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Illustrates use of MemoryStreams

/* Mastering Visual C# .NET by Jason Price, Mike Gunderloy Publisher: Sybex; ISBN: 0782129110 */  /*   Example15_13.cs illustrates use of MemoryStreams */ using System; using System.Windows.Forms; using System.IO; public class Example15_13  {   // SaveMemoryStream saves the MemoryStream as a file   public static void SaveMemoryStream(     MemoryStream ms, string FileName)   {     FileStream outStream = File.OpenWrite(FileName);     ms.WriteTo(outStream);     outStream.Flush();     outStream.Close();   }     [STAThread]   public static void Main()    {     // use an open file dialog to get a filename     OpenFileDialog dlgOpen = new OpenFileDialog();     dlgOpen.Title="Select file to back up";     if (dlgOpen.ShowDialog() == DialogResult.OK)     {       // Read the file into a MemoryStream       FileStream inStream = File.OpenRead(dlgOpen.FileName);       MemoryStream storeStream = new MemoryStream();       // copy all data from in to store       storeStream.SetLength(inStream.Length);       inStream.Read(storeStream.GetBuffer(), 0, (int)inStream.Length);       // clean up       storeStream.Flush();       inStream.Close();       // pass the store to a method to write it out       SaveMemoryStream(storeStream, dlgOpen.FileName + ".bak");       storeStream.Close();     }   } }