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Common/DTS.Common.Utilities/.svn/pristine/5c/5cea1af5e2c4556b16bc796cd8c343e1d5dfea35.svn-base

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+
+//
+// FileMapIOException.cs
+//    
+//    Implementation of a library to use Win32 Memory Mapped
+//    Files from within .NET applications
+//
+// COPYRIGHT (C) 2001, Tomas Restrepo (tomasr@mvps.org)
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+
+namespace DTS.Common.Utilities.IO.MemoryMap
+{
+
+    /// <summary>Exception class thrown by the library</summary>
+    /// <remarks>
+    ///   Represents an exception occured as a result of an
+    ///   invalid IO operation on any of the File mapping classes
+    ///   It wraps the error message and the underlying Win32 error
+    ///   code that caused the error.
+    /// </remarks>
+    // TODO: Make Serializable!
+    public class FileMapIOException : IOException
+    {
+        //
+        // properties
+        //
+        private int m_win32Error = 0;
+        /// <summary>
+        /// the Win32 Error code describing the error.
+        /// http://msdn.microsoft.com/en-us/library/ms681381%28VS.85%29.aspx
+        /// </summary>
+        public int Win32ErrorCode => m_win32Error;
+
+        /// <summary>
+        /// A description of the error.
+        /// </summary>
+        public override string Message
+        {
+            get
+            {
+                if (Win32ErrorCode != 0)
+                    return base.Message + " (" + Win32ErrorCode + ")";
+                else
+                    return base.Message;
+            }
+        }
+
+        /// <summary>
+        /// Construct a <see cref="IO.MemoryMap.FileMapIOException"/>
+        /// </summary>
+        /// <param name="error">win32 error code describing error</param>
+        public FileMapIOException(int error)
+            : base()
+        {
+            m_win32Error = error;
+        }
+        /// <summary>
+        /// Construct a <see cref="IO.MemoryMap.FileMapIOException" />
+        /// </summary>
+        /// <param name="message">description of error</param>
+        public FileMapIOException(string message)
+            : base(message)
+        {
+        }
+        /// <summary>
+        /// Construct a <see cref="IO.MemoryMap.FileMapIOException" />
+        /// </summary>
+        /// <param name="message">description of error</param>
+        /// <param name="innerException">exception causing the error</param>
+        public FileMapIOException(string message, Exception innerException)
+            : base(message, innerException)
+        {
+        }
+
+    } // class FileMapIOException
+
+
+} // namespace Winterdom.IO.FileMap