Bitmap.Clone Method

Definition

Namespace:

System.Drawing

Assembly:

System.Drawing.Common.dll

Creates a copy of the section of this Bitmap defined with a specified PixelFormat.

Overloads

Clone(RectangleF, PixelFormat)	Creates a copy of the section of this Bitmap defined with a specified PixelFormat enumeration.
Clone(Rectangle, PixelFormat)	Creates a copy of the section of this Bitmap defined by Rectangle structure and with a specified PixelFormat enumeration.

Clone(RectangleF, PixelFormat)

Source:

Bitmap.cs

Creates a copy of the section of this Bitmap defined with a specified PixelFormat enumeration.

C#

public System.Drawing.Bitmap Clone(System.Drawing.RectangleF rect, System.Drawing.Imaging.PixelFormat format);

Parameters

rect

RectangleF

Defines the portion of this Bitmap to copy.

format

PixelFormat

Specifies the PixelFormat enumeration for the destination Bitmap.

Returns

Bitmap

The Bitmap that this method creates.

Exceptions

OutOfMemoryException

rect is outside of the source bitmap bounds.

ArgumentException

The height or width of rect is 0.

Examples

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 a Bitmap from a file.

• Clones a portion of that Bitmap.

• Draws the cloned portion to the screen.

C#

private void Clone_Example2(PaintEventArgs e)
{

    // Create a Bitmap object from a file.
    Bitmap myBitmap = new Bitmap("Grapes.jpg");

    // Clone a portion of the Bitmap object.
    RectangleF cloneRect = new RectangleF(0, 0, 100, 100);
    System.Drawing.Imaging.PixelFormat format =
        myBitmap.PixelFormat;
    Bitmap cloneBitmap = myBitmap.Clone(cloneRect, format);

    // Draw the cloned portion of the Bitmap object.
    e.Graphics.DrawImage(cloneBitmap, 0, 0);
}

Clone(Rectangle, PixelFormat)

Source:

Bitmap.cs

Creates a copy of the section of this Bitmap defined by Rectangle structure and with a specified PixelFormat enumeration.

C#

public System.Drawing.Bitmap Clone(System.Drawing.Rectangle rect, System.Drawing.Imaging.PixelFormat format);

Parameters

rect

Rectangle

Defines the portion of this Bitmap to copy. Coordinates are relative to this Bitmap.

format

PixelFormat

The pixel format for the new Bitmap. This must specify a value that begins with Format.

Returns

Bitmap

The new Bitmap that this method creates.

Exceptions

OutOfMemoryException

rect is outside of the source bitmap bounds.

ArgumentException

The height or width of rect is 0.

-or-

A PixelFormat value is specified whose name does not start with Format. For example, specifying Gdi will cause an ArgumentException, but Format48bppRgb will not.

Examples

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 a Bitmap from a file.

• Clones a portion of that Bitmap.

• Draws the cloned portion to the screen.

C#

private void Clone_Example1(PaintEventArgs e)
{

    // Create a Bitmap object from a file.
    Bitmap myBitmap = new Bitmap("Grapes.jpg");

    // Clone a portion of the Bitmap object.
    Rectangle cloneRect = new Rectangle(0, 0, 100, 100);
    System.Drawing.Imaging.PixelFormat format =
        myBitmap.PixelFormat;
    Bitmap cloneBitmap = myBitmap.Clone(cloneRect, format);

    // Draw the cloned portion of the Bitmap object.
    e.Graphics.DrawImage(cloneBitmap, 0, 0);
}