Extensions.SaveJpeg Method

  • Article

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Encodes a WriteableBitmap object into a JPEG stream, with parameters for setting the target width and height of the JPEG file.

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

Syntax

<ExtensionAttribute> _
Public Shared Sub SaveJpeg ( _
    bitmap As WriteableBitmap, _
    targetStream As Stream, _
    targetWidth As Integer, _
    targetHeight As Integer, _
    orientation As Integer, _
    quality As Integer _
)

public static void SaveJpeg(
    this WriteableBitmap bitmap,
    Stream targetStream,
    int targetWidth,
    int targetHeight,
    int orientation,
    int quality
)

Parameters

  • orientation
    Type: System..::.Int32
    This parameter is not currently used by this method. Use a value of 0 as a placeholder.
  • quality
    Type: System..::.Int32
    This parameter represents the quality of the JPEG photo with a range between 0 and 100, with 100 being the best photo quality. We recommend that you do not fall lower than a value of 70. because JPEG picture quality diminishes significantly below that level.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type WriteableBitmap. When you use instance method syntax to call this method, omit the first parameter.

Remarks

Note

The position of targetStream cannot be used to determine the size of the encoded data. Further use of targetStream can have unpredictable results if the position of the stream is not explicitly set.

Version Information

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Platforms

Windows Phone

See Also

Reference

Extensions Class

System.Windows.Media.Imaging Namespace