使用SqlBulkCopy类批量复制大数据

 using System;
 using System.Configuration;
 using System.Data;
 using System.Data.SqlClient;
 using System.Diagnostics;
 
 namespace SqlBulkCopy1
 {
     class Program
     {
         static void Main(string[] args)
         {
             Stopwatch sw = new Stopwatch();
             for (int multiply = ; multiply < ; multiply++)
             {
                 DataTable dt = GetTableSchema();
                 for (int count = multiply * ; count < (multiply + ) * ; count++)
                 {
                     DataRow r = dt.NewRow();
                     r[] = count;
                     r[] = string.Format("username-{0}", count * multiply);
                     r[] = string.Format("userpwd-{0}", count * multiply);
                     r[] = string.Format("address-{0}", count * multiply);
                     dt.Rows.Add(r);
                 }
                 sw.Start();
                 BulkToDB(dt);
                 sw.Stop();
                 Console.WriteLine(string.Format("已消耗时间{0}毫秒", sw.ElapsedMilliseconds));
             }
             Console.ReadLine();
         }
         public static void BulkToDB(DataTable dt)
         {
             SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["SqlConnString"].ConnectionString);
             SqlBulkCopy bulkCopy = new SqlBulkCopy(con);
             bulkCopy.DestinationTableName = "USERINFO";
             bulkCopy.BatchSize = dt.Rows.Count;
             try
             {
                 con.Open();
                 if (dt != null && dt.Rows.Count != )
                     bulkCopy.WriteToServer(dt);
             }
             catch (Exception)
             {
 
                 throw;
             }
         }
 
         public static DataTable GetTableSchema()
         {
             DataTable dt = new DataTable();
             dt.Columns.AddRange(new DataColumn[] {
             new DataColumn("id",typeof(int)),
             new DataColumn("username",typeof(string)),
             new DataColumn("userpwd",typeof(string)),
             new DataColumn("address",typeof(string))
             });
             return dt;
         }
     }
 }

100W条数据消耗时间：