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diff --git a/dotnet/Qpid.Common/AMQConnectionClosedException.cs b/dotnet/Qpid.Common/AMQConnectionClosedException.cs
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+++ b/dotnet/Qpid.Common/AMQConnectionClosedException.cs
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+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+
+using System;
+using System.Runtime.Serialization;
+
+namespace Apache.Qpid
+{
+    /// <summary>
+    /// AMQConnectionClosedException indicates that a connection has been closed.
+    ///
+    /// <p/>This exception is really used as an event, in order that the method handler that raises it creates an event
+    /// which is propagated to the io handler, in order to notify it of the connection closure.
+    ///
+    /// <p/><table id="crc"><caption>CRC Card</caption>
+    /// <tr><th> Responsibilities <th> Collaborations
+    /// <tr><td> Represents a the closure of a connection.
+    /// </table>
+    /// </summary>
+    [Serializable]
+    public class AMQConnectionClosedException : AMQException
+    {
+        public AMQConnectionClosedException(int errorCode, string message)
+            : base(errorCode, message)
+        {
+        }
+
+        protected AMQConnectionClosedException(SerializationInfo info, StreamingContext ctxt)
+            : base(info, ctxt)
+        {
+        }
+    }
+}