C# Insert批量插入

最近项目需要做一个批量导入的功能，每次导入最少的记录数都达到1万，之前写了一个通过循环Insert的方法，结果我自己都看不下了。太慢了，所以用了SqlBulkCopy，很快，100万条数据，1分钟都不到。

class Program
    {
        /// <summary>
        /// 批量插入
        /// </summary>
        /// <param name="dt">数据集</param>
        public static void BulkToDB(DataTable dt)
        {
            using (SqlConnection sqlConn = new SqlConnection("Data Source=.;uid=sa;pwd=123456;Initial Catalog=Test"))
            {
                SqlBulkCopy bulkCopy = new SqlBulkCopy(sqlConn);
                bulkCopy.DestinationTableName = "UserInfo";  //要插入数据的表名
                bulkCopy.BatchSize = dt.Rows.Count;          //插入的条数

                try
                {
                    sqlConn.Open();
                    if (dt != null && dt.Rows.Count != )
                        bulkCopy.WriteToServer(dt);
                }
                catch (Exception ex)
                {
                    throw ex;
                }
                finally
                {
                    sqlConn.Close();
                    if (bulkCopy != null)
                        bulkCopy.Close();
                }
            }
        }

        /// <summary>
        /// 创建表结构,（Id（自增）,LoginName，LoginPwd）
        /// </summary>
        /// <returns></returns>
        public static DataTable GetTableSchema()
        {
            DataTable dt = new DataTable();
            dt.Columns.AddRange(new DataColumn[]{
                new DataColumn("Id",typeof(int)),
                new DataColumn("LoginName",typeof(string)),
                new DataColumn("LoginPwd",typeof(string))
            });

            return dt;
        }

        static void Main(string[] args)
        {
            //100万条数据
            Stopwatch sw = new Stopwatch();
            for (int multiply = ; multiply < ; multiply++)
            {
                DataTable dt = GetTableSchema();
                for (int count = multiply * ; count < (multiply + ) * ; count++)
                {
                    DataRow r = dt.NewRow();
                   // r[0] = 1;//因为该列是自增列，所以可以不赋值
                    r[] = string.Format("Name-{0}", count * multiply);
                    r[] = string.Format("Pwd-{0}", count * multiply);
                    dt.Rows.Add(r);
                }
                sw.Start();
                BulkToDB(dt);
                sw.Stop();
                Console.WriteLine(string.Format("Elapsed Time is {0} Milliseconds", sw.ElapsedMilliseconds));
            }
            Console.ReadLine();
        }
    }

执行结果：