mcs/class/corlib/System.Threading/AsyncFlowControl.cs

   1 //
   2 // System.Threading.AsyncFlowControl structure
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 #if NET_2_0
  30
  31 using System;
  32 using System.Globalization;
  33 using System.Runtime.InteropServices;
  34
  35 namespace System.Threading {
  36
  37         [ComVisibleAttribute (false)]
  38         public struct AsyncFlowControl : IDisposable {
  39
  40                 private bool _undo;
  41
  42                 [MonoTODO]
  43                 public void Undo ()
  44                 {
  45                         if (_undo) {
  46                                 throw new InvalidOperationException (Locale.GetText (
  47                                         "Can only be called once."));
  48                         }
  49                         // TODO
  50                         _undo = true;
  51                 }
  52
  53                 void IDisposable.Dispose ()
  54                 {
  55                         if (!_undo)
  56                                 Undo ();
  57                 }
  58         }
  59 }
  60
  61 #endif