How to copy embedded text file in a sequence like file1.txt, file2.txt... to another location in c#.net windows application?

private void button1_Click(object sender, EventArgs e)
      {
          try
          {
              var resourceName = "WindowsFormsApplication3.TextFile1.txt";
              WriteResourceToFile(resourceName, "C:\\1.txt");
          }
          catch
          {
              MessageBox.Show("Error accessing resources");
          }
      }
      public void WriteResourceToFile(string resourceName, string fileName)
      {
          using (var resource = Assembly.GetExecutingAssembly().GetManifestResourceStream(resourceName))
          {
              SplitFile(resource, fileName);
          }
      }
      public void SplitFile(Stream source, string sourceFileName)
      {
          string destFileLocation = @"C:\";
          int index = 0;
          long maxFileSize = 52428800;
          byte[] buffer = new byte[65536];
          while (source.Position < source.Length)
          {
              index++;
              // Create a new sub File, and read into t
              string newFileName = Path.Combine(destFileLocation, Path.GetFileNameWithoutExtension(sourceFileName));
              newFileName += index.ToString() + Path.GetExtension(sourceFileName);
              using (Stream destination = File.OpenWrite(newFileName))
              {
                  while (destination.Position < maxFileSize)
                  {
                      // Work out how many bytes to read
                      int bytes = source.Read(buffer, 0, (int)Math.Min(maxFileSize, buffer.Length));
                      destination.Write(buffer, 0, bytes);
                      // Are we at the end of the file?
                      if (bytes < Math.Min(maxFileSize, buffer.Length))
                      {
                          break;
                      }
                  }
              }
          }
      }