MemoryStream.CopyTo Not working

Question

TiffBitmapDecoder decoder = new TiffBitmapDecoder(imageStreamSource, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);

using (MemoryStream allFra         


        

Answer 1

After writing to ms, the position of ms is at its end. You have to seek to the beginning of the stream, e.g. with:

ms.Seek(0,System.IO.SeekOrigin.Begin);

After that ms.CopyTo is working correctly.

Answer 2

Reset Position of ms to 0 after you fill it:

enc.Save(ms);
ms.Position = 0;
ms.CopyTo(allFrameStream);

From Stream.CopyTo

Copying begins at the current position in the current stream

Answer 3

Try executing allFrameStream.Position = 0; just before writing to the PDF.