Could not find a part of the path E:\Debug\VipBat

private void copyBat()
 {
  try
  {
  string source_dir = "E:\\Debug\\VipBat";
  string destination_dir = "C:\\Users\\pc\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup";
 
  if (!System.IO.Directory.Exists(destination_dir))
  {
  System.IO.Directory.CreateDirectory(destination_dir);
  } 
 
  // Create subdirectory structure in destination 
  foreach (string dir in Directory.GetDirectories(source_dir, "*", System.IO.SearchOption.AllDirectories))
  {
  Directory.CreateDirectory(destination_dir + dir.Substring(source_dir.Length)); 
  }
 
  foreach (string file_name in Directory.GetFiles(source_dir, "*.*", System.IO.SearchOption.AllDirectories))
  {
  File.Copy(file_name, destination_dir + file_name.Substring(source_dir.Length), true);
  }
  }
  catch (Exception e)
  {
  MessageBox.Show(e.Message, "HATA", MessageBoxButtons.OK, MessageBoxIcon.Warning);
  }
 }