.NET F ---> .NET CF / Problem with image

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Hello

I'm working on a Web Services consummer application for Windows and Pocket PC.

I meet a problem :
I get images from a database in a byte array :
myStream = System.IO.MemoryStream(myByteArray)

then I rebuild images with :
myImage = Image.FromFile(myStream)

It works on desktop

But on PPC, the FromFile method doesn't exist !!! Does anybody know how to convert some bytearray into image with the Compact Framework in C#.

thanks a lot !!

Julien