CodeRemoveEventStatement Класс

Определение

public ref class CodeRemoveEventStatement : System::CodeDom::CodeStatement

public class CodeRemoveEventStatement : System.CodeDom.CodeStatement

[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDispatch)]
[System.Runtime.InteropServices.ComVisible(true)]
[System.Serializable]
public class CodeRemoveEventStatement : System.CodeDom.CodeStatement

type CodeRemoveEventStatement = class
    inherit CodeStatement

[<System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDispatch)>]
[<System.Runtime.InteropServices.ComVisible(true)>]
[<System.Serializable>]
type CodeRemoveEventStatement = class
    inherit CodeStatement

Public Class CodeRemoveEventStatement
Inherits CodeStatement

Наследование

Object

CodeObject

CodeStatement

CodeRemoveEventStatement

Атрибуты

ClassInterfaceAttribute ComVisibleAttribute SerializableAttribute

Примеры

В следующем примере показано использование CodeRemoveEventStatement для удаления делегата из события.

// Creates a delegate of type System.EventHandler pointing to a method named OnMouseEnter.
CodeDelegateCreateExpression^ mouseEnterDelegate = gcnew CodeDelegateCreateExpression( gcnew CodeTypeReference( "System.EventHandler" ),gcnew CodeThisReferenceExpression,"OnMouseEnter" );

// Creates a remove event statement that removes the delegate from the TestEvent event.
CodeRemoveEventStatement^ removeEvent1 = gcnew CodeRemoveEventStatement( gcnew CodeThisReferenceExpression,"TestEvent",mouseEnterDelegate );

// A C# code generator produces the following source code for the preceeding example code:
//     this.TestEvent -= new System.EventHandler(this.OnMouseEnter);

// Creates a delegate of type System.EventHandler pointing to a method named OnMouseEnter.
CodeDelegateCreateExpression mouseEnterDelegate = new CodeDelegateCreateExpression( new CodeTypeReference("System.EventHandler"), new CodeThisReferenceExpression(), "OnMouseEnter" );
// Creates a remove event statement that removes the delegate from the TestEvent event.
CodeRemoveEventStatement removeEvent1 = new CodeRemoveEventStatement( new CodeThisReferenceExpression(), "TestEvent", mouseEnterDelegate );

// A C# code generator produces the following source code for the preceeding example code:

//     this.TestEvent -= new System.EventHandler(this.OnMouseEnter);

' Creates a delegate of type System.EventHandler pointing to a method named OnMouseEnter.
Dim mouseEnterDelegate As New CodeDelegateCreateExpression(New CodeTypeReference("System.EventHandler"), New CodeThisReferenceExpression(), "OnMouseEnter")
' Creates a remove event statement that removes the delegate from the TestEvent event.
Dim removeEvent1 As New CodeRemoveEventStatement(New CodeThisReferenceExpression(), "TestEvent", mouseEnterDelegate)

' A Visual Basic code generator produces the following source code for the preceeding example code:

'   RemoveHandler TestEvent, AddressOf Me.OnMouseEnter

Комментарии

CodeRemoveEventStatement может использоваться для представления инструкции, которая удаляет обработчик событий для события.

Свойство Event указывает событие для удаления обработчика событий. Свойство Listener указывает удаляемого обработчика событий.

Конструкторы

Свойства

Методы

Применяется к