mcs/class/corlib/System.Runtime.InteropServices/ManagedErrorInfo.cs

   1 // ManagedErrorInfo class
   2 //
   3 // Eberhard Beilharz (eb1@sil.org)
   4 //
   5 // Copyright (C) 2012 SIL International
   6
   7 #if FEATURE_COMINTEROP
   8
   9 using System;
  10 using System.Runtime.CompilerServices;
  11 using System.Security;
  12
  13 namespace System.Runtime.InteropServices
  14 {
  15         /// <summary>
  16         /// Helper class that allows to pass an exception as an IErrorInfo object. This is useful
  17         /// when we get an exception in managed code that is called from unmanaged code that is called
  18         /// from managed code and we want to get to the exception in the outer managed code.
  19         /// </summary>
  20         internal class ManagedErrorInfo: IErrorInfo
  21         {
  22                 private Exception m_Exception;
  23                 public ManagedErrorInfo (Exception e)
  24                 {
  25                         m_Exception = e;
  26                 }
  27
  28                 public Exception Exception {
  29                         get { return m_Exception; }
  30                 }
  31
  32                 #region IErrorInfo
  33                 public int GetGUID (out Guid guid)
  34                 {
  35                         // not supported
  36                         guid = Guid.Empty;
  37                         return 0;
  38                 }
  39
  40                 public int GetSource (out string source)
  41                 {
  42                         source = m_Exception.Source;
  43                         return 0;
  44                 }
  45
  46                 public int GetDescription (out string description)
  47                 {
  48                         description = m_Exception.Message;
  49                         return 0;
  50                 }
  51
  52                 public int GetHelpFile (out string helpFile)
  53                 {
  54                         helpFile = m_Exception.HelpLink;
  55                         return 0;
  56                 }
  57
  58                 public int GetHelpContext(out uint helpContext)
  59                 {
  60                         // not supported
  61                         helpContext = 0;
  62                         return 0;
  63                 }
  64                 #endregion
  65         }
  66 }
  67
  68 #endif