Get name of current Windows user

This function returns a string of the currently logged in user on Windows. An empty string is returned if a valid name cannot be obtained.

   1:  /// <summary>

   2:  /// Returns the name of the currently logged on Windows user.

   3:  /// </summary>

   4:  /// <returns>

   5:  /// Current user logon name string. Returns an empty string if a valid name cannot be obtained.</returns>

   6:  private static string GetWindowsUserName()

   7:  {

   8:      System.Security.Principal.WindowsIdentity win_id = null;

   9:      string userName = String.Empty;

  10:   

  11:      try

  12:      {

  13:          // Get an object with details about the currently logged on Windows user.

  14:          win_id = System.Security.Principal.WindowsIdentity.GetCurrent();

  15:   

  16:          // Get current user domain name and logon name strings.

  17:          // [0] = Domain name.

  18:          // [1] = Logon name.

  19:          string[] names = win_id.Name.Split(new Char[] { '\\' }); // win_id.Name returns "Domain\Logon"

  20:   

  21:          if (names.Length == 2) { userName = (names[1]); }

  22:      }

  23:      catch (System.Security.SecurityException)

  24:      {

  25:          // Retrieving Windows user details failed so ensure returned name is an empty string.

  26:          userName = String.Empty;

  27:      }

  28:      finally

  29:      {

  30:          // Dispose of windows identity object.

  31:          if (win_id != null) { win_id.Dispose(); }

  32:      }

  33:   

  34:      return userName;

  35:  }