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PictureBox.SizeMode Property

Indicates how the image is displayed.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public PictureBoxSizeMode SizeMode { get; set; }

Property Value

Type: System.Windows.Forms.PictureBoxSizeMode
One of the PictureBoxSizeMode values. The default is Normal.

ExceptionCondition
InvalidEnumArgumentException

The value assigned is not one of the PictureBoxSizeMode values.

Valid values for this property are taken from the PictureBoxSizeMode enumeration.

By default, in Normal mode, the Image is positioned in the upper-left corner of the PictureBox, and any part of the image that is too big for the PictureBox is clipped. Using the StretchImage value causes the image to stretch or shrink to fit the PictureBox. Using the Zoom value causes the image to be stretched or shrunk to fit the PictureBox; however, the aspect ratio in the original is maintained.

Using the AutoSize value causes the control to resize to always fit the image. Using the CenterImage value causes the image to be centered in the client area.

The following code example demonstrates the use of the SizeMode property. To run this example, paste the following code into a Windows Form and call the InitializePictureBoxAndButton method from the form's constructor or Load-event handling method.

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;
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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