ADO.NET异步操作测试

配置文件：

<?xml version="1.0"?>
<configuration>
  <startup>

    <supportedRuntime version="v2.0.50727"/>
  </startup>

  <appSettings>

    <add key="Test" value="Data Source=10.68.108.3;Initial Catalog=ZhanJiang;Persist Security Info=True;User ID=eerpsa;Password=eerpP@ssword;Asynchronous Processing=true;MultipleActiveResultSets=true"/>
  </appSettings>
</configuration>

异步操作的连接字符串要加入：Asynchronous Processing=true;MultipleActiveResultSets=true

测试代码：

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data.SqlClient;
using System.Diagnostics;
using System.Linq;
using System.Text;

namespace TestConsoleApp
{
    [NUnit.Framework.TestFixture]
    public class SyncADONetTest
    {

        [NUnit.Framework.Test]
        public void test()
        {
            Console.WriteLine("test");
            var sqlConnection = new SqlConnection(ConfigurationManager.AppSettings["Test"]);
            sqlConnection.Open();
            var cmd = new SqlCommand();
            cmd.Connection = sqlConnection;

            Stopwatch sw = new Stopwatch();
            sw.Start();
            for (var i = 0; i < 1000; i++)
            {
                cmd.CommandText = "INSERT INTO Test (UserName) VALUES ('" +
                    "user" + i.ToString() + "')";
                cmd.ExecuteNonQuery();
            }
            sw.Stop();
            var end = sw.ElapsedMilliseconds;
            Console.WriteLine("同步用时：{0}", end);

            sqlConnection.Close();

            var sqlConnection2 = new SqlConnection(ConfigurationManager.AppSettings["Test"]);
            sqlConnection2.Open();
           
            sw.Reset();
            sw.Start();
            for (var i = 0; i < 1000; i++)
            {
                var cmd2 = new SqlCommand();
                cmd2.Connection = sqlConnection2;
                cmd2.CommandText = "INSERT INTO Test (UserName) VALUES ('" +
                    "user" + i.ToString() + "')";
                cmd2.BeginExecuteNonQuery(ir => {
                    SqlCommand icmd = ir.AsyncState as SqlCommand;
                    icmd.EndExecuteNonQuery(ir);
                }, null);
            }
            sw.Stop();
            var end2 = sw.ElapsedMilliseconds;
            Console.WriteLine("异步用时：{0}", end2);
            sqlConnection.Close();
        }
    }
}

测试结果：

参考：https://technet.microsoft.com/zh-cn/library/zw97wx20(v=vs.100).aspx