Graphics.DrawImage Method (Image, Rectangle, Rectangle, GraphicsUnit)
Draws the specified portion of the specified Image at the specified location and with the specified size.
Assembly: System.Drawing (in System.Drawing.dll)
'Declaration Public Sub DrawImage ( _ image As Image, _ destRect As Rectangle, _ srcRect As Rectangle, _ srcUnit As GraphicsUnit _ )
Parameters
- image
- Type: System.Drawing.Image
Image to draw.
- destRect
- Type: System.Drawing.Rectangle
Rectangle structure that specifies the location and size of the drawn image. The image is scaled to fit the rectangle.
- srcRect
- Type: System.Drawing.Rectangle
Rectangle structure that specifies the portion of the image object to draw.
- srcUnit
- Type: System.Drawing.GraphicsUnit
Member of the GraphicsUnit enumeration that specifies the units of measure used by the srcRect parameter.
| Exception | Condition |
|---|---|
| ArgumentNullException | image is Nothing. |
The following code example is designed for use with Windows Forms, and it requires PaintEventArgs e, which is a parameter of the Paint event handler. The code performs the following actions:
Creates an image from a JPEG file SampImag.jpg in the folder of the example.
Creates a destination rectangle in which to draw the image.
Creates a source rectangle from which to extract a portion of the image.
Sets the unit of measure of the source rectangle to pixels.
Draws the image to the screen.
The position of the destination rectangle locates the image on the screen, the sizes of the source and destination rectangles determine the scaling of the drawn image, and the size of the source rectangle determines what portion of the original image is drawn to the screen.
Private Sub DrawImageRectRect(ByVal e As PaintEventArgs) ' Create image. Dim newImage As Image = Image.FromFile("SampImag.jpg") ' Create rectangle for displaying image. Dim destRect As New Rectangle(100, 100, 450, 150) ' Create rectangle for source image. Dim srcRect As New Rectangle(50, 50, 150, 150) Dim units As GraphicsUnit = GraphicsUnit.Pixel ' Draw image to screen. e.Graphics.DrawImage(newImage, destRect, srcRect, units) End Sub
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
