DataTable dt = new DataTable();
            dt.Columns.Add("ID", typeof(int));
            dt.Columns.Add("Name", typeof(string));
            dt.Columns.Add("Password", Type.GetType("System.String"));
            dt.Columns.Add("AddTime", typeof(DateTime));

            Stopwatch sw = new Stopwatch();
            sw.Start();

            for (int i = 0; i < 10000; i++)
            {
                //SqlHelper.ExecuteNonQuery(SqlHelper.Connstr, CommandType.Text, "insert into T_User(Name, Password, AddTime) values ('qq" + i + "', 'ww" + i + "', getdate())");
                dt.Rows.Add(null, "qq" + i, "ww" + i, DateTime.Now);
            }
            using (SqlConnection conn = new SqlConnection(SqlHelper.Connstr))
            {
                SqlBulkCopy bulkCopy = new SqlBulkCopy(conn);
                bulkCopy.DestinationTableName = "T_User";
                bulkCopy.BatchSize = dt.Rows.Count;
                conn.Open();
                if (dt != null && dt.Rows.Count != 0)
                {
                    bulkCopy.WriteToServer(dt);
                }
            }

            sw.Stop();
            TimeSpan ts = sw.Elapsed;
            Console.WriteLine(ts.TotalMilliseconds);

            Console.ReadKey();