Exporting a WriteableBitmap as an image file

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Hi,

I need to export a WriteableBitmap that I get after cropping an image. I am not getting how to do that, I am using the following:

C#

try
            {
                byte[] byteStream;
                byteStream = ToByteArray(sample);
                Stream stream = new MemoryStream(byteStream);
                if (filename != null && filename != "")
                {
                    string imgCropFileName = "Crop_" + DateTime.Now.Day + filename;
                    MessageBox.Show("FileName" + " " + imgCropFileName);
                    UploadFile(imgCropFileName, stream);
                }
                else
                    MessageBox.Show("FileName" + " " + filename);
            }
            catch (Exception ex) { MessageBox.Show(ex.Message); }

In the code segment ToByteArray is a function to convert WriteableBitmap into array of bytes.
For uploading, I am using a generic handler which when hit and get relevant parameters, uploads the file.
Please help me.

Posted 13-Mar-13 7:12am

Ariana Bond

Updated 13-Mar-13 7:49am

v3

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Sergey Alexandrovich Kryukov 13-Mar-13 13:52pm

I'm just curious: did you try to search for the answer? It could take just a minute to find out...
—SA

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Sergey Alexandrovich Kryukov · Answer 1 · 2013-03-13T07:51:00

This is done by a separate class, one of the derived classes based on System.Windows.Media.Imaging.BitmapEncoder. Please see:
http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.bitmapencoder.aspx[^].

Actually, this is a very good WFP feature: persistence is isolated from images. If you think about it, you will see that it helps to follow the fundamental OOP development Open/Close Principle:
http://en.wikipedia.org/wiki/Open_Closed_Principle[^].

—SA