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POhow to convert FormatConvertedBitmap to Stream in C#
 

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  1. POhow to convert FormatConvertedBitmap to Stream in C#
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    <p>I am new to C#.</p> <p>I want to convert <code>FormatConvertedBitmap</code> to <code>Stream</code> as said earlier. I couldn't find any method for that. I thought to save or write the FormatConvertedBitmap to a file so that reading it as a Stream, but even couldn't find a way to write it to a file.</p> <p>can some one help me in either :</p> <ol> <li>Converting FormatConvertedBitmap to an Stream Or</li> <li>Writing FormatConvertedBitmap to a file and then reading it as Stream.</li> </ol> <p>public Stream Image</p> <pre><code> { get {//some condition if (_image != null) { _image.Seek(0, SeekOrigin.Begin); BitmapImage bmp = new BitmapImage(); MemoryStream stream = (MemoryStream)_image; bmp.BeginInit(); bmp.StreamSource = stream; bmp.CacheOption = System.Windows.Media.Imaging.BitmapCacheOption.OnLoad; bmp.EndInit(); var grayBitmapSource = new FormatConvertedBitmap(); grayBitmapSource.BeginInit(); grayBitmapSource.Source = bmp; grayBitmapSource.DestinationFormat = PixelFormats.Gray32Float; grayBitmapSource.EndInit(); Stream st=new MemoryStream(); //File.WriteAllBytes(Path.GetTempPath(),grayBitmapSource); return grayBitmapSource; } </code></pre> <p>In the above code I am getting the Image as Stream from the server then on some condition I am converting it to grayScale image . but now we sould return an Stream and finaly we have FormatConvertedBitmap.</p> #####<strong><em>EDIT</em></strong> <pre><code>public Stream Image { get { //some condition if (_image != null) { _image.Seek(0, SeekOrigin.Begin); BitmapImage bmp = new BitmapImage(); MemoryStream stream = (MemoryStream)_image; bmp.BeginInit(); bmp.StreamSource = stream; bmp.CacheOption = System.Windows.Media.Imaging.BitmapCacheOption.OnLoad; bmp.EndInit(); var grayBitmapSource = new FormatConvertedBitmap(); grayBitmapSource.BeginInit(); grayBitmapSource.Source = bmp; grayBitmapSource.DestinationFormat = PixelFormats.Gray32Float; grayBitmapSource.EndInit(); int bytePerPixel = grayBitmapSource.Format.BitsPerPixel / 8; int width = grayBitmapSource.PixelWidth; int height = grayBitmapSource.PixelHeight; int stride = width * bytePerPixel; byte[] resultLine = new byte[height * stride]; grayBitmapSource.CopyPixels(resultLine, stride, 0); MemoryStream ms = new MemoryStream(resultLine); return ms; </code></pre>
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