c# 批量处理数据录入

 c# 分批处理数据录入

 //using System.Text;

 //using System.Data;

 //using System.Data.SqlClient;

 //using System;

 //namespace InsertEfficiency

 //{

 //    class Program

 //    {

 //        static void Main(string[] args)

 //        {

 //            //构造数据源

 //            DataTable dt = new DataTable();

 //            dt.Columns.Add(new DataColumn("ID", typeof(int)));

 //            dt.Columns.Add(new DataColumn("CreateDateTime", typeof(DateTime)));

 //            dt.Columns.Add(new DataColumn("TestMethod", typeof(string)));

 //            for (int i = 1; i <= 30; i++)

 //            {

 //                dt.Rows.Add(new object[] { i, DateTime.Now, "ExecuteSqlBulkCopy" });

 //            }

 //            Test t = new Test();

 //            DateTime begin1 = DateTime.Now;

 //            t.ExecuteRowByRow(dt);

 //            DateTime end1 = DateTime.Now;

 //            Console.WriteLine("ExecuteRowByRow:{0}ms", (end1 - begin1).Milliseconds);

 //            DateTime begin2 = DateTime.Now;

 //            t.ExecuteOnce(dt);

 //            DateTime end2 = DateTime.Now;

 //            Console.WriteLine("ExecuteOnce:{0}ms", (end2 - begin2).Milliseconds);

 //            DateTime begin3 = DateTime.Now;

 //            t.ExecuteSqlBulkCopy(dt);

 //            DateTime end3 = DateTime.Now;

 //            Console.WriteLine("ExecuteSqlBulkCopy:{0}ms", (end3 - begin3).Milliseconds);

 //            Console.ReadLine();

 //        }

 //    }

 //    class Test

 //    {

 //        public Test()

 //        {

 //        }

 //        public void ExecuteRowByRow(DataTable dt)

 //        {

 //            using (SqlConnection conn = new SqlConnection(GetConnectionString))

 //            {

 //                conn.Open();

 //                for (int rowIndex = 0; rowIndex < dt.Rows.Count; rowIndex++)

 //                {

 //                    DataRow dr = dt.Rows[rowIndex];

 //                    SqlCommand cmd = new SqlCommand();

 //                    cmd.Connection = conn;

 //                    cmd.CommandText = string.Format("insert into TestTable values ({0},'{1}','{2}')",

 //                        dr[0].ToString(), dr[1].ToString(), "ExecuteRowByRow");

 //                    cmd.ExecuteNonQuery();

 //                }

 //            }

 //        }

 //        public void ExecuteOnce(DataTable dt)

 //        {

 //            StringBuilder strSql = new StringBuilder();

 //            for (int rowIndex = 0; rowIndex < dt.Rows.Count; rowIndex++)

 //            {

 //                DataRow dr = dt.Rows[rowIndex];

 //                string sql = string.Format("insert into TestTable values ({0},'{1}','{2}')",

 //                        dr[0].ToString(), dr[1].ToString(), "ExecuteOnce");

 //                if (strSql.ToString().Length == 0)

 //                {

 //                    strSql.Append(sql);

 //                }

 //                else

 //                {

 //                    strSql.Append(";").Append(sql);

 //                }

 //            }

 //            using (SqlConnection conn = new SqlConnection(GetConnectionString))

 //            {

 //                conn.Open();

 //                SqlCommand cmd = new SqlCommand();

 //                cmd.Connection = conn;

 //                cmd.CommandText = strSql.ToString();

 //                cmd.ExecuteNonQuery();

 //            }

 //        }

 //        public void ExecuteSqlBulkCopy(DataTable dt)

 //        {

 //            using (SqlConnection conn = new SqlConnection(GetConnectionString))

 //            {

 //                SqlBulkCopy bulk = new SqlBulkCopy(conn);

 //                bulk.DestinationTableName = "TestTable";

 //                bulk.BatchSize = dt.Rows.Count;

 //                if (dt != null && dt.Rows.Count != 0)

 //                {

 //                    conn.Open();

 //                    bulk.WriteToServer(dt);

 //                }

 //                bulk.Close();

 //            }

 //        }

 //        string GetConnectionString

 //        {

 //            get

 //            {

 //                //return @"server=.\mssqlserver2005;database=test;uid=sa;pwd=123456";

 //                return @"server=SA-PC\SQLEXPRESS;database=test;uid=sa;pwd=123";

 //            }

 //        }

 //    }

 //}

 using System.Text;

 using System.Data;

 using System.Data.SqlClient;

 using System.Threading;

 using System;

 namespace InsertEfficiency

 {

     class Program

     {

         static void Main(string[] args)

         {

             Test t = new Test();

             t.Testing();

             Console.ReadLine();

         }

     }

     class Test

     {

         DataTable dt = new DataTable();

         public Test()

         {

            CreateData();

         }

         private void CreateData()

         {

             //构造数据源

             dt.Columns.Add(new DataColumn("ID", typeof(int)));

             dt.Columns.Add(new DataColumn("CreateDateTime", typeof(DateTime)));

             dt.Columns.Add(new DataColumn("TestMethod", typeof(string)));

             for (int i = ; i <= ; i++)

             {

                 dt.Rows.Add(new object[] { i, DateTime.Now, "ExecuteSqlBulkCopy" });

             }

         }

         public void Testing()

         {

             for (int i = ; i < ; i++)

             {

                 Thread t = new Thread(new ParameterizedThreadStart(ExcuteTesting));

                 t.Start(i);

             }

         }

         private void ExcuteTesting(object TreadNo)

         {

             //DateTime begin1 = DateTime.Now;

             //ExecuteRowByRow();

             //DateTime end1 = DateTime.Now;

             //Console.WriteLine("Tread-{0}-ExecuteRowByRow:{1}ms", TreadNo, (end1 - begin1).Milliseconds);

             DateTime begin2 = DateTime.Now;

             ExecuteOnce();

             DateTime end2 = DateTime.Now;

             Console.WriteLine("Tread-{0}-ExecuteOnce:{1}ms", TreadNo, (end2 - begin2).Milliseconds);

             //DateTime begin3 = DateTime.Now;

             //ExecuteSqlBulkCopy();

             //DateTime end3 = DateTime.Now;

             //Console.WriteLine("Tread-{0}-ExecuteSqlBulkCopy:{1}ms", TreadNo, (end3 - begin3).Milliseconds);

             //Console.WriteLine("Tread-{0} execute successfully\r\n", TreadNo);

         }

         private void ExecuteRowByRow()

         {

             using (SqlConnection conn = new SqlConnection(GetConnectionString))

             {

                 SqlCommand cmd = new SqlCommand();

                 cmd.Connection = conn;

                 DataRow dr;

                 conn.Open();

                 SqlTransaction tran = conn.BeginTransaction();

                 try

                 {

                     for (int rowIndex = ; rowIndex < dt.Rows.Count; rowIndex++)

                     {

                         dr = dt.Rows[rowIndex];

                         cmd.CommandText = string.Format("insert into TestTable values ({0},'{1}','{2}')",

                             dr[].ToString(), dr[].ToString(), "ExecuteRowByRow");

                         cmd.ExecuteNonQuery();

                     }

                     tran.Commit();

                 }

                 catch

                 {

                     tran.Rollback();

                 }

             }

         }

         private void ExecuteOnce()

         {

             StringBuilder strSql = new StringBuilder();

             for (int rowIndex = ; rowIndex < dt.Rows.Count; rowIndex++)

             {

                 DataRow dr = dt.Rows[rowIndex];

                 string sql = string.Format("insert into TestTable values ({0},'{1}','{2}')",

                 dr[].ToString(), dr[].ToString(), "ExecuteOnce");

                 if (strSql.ToString().Length == )

                 {

                     strSql.Append(sql);

                 }

                 else

                 {

                     strSql.Append(";").Append(sql);

                 }

             }

             using (SqlConnection conn = new SqlConnection(GetConnectionString))

             {

                 SqlCommand cmd = new SqlCommand();

                 cmd.Connection = conn;

                 cmd.CommandText = strSql.ToString();

                 conn.Open();

                 cmd.ExecuteNonQuery();

             }

         }

         public void ExecuteSqlBulkCopy()

         {

             using (SqlConnection conn = new SqlConnection(GetConnectionString))

             {

                 SqlBulkCopy bulk = new SqlBulkCopy(conn);

                 bulk.DestinationTableName = "TestTable";

                 bulk.BatchSize = dt.Rows.Count;

                 if (dt != null && dt.Rows.Count != )

                 {

                     conn.Open();

                     bulk.WriteToServer(dt);

                 }

                 bulk.Close();

             }

         }

         private string GetConnectionString

         {

             get

             {

                 return @"server=SA-PC\SQLEXPRESS;database=test;uid=sa;pwd=123";

             }

         }

     }

 }