How to get a Stream from in-memory Image?

Question

I have an in-memory Image, I need to get a Stream from it to write into an OpenXML document. Can someone please point me to the correct method.

Answer 1

You can use an overload of the Save method that takes a Stream as a parameter. To create a stream that exists in-memory, you can use MemoryStream type. Something like this should work:

// Create new memory stream and save the image
var ms = new MemoryStream();
image.Save(ms, ImageFormat.Jpeg);

// Seek to the first byte in the stream, so that other classes who
// use it will start reading from the beginning
ms.Seek(0, SeekOrgin.Begin);

Now you can pass the newly created stream ms to other objects (e.g. to save it in OpenXML). See also:

• Image.Save method at MSDN