Control.BindingContextChanged 事件


BindingContext 属性的值更改时发生。Occurs when the value of the BindingContext property changes.

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


下面的代码示例将 EventHandler 委托添加到 TextBox 控件的 BindingContextChanged 事件。The following code example adds an EventHandler delegate to the BindingContextChanged event of a TextBox control.

   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


若要通过 BindingContext 属性向 Control 中添加新的 BindingContext,请参阅 BindingContext 构造函数。To add a new BindingContext to the Control through the BindingContext property, see the BindingContext constructor.

如果更改了 BindingContext 属性,则会引发此事件,这是通过编程修改或用户交互发生更改的。This event is raised if the BindingContext property is changed is changed by either a programmatic modification or user interaction.

有关处理事件的详细信息,请参阅处理和引发事件For more information about handling events, see Handling and Raising Events.