数据同步对比步骤:

1.将两数据库中对应的数据表分别生成XML文件

         /// <summary>         /// 将一个DataTable以xml方式存入指定的文件中         /// </summary>         /// <param name="dt"></param>         /// <param name="filePath"></param>         public void SaveDataTableToXml(DataTable dt, string filePath)         {             //创建文件夹             if (!Directory.Exists(Path.GetDirectoryName(filePath)))             {                 Directory.CreateDirectory(Path.GetDirectoryName(filePath));             }

            DataSet ds = new DataSet();             ds.Tables.Add(dt.Copy());             ds.WriteXml(filePath);         }

        /// <summary>         /// 从一个指定的文件中读取DataTable         /// </summary>         /// <param name="filePath"></param>         public DataTable ReadDataTableFromXml(string filePath)         {             DataSet ds = new DataSet();             ds.ReadXml(filePath);             if (ds.Tables.Count > 0)             {                 return ds.Tables[0];             }             else             {                 return null;             }         }

2.上传要对比的XML数据文件到服务器端或者是从服务器下载XML文件到本地

        C#Sockect异步传送或者WebClient方式传送

3.对比要同步的数据资料

         /// <summary>         /// 对比文件         /// </summary>         /// <param name="localFile">本地文件</param>         /// <param name="remoteFile">远程文件</param>         /// <returns></returns>         private bool FileCompare(string localFile, string remoteFile)         {             int localFilebyte;             int remoteFilebyte;             FileStream localFileStream;             FileStream remoteFileStream;             if (localFile == remoteFile)             {                 return true;             }             localFileStream = new FileStream(localFile, FileMode.Open);             remoteFileStream = new FileStream(remoteFile, FileMode.Open);             if (localFileStream.Length != remoteFileStream.Length)             {                 localFileStream.Close();                 remoteFileStream.Close();                 return false;             }             do             {                 localFilebyte = localFileStream.ReadByte();                 remoteFilebyte = remoteFileStream.ReadByte();             }             while ((localFilebyte == remoteFilebyte) && (localFilebyte != -1));             localFileStream.Close();             remoteFileStream.Close();             return ((localFilebyte - remoteFilebyte) == 0);         }         /// <summary>         /// 对比数据表         /// </summary>         /// <param name="localDataTable">本地数据表</param>         /// <param name="remoteDataTable">远程数据表</param>         /// <returns></returns>         public bool DataTableCompare(DataTable localDataTable, DataTable remoteDataTable)         {             if (localDataTable == null || remoteDataTable == null)             {                 return false;             }             if (localDataTable.Rows.Count != remoteDataTable.Rows.Count)             {                 return false;             }             if (localDataTable.Columns.Count != remoteDataTable.Columns.Count)             {                 return false;             }             for (int i = 0; i < localDataTable.Rows.Count; i++)             {                 for (int j = 0; j < localDataTable.Columns.Count; j++)                 {                     if (localDataTable.Rows[i][j].ToString() != remoteDataTable.Rows[i][j].ToString())                     {                         return false;                     }                 }             }             return true;         }