ToolBar.ToolBarButtonCollection.IndexOf(ToolBarButton) Methode

public:
 int IndexOf(System::Windows::Forms::ToolBarButton ^ button);

public int IndexOf (System.Windows.Forms.ToolBarButton button);

member this.IndexOf : System.Windows.Forms.ToolBarButton -> int

Public Function IndexOf (button As ToolBarButton) As Integer

Parameter

Gibt zurück

Der nullbasierte Index des in der Auflistung gefundenen Elements, andernfalls -1.

Beispiele

Im folgenden Codebeispiel werden ein ToolBar - und drei ToolBarButton -Steuerelemente erstellt. Die Symbolleistenschaltflächen werden der Schaltflächensammlung zugewiesen, die Auflistung wird der Symbolleiste zugewiesen, und die Symbolleiste wird dem Formular hinzugefügt. ButtonClick Im -Ereignis der Symbolleiste wird die Button -Eigenschaft des ToolBarButtonClickEventArgs ausgewertet, und das entsprechende Dialogfeld wird geöffnet. Dieser Code erfordert, dass alle Formerstellt wurden , OpenFileDialogein , und SaveFileDialogein PrintDialog .

public:
   void InitializeMyToolBar()
   {
      // Create and initialize the ToolBar and ToolBarButton controls.
      toolBar1 = gcnew ToolBar;
      ToolBarButton^ toolBarButton1 = gcnew ToolBarButton;
      ToolBarButton^ toolBarButton2 = gcnew ToolBarButton;
      ToolBarButton^ toolBarButton3 = gcnew ToolBarButton;
      
      // Set the Text properties of the ToolBarButton controls.
      toolBarButton1->Text = "Open";
      toolBarButton2->Text = "Save";
      toolBarButton3->Text = "Print";
      
      // Add the ToolBarButton controls to the ToolBar.
      toolBar1->Buttons->Add( toolBarButton1 );
      toolBar1->Buttons->Add( toolBarButton2 );
      toolBar1->Buttons->Add( toolBarButton3 );
      
      // Add the event-handler delegate.
      toolBar1->ButtonClick += gcnew ToolBarButtonClickEventHandler(
         this, &Form1::toolBar1_ButtonClick );
      
      // Add the ToolBar to the Form.
      Controls->Add( toolBar1 );
   }

private:
   void toolBar1_ButtonClick(
      Object^ sender,
      ToolBarButtonClickEventArgs^ e )
   {
      // Evaluate the Button property to determine which button was clicked.
      switch ( toolBar1->Buttons->IndexOf( e->Button ) )
      {
         case 0:
            openFileDialog1->ShowDialog();
            // Insert additional code here to open the file.
            break;
         case 1:
            saveFileDialog1->ShowDialog();
            // Insert additional code here to save the file.
            break;
         case 2:
            printDialog1->ShowDialog();
            // Insert additional code here to print the file.    
            break;
      }
   }

public void InitializeMyToolBar()
 {
    // Create and initialize the ToolBar and ToolBarButton controls.
    toolBar1 = new ToolBar();
    ToolBarButton toolBarButton1 = new ToolBarButton();
    ToolBarButton toolBarButton2 = new ToolBarButton();
    ToolBarButton toolBarButton3 = new ToolBarButton();
 
    // Set the Text properties of the ToolBarButton controls.
    toolBarButton1.Text = "Open";
    toolBarButton2.Text = "Save";
    toolBarButton3.Text = "Print";
 
    // Add the ToolBarButton controls to the ToolBar.
    toolBar1.Buttons.Add(toolBarButton1);
    toolBar1.Buttons.Add(toolBarButton2);
    toolBar1.Buttons.Add(toolBarButton3);
    
    // Add the event-handler delegate.
    toolBar1.ButtonClick += new ToolBarButtonClickEventHandler(
       toolBar1_ButtonClick);
    
    // Add the ToolBar to the Form.
    Controls.Add(toolBar1);
 }
 
 private void toolBar1_ButtonClick (
                         Object sender, 
                         ToolBarButtonClickEventArgs e)
 {
   // Evaluate the Button property to determine which button was clicked.
   switch(toolBar1.Buttons.IndexOf(e.Button))
   {
      case 0:
         openFileDialog1.ShowDialog();
         // Insert additional code here to open the file.
         break; 
      case 1:
         saveFileDialog1.ShowDialog();
         // Insert additional code here to save the file.
         break; 
      case 2:
         printDialog1.ShowDialog();
         // Insert additional code here to print the file.    
         break; 
    }
 }

Public Sub InitializeMyToolBar()
    ' Create and initialize the ToolBar and ToolBarButton controls.
    Dim toolBar1 As New ToolBar()
    Dim toolBarButton1 As New ToolBarButton()
    Dim toolBarButton2 As New ToolBarButton()
    Dim toolBarButton3 As New ToolBarButton()
    
    ' Set the Text properties of the ToolBarButton controls.
    toolBarButton1.Text = "Open"
    toolBarButton2.Text = "Save"
    toolBarButton3.Text = "Print"
    
    ' Add the ToolBarButton controls to the ToolBar.
    toolBar1.Buttons.Add(toolBarButton1)
    toolBar1.Buttons.Add(toolBarButton2)
    toolBar1.Buttons.Add(toolBarButton3)
    
    ' Add the event-handler delegate.
    AddHandler toolBar1.ButtonClick, AddressOf toolBar1_ButtonClick
    
    ' Add the ToolBar to the Form.
    Controls.Add(toolBar1)
End Sub    

Private Sub toolBar1_ButtonClick(ByVal sender As Object, _
ByVal e As ToolBarButtonClickEventArgs)

    ' Evaluate the Button property to determine which button was clicked.
    Select Case toolBar1.Buttons.IndexOf(e.Button)
        Case 0
            openFileDialog1.ShowDialog()
            ' Insert additional code here to open the file.
        Case 1
            saveFileDialog1.ShowDialog()
            ' Insert additional code here to save the file.
        Case 2
            printDialog1.ShowDialog()
            ' Insert additional code here to print the file.    
    End Select
End Sub

Hinweise

Diese Methode bietet Ihnen einfachen Zugriff auf den Indexwert von in ToolBarButton der Auflistung. Mit dem Indexwert können Sie leicht bestimmen, welcher ToolBarButton auf den ToolBargeklickt wurde. Das ToolBarButton angeklickte kann durch Auswerten des IndexOf Werts der ToolBarButtonClickEventArgs.Button Eigenschaft bestimmt werden.

Gilt für:

Weitere Informationen

• ToolBarButtonClickEventArgs