Question

I get from server images and videos by stream.
Now I’m saving it:

 Stream str = client.GetFile(path);
                    using (var outStream = new FileStream(@"c:\myFile.jpg", FileMode.Create))
                    {
                        var buffer = new byte[4096];
                        int count;
                        while ((count = str.Read(buffer, 0, buffer.Length)) > 0)
                        {
                            outStream.Write(buffer, 0, count);
                        }
                    }

I can be jpg, mpg, flv and a lot of other multimedia types (Before I get stream I know what is a extension of this file).

Now I want to not save it , but run direct from stream.

Examples:

I get stream which is mybirthay.avi and I call my method RunFile(stream) and I think this method should works like System.Diagnostics.Process.Start(path), so my stream should be opened by default program in my SO for example allplayer.

I get stream from myfile.jpg and it is opening by irfanview,

etc…

Is it possible ??

Answer 1

Windows puts up a wall between processes so they cannot directly access each other’s memory without going through privileged debug-like API functions like ReadProcessMemory. This is what keeps the operating system stable and secure. But spells doom for what you are trying to accomplish.

You’ll need to use a file. It won’t be much slower than direct memory access, the file system cache takes care of that.