ToolBarButton.ImageIndex 属性

public:
 property int ImageIndex { int get(); void set(int value); };

[System.ComponentModel.TypeConverter(typeof(System.Windows.Forms.ImageIndexConverter))]
public int ImageIndex { get; set; }

[<System.ComponentModel.TypeConverter(typeof(System.Windows.Forms.ImageIndexConverter))>]
member this.ImageIndex : int with get, set

Public Property ImageIndex As Integer

属性值

分配给工具栏按钮的 Image 索引值。 默认值为 -1。

属性

TypeConverterAttribute

例外

示例

下面的代码示例创建一个和三ToolBarButton个ToolBar控件，将按钮分配给工具栏，并设置一些按钮的常见属性。 此代码要求已创建 ImageList 、MenuItemImageListToolTip创建和分配了至少一个FormImage代码。

public:
   void InitializeMyToolBar()
   {
      // Create the ToolBar, ToolBarButton controls, and menus.
      ToolBarButton^ toolBarButton1 = gcnew ToolBarButton( "Open" );
      ToolBarButton^ toolBarButton2 = gcnew ToolBarButton;
      ToolBarButton^ toolBarButton3 = gcnew ToolBarButton;
      ToolBar^ toolBar1 = gcnew ToolBar;
      MenuItem^ menuItem1 = gcnew MenuItem( "Print" );
      array<MenuItem^>^ temp1 = {menuItem1};
      System::Windows::Forms::ContextMenu^ contextMenu1 =
         gcnew System::Windows::Forms::ContextMenu( temp1 );
      
      // Add the ToolBarButton controls to the ToolBar.
      toolBar1->Buttons->Add( toolBarButton1 );
      toolBar1->Buttons->Add( toolBarButton2 );
      toolBar1->Buttons->Add( toolBarButton3 );
      
      // Assign an ImageList to the ToolBar and show ToolTips.
      toolBar1->ImageList = imageList1;
      toolBar1->ShowToolTips = true;
      
      /* Assign ImageIndex, ContextMenu, Text, ToolTip, and 
         Style properties of the ToolBarButton controls. */
      toolBarButton2->Style = ToolBarButtonStyle::Separator;
      toolBarButton3->Text = "Print";
      toolBarButton3->Style = ToolBarButtonStyle::DropDownButton;
      toolBarButton3->ToolTipText = "Print";
      toolBarButton3->ImageIndex = 0;
      toolBarButton3->DropDownMenu = contextMenu1;
      
      // Add the ToolBar to a form.
      Controls->Add( toolBar1 );
   }

public void InitializeMyToolBar()
 {
    // Create the ToolBar, ToolBarButton controls, and menus.
    ToolBarButton toolBarButton1 = new ToolBarButton("Open");
    ToolBarButton toolBarButton2 = new ToolBarButton();
    ToolBarButton toolBarButton3 = new ToolBarButton();
    ToolBar toolBar1 = new ToolBar();
    MenuItem menuItem1 = new MenuItem("Print");
    ContextMenu contextMenu1 = new ContextMenu(new MenuItem[]{menuItem1});

    // Add the ToolBarButton controls to the ToolBar.
    toolBar1.Buttons.Add(toolBarButton1);
    toolBar1.Buttons.Add(toolBarButton2);
    toolBar1.Buttons.Add(toolBarButton3);
 
    // Assign an ImageList to the ToolBar and show ToolTips.
    toolBar1.ImageList = imageList1;
    toolBar1.ShowToolTips = true;
 
    /* Assign ImageIndex, ContextMenu, Text, ToolTip, and 
       Style properties of the ToolBarButton controls. */
    toolBarButton2.Style = ToolBarButtonStyle.Separator;
    toolBarButton3.Text = "Print";
    toolBarButton3.Style = ToolBarButtonStyle.DropDownButton;
    toolBarButton3.ToolTipText = "Print";
    toolBarButton3.ImageIndex = 0;
    toolBarButton3.DropDownMenu = contextMenu1;
 
    // Add the ToolBar to a form.
    Controls.Add(toolBar1);
 }

Public Sub InitializeMyToolBar()
    ' Create the ToolBar, ToolBarButton controls, and menus.
    Dim toolBarButton1 As New ToolBarButton("Open")
    Dim toolBarButton2 As New ToolBarButton()
    Dim toolBarButton3 As New ToolBarButton()
    Dim toolBar1 As New ToolBar()
Dim menuItem1 As New MenuItem("Print")
Dim contextMenu1 As New ContextMenu(New MenuItem(){menuItem1})
    
    ' Add the ToolBarButton controls to the ToolBar.
    toolBar1.Buttons.Add(toolBarButton1)
    toolBar1.Buttons.Add(toolBarButton2)
    toolBar1.Buttons.Add(toolBarButton3)
    
    ' Assign an ImageList to the ToolBar and show ToolTips.
    toolBar1.ImageList = imageList1
    toolBar1.ShowToolTips = True
    
    ' Assign ImageIndex, ContextMenu, Text, ToolTip, and
    ' Style properties of the ToolBarButton controls. 
    toolBarButton2.Style = ToolBarButtonStyle.Separator
    toolBarButton3.Text = "Print"
    toolBarButton3.Style = ToolBarButtonStyle.DropDownButton
    toolBarButton3.ToolTipText = "Print"
    toolBarButton3.ImageIndex = 0
    toolBarButton3.DropDownMenu = contextMenu1
    
    ' Add the ToolBar to a form.
    Controls.Add(toolBar1)
End Sub

注解

该值ImageIndex引用分配给父ToolBar控件的图像ImageList的索引值。

ImageKey 并且 ImageIndex 是互斥的，这意味着如果设置了一个，另一个则设置为无效值并忽略。 如果设置该 ImageKey 属性，则 ImageIndex 属性将自动设置为 -1。 或者，如果设置属性 ImageIndex ，则 ImageKey 会自动设置为空字符串（“）。

另请参阅

• ToolBar
• ImageList