Image class and Stream class

[eloberg]

I have an array of gray level bytes I want to show on screen. In order to do that I use Stream and Image classes like the following:

Stream strm;
Image img;
Graphics grfx;
strm.Write(pByteArray,0,nSize);
img = Image.FromStream(strm);
grfx.DrawImage(0,0,width,height);

But I get an error saying:

Use of unassigned local variable strm in the statement
img = Image.FromStream(strm);

What have I done wrong?