Read file into Memory Stream

	MemoryStream SourceXmlMemoryStream = new MemoryStream(File.ReadAllBytes(filename));

Write File From Memory Stream

	FileStream file = new FileStream(filename, FileMode.Create, FileAccess.Write);		//Overwrite the existing file
	OutputXmlMemoryStream.WriteTo(file);
	file.Close();
	OutputXmlMemoryStream.Close();

Seek

	SourceXmlMemoryStream.Seek(0, SeekOrigin.Begin);

or

	SourceXmlMemoryStream.Position = 0

Close Memory Stream

	SourceXmlMemoryStream.Dispose();

Write MemoryStream To File

(Overwrite if alreads exists)

	MemoryStream1.Position = 0;
	System.IO.File.WriteAllBytes("C:\\_Downloaded\\test1.bin", MemoryStream1.ToArray());

Convert Memory Stream to String

	string MyString = Encoding.UTF8.GetString(MyMemoryStream.ToArray());