writing a large stream to a file in C#.Net 64K by 64K

Question

Please suggest me a good method that can be used to write a stream into a file.

I just need a simple c# function that can take a stream as input and do the job.. I need to do this for very large files ie files > 4GB.

Can this be done better using linq,extension methods etc?

Please provide me a good utility function that can also return the progress in percentage through yield.

Edit: I know about looping through a byte[] and writing it to a file. I've tried File.WriteAllBytes method. But,I'm just looking for a very nice way of doing it using linq,yield and extension methods.

Answer 1

Edit: Here is a utility function that should do the trick:

Update: Changed second parameter to file name

    public delegate void ProgressCallback(long position, long total);
    public void Copy(Stream inputStream, string outputFile, ProgressCallback progressCallback)
    {
        using (var outputStream = File.OpenWrite(outputFile))
        {
            const int bufferSize = 4096;
            while (inputStream.Position < inputStream.Length)
            {
                byte[] data = new byte[bufferSize];
                int amountRead = inputStream.Read(data, 0, bufferSize);
                outputStream.Write(data, 0, amountRead);

                if (progressCallback != null)
                    progressCallback(inputStream.Position, inputStream.Length);
            }
            outputStream.Flush();
        }
    }