PictureBox.SizeMode 屬性

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

指示如何顯示影像。

public:
 property System::Windows::Forms::PictureBoxSizeMode SizeMode { System::Windows::Forms::PictureBoxSizeMode get(); void set(System::Windows::Forms::PictureBoxSizeMode value); };

public System.Windows.Forms.PictureBoxSizeMode SizeMode { get; set; }

member this.SizeMode : System.Windows.Forms.PictureBoxSizeMode with get, set

Public Property SizeMode As PictureBoxSizeMode

屬性值

PictureBoxSizeMode

其中一個 PictureBoxSizeMode 值。 預設值為 Normal。

例外狀況

InvalidEnumArgumentException

所指派的值不是其中一個 PictureBoxSizeMode 值。

範例

下列程式碼範例示範 屬性的使用 SizeMode 。 若要執行此範例，請將下列程式碼貼到 Windows Form 中，並從表單的建構函式或 Load-event 處理方法呼叫 InitializePictureBoxAndButton 方法。

PictureBox PictureBox1 = new PictureBox();
Button Button1 = new Button();

private void InitializePictureBoxAndButton()
{

    this.Controls.Add(PictureBox1);
    this.Controls.Add(Button1);
    Button1.Location = new Point(175, 20);
    Button1.Text = "Stretch";
    Button1.Click += new EventHandler(Button1_Click);

    // Set the size of the PictureBox control.
    this.PictureBox1.Size = new System.Drawing.Size(140, 140);

    //Set the SizeMode to center the image.
    this.PictureBox1.SizeMode = PictureBoxSizeMode.CenterImage;

    // Set the border style to a three-dimensional border.
    this.PictureBox1.BorderStyle = BorderStyle.Fixed3D;

    // Set the image property.
    this.PictureBox1.Image = new Bitmap(typeof(Button), "Button.bmp");
}

private void Button1_Click(System.Object sender, System.EventArgs e)
{
    // Set the SizeMode property to the StretchImage value.  This
    // will enlarge the image as needed to fit into
    // the PictureBox.
    PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
}

Dim PictureBox1 As New PictureBox()
Dim WithEvents Button1 As New Button

<STAThread()> _
Public Shared Sub Main()
    Application.EnableVisualStyles()
    Application.Run(New Form1())
End Sub

Private Sub InitializePictureBoxAndButton()

    Me.Controls.Add(PictureBox1)
    Me.Controls.Add(Button1)
    Button1.Location = New Point(175, 20)
    Button1.Text = "Stretch"

    ' Set the size of the PictureBox control.
    Me.PictureBox1.Size = New System.Drawing.Size(140, 140)

    'Set the SizeMode to center the image.
    Me.PictureBox1.SizeMode = PictureBoxSizeMode.CenterImage

    ' Set the border style to a three-dimensional border.
    Me.PictureBox1.BorderStyle = BorderStyle.Fixed3D

    ' Set the image property.
    Me.PictureBox1.Image = New Bitmap(GetType(Button), "Button.bmp")
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click
    ' Set the SizeMode property to the StretchImage value.  This
    ' will enlarge the image as needed to fit into
    ' the PictureBox.
    PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage
End Sub

備註

此屬性的有效值取自 PictureBoxSizeMode 列舉。

根據預設，在 模式中 Normal ，位於 Image 左上角 PictureBox ，且影像的任何部分太大而無法 PictureBox 裁剪。 StretchImage使用 值會導致影像延展或縮小以符合 PictureBox 。 Zoom使用 值會使影像延展或縮小以符合 PictureBox ;不過，會維護原始中的外觀比例。

AutoSize使用 值會導致控制項調整大小，以一律符合影像大小。 CenterImage使用 值會導致影像置中于工作區中。

另請參閱

• Image
• PictureBoxSizeMode