Control.BackgroundImage 屬性
重要
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取得或設定在控制項中顯示的背景影像。
public:
virtual property System::Drawing::Image ^ BackgroundImage { System::Drawing::Image ^ get(); void set(System::Drawing::Image ^ value); };C#
public virtual System.Drawing.Image BackgroundImage { get; set; }C#
public virtual System.Drawing.Image? BackgroundImage { get; set; }member this.BackgroundImage : System.Drawing.Image with get, setPublic Overridable Property BackgroundImage As Image表示要在控制項背景中顯示之影像的 Image。
下列程式碼範例會將 新增 Button 至表單，並設定其一些通用屬性。 此範例會將按鈕錨定在表單右下角，讓它在表單調整大小時保留其相對位置。 接下來，它會將 和 按鈕的大小設定 BackgroundImage 為與 Image 相同的大小。 此範例接著會將 TabStop 設定為 true ，並設定 TabIndex 屬性。 最後，它會新增事件處理常式來處理 Click 按鈕的事件。 此範例需要您有 ImageList 名為 imageList1 的 。
// 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 );
}
C#
// 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
- BackgroundImage使用 屬性將圖形影像放在 控制項上。
在衍生類別中覆 BackgroundImage 寫 屬性時，請使用基類的 BackgroundImage 屬性來擴充基底實作。 否則，您必須提供所有實作。 您不需要同時覆寫 get 屬性的 BackgroundImage 和 set 存取子;您可以視需要只覆寫一個。
| 產品 | 版本 |
|---|---|
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9, 10 |
