/Kilimanjaro_Trunk/HelloWorld_CLR/HelloWorldClient/cs/HelloWorldClient/HelloWorldClient.cs

  1//-----------------------------------------------------------------------
  2//  This file is part of the Microsoft Code Samples.
  3// 
  4//  Copyright (C) Microsoft Corporation.  All rights reserved.
  5// 
  6//  This source code is intended only as a supplement to Microsoft
  7//  Development Tools and/or on-line documentation.  See these other
  8//  materials for detailed information regarding Microsoft code samples.
  9// 
 10//  THIS CODE AND INFORMATION ARE PROVIDED AS IS WITHOUT WARRANTY OF ANY
 11//  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 12//  IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
 13//  PARTICULAR PURPOSE.
 14//-----------------------------------------------------------------------
 15
 16#region Using directives
 17
 18using System;
 19using System.IO;
 20using System.Text;
 21using System.Data;
 22using System.Data.SqlTypes;
 23using System.Data.SqlClient;
 24using Microsoft.Samples.SqlServer;
 25
 26//System.Data.SqlClient.SqlConnection
 27//System.Data.SqlServer.SqlConnection
 28
 29#endregion
 30
 31namespace Microsoft.Samples.SqlServer
 32{
 33    class HelloWorldClient
 34    {
 35        static void Main()
 36        {
 37            SqlConnection conn = null;
 38            SqlTransaction tran = null;
 39            TextReader reader = null;
 40
 41            try
 42            {
 43                Console.WriteLine("Connecting to SQL Server instance");
 44
 45                // Create a connection
 46                conn = new SqlConnection(
 47                    "Initial Catalog=ssb_HelloWorld; Data Source=localhost;Integrated Security=SSPI;");
 48                // Open the connection
 49                conn.Open();
 50                Console.WriteLine("Connected to SQL Server instance");
 51
 52                // Begin a transaction
 53                tran = conn.BeginTransaction();
 54                Console.WriteLine("\nTransaction 1 begun");
 55
 56                // Create a service object
 57                Service client = new Service("HelloWorldClient", conn, tran);
 58
 59                // Set the FetchSize to 1 since we will receive one message at a time
 60                // i.e. use RECEIVE TOP(1)
 61                client.FetchSize = 1;
 62
 63                // Begin a dialog with the HelloWorld service
 64                Conversation dialog = client.BeginDialog(
 65                    "HelloWorldService",
 66					null,
 67 					"Greeting",
 68                    TimeSpan.FromMinutes(1),
 69                    false,
 70					conn,
 71					tran);
 72                Console.WriteLine("Dialog begun from service (HelloWorldClient) to service (HelloWorldService)");
 73
 74                // Create an empty request message
 75                Message request = new Message("Request", null);
 76
 77                // Send the message to the service
 78                dialog.Send(request, conn, tran);
 79                Console.WriteLine("Message sent of type '" + request.MessageType + "'");
 80
 81                tran.Commit(); // Message isn't sent until transaction has been committed
 82                Console.WriteLine("Transaction 1 committed");
 83
 84                // Begin transaction
 85				tran = conn.BeginTransaction();
 86				Console.WriteLine("\nTransaction 2 begun");
 87
 88				// Waitfor messages on this conversation
 89				Console.WriteLine("Waiting for Response....");
 90
 91				client.WaitforTimeout = TimeSpan.FromSeconds(5);
 92				if (client.GetConversation(dialog, conn, tran) == null)
 93				{
 94					Console.WriteLine("No message received - Ending dialog with Error");
 95					dialog.EndWithError(1, "no response within 5 seconds.", conn, tran);
 96					tran.Commit();
 97					Console.WriteLine("Transaction 2 committed");
 98					conn.Close();
 99					Console.WriteLine("\nConnection closed - exiting");
100					return;
101				}
102
103				// Fetch the message from the conversation
104				Message response = dialog.Receive();
105
106				// Output the message to the Console
107				//Console.WriteLine("Message received of type '" + response.Type + "'");
108				if (response.Body != null)
109				{
110					Console.Write("Message contains: ");
111					reader = new StreamReader(response.Body);
112					Console.WriteLine(reader.ReadToEnd());
113				}
114
115				// End the conversation
116				dialog.EndConversation(conn, tran);
117				Console.WriteLine("Ended Dialog");
118
119				//tran.Commit();  // Remember to commit again
120				Console.WriteLine("Transaction 2 committed");
121
122                // Close the database connection
123                conn.Close();
124                Console.WriteLine("\nConnection closed - exiting");
125            }
126            catch (ServiceException e)
127            {
128                Console.WriteLine("An exception occurred - {0}\n", e.ToString());
129                if (tran != null)
130                {
131                    tran.Rollback();
132                    Console.WriteLine("\nTransaction rolled back");
133                }
134                if (conn != null)
135                {
136                    conn.Close();
137                    Console.WriteLine("\nConnection closed - exiting");
138                }
139            }
140            finally
141            {
142                if (reader != null)
143                    reader.Close();
144
145                Console.WriteLine();
146                Console.WriteLine("Press Enter to Exit");
147                Console.ReadLine();
148            }
149        }
150    }
151}