SQLServer中批量插入数据方式

技术方案：
ADO.NET2.0的一个新的特性：SqlBulkCopy。有关这个的性能，很早之前我是亲自做过性能测试的，效率非常高。

     /// <summary>
        /// 使用SqlBulkCopy方式插入数据
        /// </summary>
        /// <param name="dataTable"></param>
        /// <returns></returns>
        private static long SqlBulkCopyInsert()
        {
            Stopwatch stopwatch = new Stopwatch();
            stopwatch.Start();

            DataTable dataTable = GetTableSchema();
            string passportKey;
            for (int i = 0; i < count; i++)
            {
                passportKey = Guid.NewGuid().ToString();
                DataRow dataRow = dataTable.NewRow();
                dataRow[0] = passportKey;
                dataTable.Rows.Add(dataRow);
            }

            SqlBulkCopy sqlBulkCopy = new SqlBulkCopy(connectionString);
            sqlBulkCopy.DestinationTableName = "Passport";
            sqlBulkCopy.BatchSize = dataTable.Rows.Count;
            SqlConnection sqlConnection = new SqlConnection(connectionString);
            sqlConnection.Open();
            if (dataTable!=null && dataTable.Rows.Count!=0)
            {
                sqlBulkCopy.WriteToServer(dataTable);
            }
            sqlBulkCopy.Close();
            sqlConnection.Close();

            stopwatch.Stop();
            return stopwatch.ElapsedMilliseconds;
        }
 
     private static DataTable GetTableSchema()
        {
            DataTable dataTable = new DataTable();
            dataTable.Columns.AddRange(new DataColumn[] { new DataColumn("PassportKey") });
            
            return dataTable;
        }