changed")
End Sub
備註
若要 BindingContext 透過屬性加入新的 Control BindingContext ,請參閱 BindingContext 函式。To add a new BindingContext to the Control through the BindingContext property, see the BindingContext constructor.
如果 BindingContext 屬性變更是透過程式設計的修改或使用者互動來變更,就會引發此事件。This event is raised if the BindingContext property is changed is changed by either a programmatic modification or user interaction.
如需處理事件的詳細資訊,請參閱 處理和引發事件。For more information about handling events, see Handling and Raising Events.