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WriteableBitmap.WritePixels Method (Int32Rect, IntPtr, Int32, Int32, Int32, Int32)

Updates the pixels in the specified region of the bitmap.

Namespace:  System.Windows.Media.Imaging
Assembly:  PresentationCore (in PresentationCore.dll)

Public Sub WritePixels ( _
	sourceRect As Int32Rect, _
	sourceBuffer As IntPtr, _
	sourceBufferSize As Integer, _
	sourceBufferStride As Integer, _
	destinationX As Integer, _
	destinationY As Integer _


Type: System.Windows.Int32Rect

The rectangle in sourceBuffer to copy.

Type: System.IntPtr

The input buffer used to update the bitmap.

Type: System.Int32

The size of the input buffer.

Type: System.Int32

The stride of the input buffer, in bytes.

Type: System.Int32

The destination x-coordinate of the left-most pixel in the back buffer.

Type: System.Int32

The destination y-coordinate of the top-most pixel in the back buffer.


One or more of the following conditions is true.

sourceRect falls outside the bounds of the WriteableBitmap.

destinationX or destinationY is outside the bounds of the WriteableBitmap.

sourceBufferSize < 1

sourceBufferStride < 1


sourceBuffer is Nothing.

Call the WritePixels method to update the WriteableBitmap automatically with the contents of sourceBuffer. Calling this method is the equivalent of using the Lock and Unlock workflow described in the WriteableBitmap class remarks.


In partial trust, use the WritePixels(Int32Rect, Array, Int32, Int32, Int32) overload.

.NET Framework

Supported in: 4.5, 4, 3.5 SP1, 3.0 SP2

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, 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.

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