Question

我是Microsoft Sync Framework的新手，并使用以下Microsoft的示例进行测试（请参阅http://msdn.microsoft.com/en-us/library/ff928758.aspx）：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;
using Microsoft.Synchronization;
using Microsoft.Synchronization.Data;
using Microsoft.Synchronization.Data.SqlServer;
using Microsoft.Synchronization.Data.SqlServerCe;

namespace ExecuteExpressSync
{
    class Program
    {
        static void Main(string[] args)
        {
            SqlConnection clientConn = new SqlConnection(@"Data Source=.\SQLCLIENT; Initial Catalog=SyncExpressDB; Trusted_Connection=Yes");

            SqlConnection serverConn = new SqlConnection("Data Source=localhost\\SQLEXPRESS; Initial Catalog=SyncDB; Integrated Security=True");

            // create the sync orhcestrator
            SyncOrchestrator syncOrchestrator = new SyncOrchestrator();

            // set local provider of orchestrator to a sync provider associated with the 
            // ProductsScope in the SyncExpressDB express client database
            syncOrchestrator.LocalProvider = new SqlSyncProvider("ProductsScope", clientConn);


            // set the remote provider of orchestrator to a server sync provider associated with
            // the ProductsScope in the SyncDB server database
            syncOrchestrator.RemoteProvider = new SqlSyncProvider("ProductsScope", serverConn);


            // set the direction of sync session to Upload and Download
            syncOrchestrator.Direction = SyncDirectionOrder.UploadAndDownload;


            // subscribe for errors that occur when applying changes to the client
            ((SqlCeSyncProvider)syncOrchestrator.RemoteProvider).ApplyChangeFailed += new EventHandler<DbApplyChangeFailedEventArgs>(Program_ApplyChangeFailed);
            ((SqlCeSyncProvider)syncOrchestrator.LocalProvider).ApplyChangeFailed += new EventHandler<DbApplyChangeFailedEventArgs>(Program_ApplyChangeFailed);

            // 
            makeConflict(clientConn, "999");
            makeConflict(serverConn, "666");

            // execute the synchronization process
            SyncOperationStatistics syncStats = syncOrchestrator.Synchronize();

            // print statistics
            Console.WriteLine("Start Time: " + syncStats.SyncStartTime);
            Console.WriteLine("Total Changes Uploaded: " + syncStats.UploadChangesTotal);
            Console.WriteLine("Total Changes Downloaded: " + syncStats.DownloadChangesTotal);
            Console.WriteLine("Download failed: " + syncStats.DownloadChangesFailed);
            Console.WriteLine("Upload Changes failed: " + syncStats.UploadChangesFailed);
            Console.WriteLine("Complete Time: " + syncStats.SyncEndTime);
            Console.WriteLine(String.Empty);

            Console.ReadLine();

        }

        static void Program_ApplyChangeFailed(object sender, DbApplyChangeFailedEventArgs e)
        {
            // display conflict type
            Console.WriteLine(e.Conflict.Type);

            // display error message 
            Console.WriteLine(e.Error);
        }

        private static void makeConflict(SqlConnection nodeConn, String price)
        {
            int rowCount = 0;

            using (nodeConn)
            {
                SqlCommand sqlCommand = nodeConn.CreateCommand();

                sqlCommand.CommandText = "UPDATE Products SET ListPrice = " + price + " WHERE Name = 'PCClient' ";


                nodeConn.Open();
                rowCount = sqlCommand.ExecuteNonQuery();
                nodeConn.Close();

            }
        }

    }
}

我的本地PC上有两个用于测试环境的SQL-Server实例（SQLCLIENT和SQLEXPRESS）。我的问题是，虽然我通过调用makeConflict（）来创建冲突，但是不会触发ApplyChangeFailed-Event，makeConflict（）在products表中为一行执行UPDATE，一次为服务器和客户端执行。结果是服务器或客户端获胜，具体取决于SyncDirectionOrder属性。

我做错了什么？

Answer 1

改变这个：

（（SqlCeSyncProvider）syncOrchestrator

到此：

（（SqlSyncProvider）syncOrchestrator

您使用的是SqlSyncProvider，而不是SqlCeSyncProvider

Answer 2

为避免进一步混淆，这里是实际的代码。问题仍然存在。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;
using Microsoft.Synchronization;
using Microsoft.Synchronization.Data;
using Microsoft.Synchronization.Data.SqlServer;
using Microsoft.Synchronization.Data.SqlServerCe;

namespace ExecuteExpressSync
{
    class Program
    {
        static void Main(string[] args)
        {
            SqlConnection clientConn = new SqlConnection(@"Data Source=.\SQLCLIENT; Initial Catalog=SyncExpressDB; Trusted_Connection=Yes");

            SqlConnection serverConn = new SqlConnection("Data Source=localhost\\SQLEXPRESS; Initial Catalog=SyncDB; Integrated Security=True");

            // create the sync orhcestrator
            SyncOrchestrator syncOrchestrator = new SyncOrchestrator();

            // set local provider of orchestrator to a sync provider associated with the 
            // ProductsScope in the SyncExpressDB express client database
            syncOrchestrator.LocalProvider = new SqlSyncProvider("ProductsScope", clientConn);


            // set the remote provider of orchestrator to a server sync provider associated with
            // the ProductsScope in the SyncDB server database
            syncOrchestrator.RemoteProvider = new SqlSyncProvider("ProductsScope", serverConn);


            // set the direction of sync session to Upload and Download
            syncOrchestrator.Direction = SyncDirectionOrder.UploadAndDownload;


            // subscribe for errors that occur when applying changes to the client
            ((SqlSyncProvider)syncOrchestrator.RemoteProvider).ApplyChangeFailed += new EventHandler<DbApplyChangeFailedEventArgs>(Program_ApplyChangeFailed);
            ((SqlSyncProvider)syncOrchestrator.LocalProvider).ApplyChangeFailed += new EventHandler<DbApplyChangeFailedEventArgs>(Program_ApplyChangeFailed);

            // 
            makeConflict(clientConn, "999");
            makeConflict(serverConn, "666");

            // execute the synchronization process
            SyncOperationStatistics syncStats = syncOrchestrator.Synchronize();

            // print statistics
            Console.WriteLine("Start Time: " + syncStats.SyncStartTime);
            Console.WriteLine("Total Changes Uploaded: " + syncStats.UploadChangesTotal);
            Console.WriteLine("Total Changes Downloaded: " + syncStats.DownloadChangesTotal);
            Console.WriteLine("Download failed: " + syncStats.DownloadChangesFailed);
            Console.WriteLine("Upload Changes failed: " + syncStats.UploadChangesFailed);
            Console.WriteLine("Complete Time: " + syncStats.SyncEndTime);
            Console.WriteLine(String.Empty);

            Console.ReadLine();

        }

        static void Program_ApplyChangeFailed(object sender, DbApplyChangeFailedEventArgs e)
        {
            // display conflict type
            Console.WriteLine(e.Conflict.Type);

            // display error message 
            Console.WriteLine(e.Error);
        }

        private static void makeConflict(SqlConnection nodeConn, String price)
        {
            int rowCount = 0;

            using (nodeConn)
            {
                SqlCommand sqlCommand = nodeConn.CreateCommand();

                sqlCommand.CommandText = "UPDATE Products SET ListPrice = " + price + " WHERE Name = 'PCClient' ";


                nodeConn.Open();
                rowCount = sqlCommand.ExecuteNonQuery();
                nodeConn.Close();

            }
        }

    }
}

Answer 3

有效！我猜我需要一台专用服务器是对的。我在两个客户端主机上更改了同一行，并在同步第二个客户端后触发了“localupdateremoteupdate”冲突。

Microsoft Sync Framework冲突事件不会触发

3 个答案: