Menu.MenuItemCollection.RemoveAt(Int32) Methode

Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll
Quelle:
Menu.MenuItemCollection.cs
Quelle:
Menu.MenuItemCollection.cs

Entfernt eine MenuItem aus der Menüelementauflistung bei einem angegebenen Index.

public:
 virtual void RemoveAt(int index);
public virtual void RemoveAt(int index);
abstract member RemoveAt : int -> unit
override this.RemoveAt : int -> unit
Public Overridable Sub RemoveAt (index As Integer)

Parameter

index
Int32

Der Index des MenuItem zu entfernenden Inhalts.

Implementiert

RemoveAt(Int32)

Beispiele

Das folgende Codebeispiel zeigt, wie Sie ein Hauptmenü mit myMainMenuzwei MenuItem Objekten FileEditund . Das File Menü enthält drei Untermenüelemente: New, , Openund Exit. Mithilfe der RemoveAt Methode entfernen Sie das Exit Element aus der Menüauflistung mithilfe der File Indexnummer. Dieses Beispiel erfordert, dass Sie bereits einen Form benannten Namen Form1erstellt haben.

void InitializeMyMenu()
{
   // Create the MainMenu object.
   MainMenu^ myMainMenu = gcnew MainMenu;

   // Create the MenuItem objects.
   MenuItem^ fileMenu = gcnew MenuItem( "&File" );
   MenuItem^ editMenu = gcnew MenuItem( "&Edit" );
   MenuItem^ newFile = gcnew MenuItem( "&New" );
   MenuItem^ openFile = gcnew MenuItem( "&Open" );
   MenuItem^ exitProgram = gcnew MenuItem( "E&xit" );

   // Add the MenuItem objects to myMainMenu.
   myMainMenu->MenuItems->Add( fileMenu );
   myMainMenu->MenuItems->Add( editMenu );

   // Add three submenus to the File menu.
   fileMenu->MenuItems->Add( newFile );
   fileMenu->MenuItems->Add( openFile );
   fileMenu->MenuItems->Add( exitProgram );

   // Assign myMainMenu to the form.
   Menu = myMainMenu;

   // Remove the item S"Exit" from the File menu.
   fileMenu->MenuItems->RemoveAt( 2 );
}

public void InitializeMyMenu()
{
    // Create the MainMenu object.
    MainMenu myMainMenu = new MainMenu();
    
    // Create the MenuItem objects.
    MenuItem fileMenu = new MenuItem("&File");
    MenuItem editMenu = new MenuItem("&Edit");
    MenuItem newFile = new MenuItem("&New");
    MenuItem openFile = new MenuItem("&Open");
    MenuItem exitProgram = new MenuItem("E&xit");
    
    // Add the MenuItem objects to myMainMenu.
    myMainMenu.MenuItems.Add(fileMenu);
    myMainMenu.MenuItems.Add(editMenu);
    
    // Add three submenus to the File menu.
    fileMenu.MenuItems.Add(newFile);
    fileMenu.MenuItems.Add(openFile);
    fileMenu.MenuItems.Add(exitProgram);
    
    // Assign myMainMenu to the form.
    Menu = myMainMenu;
    
    // Remove the item "Exit" from the File menu. 
    fileMenu.MenuItems.RemoveAt(2);
}

Public Sub InitializeMyMenu()
   ' Create the MainMenu object.
   Dim myMainMenu As New MainMenu()
   
   ' Create the MenuItem objects.
   Dim fileMenu As New MenuItem("&File")
   Dim editMenu As New MenuItem("&Edit")
   Dim newFile As New MenuItem("&New")
   Dim openFile As New MenuItem("&Open")
   Dim exitProgram As New MenuItem("E&xit")
   
   ' Add the MenuItem objects to myMainMenu.
   myMainMenu.MenuItems.Add(fileMenu)
   myMainMenu.MenuItems.Add(editMenu)
   
   ' Add three submenus to the File menu.
   fileMenu.MenuItems.Add(newFile)
   fileMenu.MenuItems.Add(openFile)
   fileMenu.MenuItems.Add(exitProgram)
   
   ' Assign myMainMenu to the form.
   Menu = myMainMenu
   
   ' Remove the item "Exit" from the File menu. 
   fileMenu.MenuItems.RemoveAt(2)
End Sub

Hinweise

Wenn ein Element MenuItem aus der Menüelementauflistung entfernt wird, werden alle nachfolgenden Menüelemente an einer Position in der Auflistung nach oben verschoben.

Gilt für: