PictureBoxSizeMode 枚举

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

指定图像在 PictureBox 中的定位方式。

public enum class PictureBoxSizeMode

public enum PictureBoxSizeMode

type PictureBoxSizeMode = 

Public Enum PictureBoxSizeMode

继承

Object

ValueType

Enum

PictureBoxSizeMode

字段

AutoSize	2	调整 PictureBox 大小，使其等于所包含的图像大小。
CenterImage	3	如果 PictureBox 比图像大，则图像将居中显示。 如果图像比 PictureBox 大，则图片将居于 PictureBox 中心，而外边缘将被剪裁掉。
Normal	0	图像被置于 PictureBox 的左上角。 如果图像比包含它的 PictureBox 大，则该图像将被剪裁掉。
StretchImage	1	PictureBox 中的图像被拉伸或收缩，以适合 PictureBox 的大小。
Zoom	4	图像大小按其原有的大小比例被增加或减小。

示例

下面的代码示例演示如何使用 SizeMode 属性。 若要运行此示例，请将以下代码粘贴到 Windows 窗体中，并从窗体的构造函数或 Load-event 处理方法调用 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

注解

使用此枚举的成员可设置 的 属性PictureBox的值SizeMode。