Control.Anchor 属性

public:
 virtual property System::Windows::Forms::AnchorStyles Anchor { System::Windows::Forms::AnchorStyles get(); void set(System::Windows::Forms::AnchorStyles value); };

public virtual System.Windows.Forms.AnchorStyles Anchor { get; set; }

member this.Anchor : System.Windows.Forms.AnchorStyles with get, set

Public Overridable Property Anchor As AnchorStyles

属性值

值的按位组合 AnchorStyles 。 默认值为 Top 和 Left。

示例

下面的代码示例向窗体添加一个 Button 值，并设置其一些常见属性。 该示例将按钮定位到窗体的右下角，以便在调整窗体大小时保持其相对位置。 接下来， BackgroundImage 它将按钮的大小设置为与 相同的大小并重设其大小 Image。 然后，该示例设置该 TabStop 属性 true 并设置该 TabIndex 属性。 最后，它会添加事件处理程序来处理 Click 按钮的事件。 此示例要求你有一个命名imageList1项ImageList。

   // Add a button to a form and set some of its common properties.
private:
   void AddMyButton()
   {
      // Create a button and add it to the form.
      Button^ button1 = gcnew Button;

      // Anchor the button to the bottom right corner of the form
      button1->Anchor = static_cast<AnchorStyles>(AnchorStyles::Bottom | AnchorStyles::Right);

      // Assign a background image.
      button1->BackgroundImage = imageList1->Images[ 0 ];

      // Specify the layout style of the background image. Tile is the default.
      button1->BackgroundImageLayout = ImageLayout::Center;

      // Make the button the same size as the image.
      button1->Size = button1->BackgroundImage->Size;

      // Set the button's TabIndex and TabStop properties.
      button1->TabIndex = 1;
      button1->TabStop = true;

      // Add a delegate to handle the Click event.
      button1->Click += gcnew System::EventHandler( this, &Form1::button1_Click );

      // Add the button to the form.
      this->Controls->Add( button1 );
   }

// Add a button to a form and set some of its common properties.
private void AddMyButton()
{
   // Create a button and add it to the form.
   Button button1 = new Button();

   // Anchor the button to the bottom right corner of the form
   button1.Anchor = (AnchorStyles.Bottom | AnchorStyles.Right);

   // Assign a background image.
   button1.BackgroundImage = imageList1.Images[0];

   // Specify the layout style of the background image. Tile is the default.
   button1.BackgroundImageLayout = ImageLayout.Center;
   
   // Make the button the same size as the image.
   button1.Size = button1.BackgroundImage.Size;

   // Set the button's TabIndex and TabStop properties.
   button1.TabIndex = 1;
   button1.TabStop = true;

   // Add a delegate to handle the Click event.
   button1.Click += new System.EventHandler(this.button1_Click);

   // Add the button to the form.
   this.Controls.Add(button1);
}

' Add a button to a form and set some of its common properties.
Private Sub AddMyButton()
   ' Create a button and add it to the form.
   Dim button1 As New Button()
   
   ' Anchor the button to the bottom right corner of the form
   button1.Anchor = AnchorStyles.Bottom Or AnchorStyles.Right
   
   ' Assign a background image.
   button1.BackgroundImage = imageList1.Images(0)

   ' Specify the layout style of the background image. Tile is the default.
   button1.BackgroundImageLayout = ImageLayout.Center
   
   ' Make the button the same size as the image.
   button1.Size = button1.BackgroundImage.Size
   
   ' Set the button's TabIndex and TabStop properties.
   button1.TabIndex = 1
   button1.TabStop = True

   ' Add a delegate to handle the Click event.
   AddHandler button1.Click, AddressOf Me.button1_Click
   
   ' Add the button to the form.
   Me.Controls.Add(button1)
End Sub

注解

使用该 Anchor 属性定义控件在调整其父控件大小时如何自动调整其大小。 将控件定位到其父控件可确保在调整父控件大小时，定位的边缘与父控件边缘保持相同的位置。

可以将控件定位到其容器的一个或多个边缘。 例如，如果你有一个FormButton属性值Anchor设置为Top和BottomButton，则拉伸以保持与上边缘和下边缘Form的固定距离，因为HeightForm增加。

继承者说明

重写 Anchor 派生类中的属性时，使用基类 Anchor 的属性扩展基实现。 否则，必须提供所有实现。 无需同时替代 get 属性和 set 访问器 Anchor ;仅可根据需要替代一个。

另请参阅

• AnchorStyles
• Dock
• Layout