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  • 数据流处理数据

    using System;
    using System.Collections.Generic;
    using System.Data;
    using System.Data.SqlClient;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Threading.Tasks.Dataflow;//引用命名空间
    
    namespace TPL数据流处理数据
    {
        class Program
        {
            /*建表脚本
             
    CREATE TABLE [dbo].[Persons](
        [ID] [int] NULL,
        [Name] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,
        [Age] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,
        [Sex] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,
        [Addres] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,
        [Height] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,
        [Weight] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL
    ) 
             
             */
            //https://msdn.microsoft.com/zh-cn/vstudio/hh228603(v=vs.96)#predefined_types
            static readonly string connectionString = "Data Source=.;Initial Catalog=TplDB;Persist Security Info=True;User ID=sa;Password=xxxxx";
            public class Person
            {
                public int ID { get; set; }
                public string Name { get; set; }
                public int Age { get; set; }
                public string Sex { get; set; }
                public string Addres { get; set; }
                public string Height { get; set; }
                public string Weight { get; set; }
                static int RandomSeed()
                {
                    byte[] bytes = new byte[4];
                    System.Security.Cryptography.RNGCryptoServiceProvider rng = new System.Security.Cryptography.RNGCryptoServiceProvider();
                    rng.GetBytes(bytes);
                    return BitConverter.ToInt32(bytes, 0);
                }
                //待插入生成对象
                public static ITargetBlock<Person> GetPerson(ITargetBlock<Person> list, int count)
                {
                    for (int i = 0; i < count; i++)
                    {
                        //生成不重复随机信息
                        Random ran = new Random(RandomSeed());
                        list.Post(new Person { ID = i, Name = "Jhon" + i, Age = ran.Next(18, 70), Sex = i % 2 == 0 ? "" : "", Addres = "滨江滨河路" + i, Height = ran.Next(155, 210) + "cm", Weight = ran.Next(40, 200) + "kg" });
                    }
                    return list;
                }
                //使用缓冲区
                public static void ADDPersons(int count)
                {
                    //创建一个ActionBlock添加多个对象,并设置批处理大小
                    var batchs = new BatchBlock<Person>(1024 * 1024 * 1024);
                    var insertEmployees = new ActionBlock<Person[]>(a => InsertPersons(a));
                    //链接批块动作块
                    batchs.LinkTo(insertEmployees);
                    // 当批块完成时,设置动作块也完成。
                    batchs.Completion.ContinueWith(delegate { insertEmployees.Complete(); });
                    //对象批处理块。
                    GetPerson(batchs,count);
                    //设置批块完成状态,等待,插入操作完成。
                    batchs.Complete();
                    insertEmployees.Completion.Wait();
                }
                //不使用缓冲区
                public static void AddPersons(string connectionString, int count)
                {
                    var insertEmployee = new ActionBlock<Person>(e => InsertPersons(new Person[] { e }));
                    GetPerson(insertEmployee, count);
                    //设置状态
                    insertEmployee.Complete();
                    insertEmployee.Completion.Wait();
                }
    
                //插入信息
                public static void InsertPersons(Person[] list)
                {
                    SqlConnection sqlConn = new SqlConnection(connectionString);//连接数据库  
                    try
                    {
                        SqlCommand sqlComm = new SqlCommand();
                        sqlComm.CommandText = @"INSERT INTO [TplDB].[dbo].[Persons]([ID] ,[Name],[Age] ,[Sex] ,[Addres],[Height],[Weight]) VALUES(@ID,@Name,@Age ,@Sex ,@Addres ,@Height ,@Weight)";//参数化SQL  
                        sqlComm.Parameters.Add("@ID", SqlDbType.Int);
                        sqlComm.Parameters.Add("@Name", SqlDbType.VarChar);
                        sqlComm.Parameters.Add("@Age", SqlDbType.VarChar);
                        sqlComm.Parameters.Add("@Sex", SqlDbType.VarChar);
                        sqlComm.Parameters.Add("@Addres", SqlDbType.VarChar);
                        sqlComm.Parameters.Add("@Height", SqlDbType.VarChar);
                        sqlComm.Parameters.Add("@Weight", SqlDbType.VarChar);
                        sqlComm.CommandType = CommandType.Text;
                        sqlComm.Connection = sqlConn;
                        sqlConn.Open();
                        for (int i = 0; i < list.Length; i++)
                        {
                            sqlComm.Parameters.Clear();
                            sqlComm.Parameters.Add("@ID", list[i].ID);
                            sqlComm.Parameters.Add("@Name", list[i].Name);
                            sqlComm.Parameters.Add("@Age", list[i].Age);
                            sqlComm.Parameters.Add("@Sex", list[i].Sex);
                            sqlComm.Parameters.Add("@Addres", list[i].Addres);
                            sqlComm.Parameters.Add("@Height", list[i].Height);
                            sqlComm.Parameters.Add("@Weight", list[i].Weight);
                            int m = sqlComm.ExecuteNonQuery();
                        }
    
                    }
                    catch (Exception ex)
                    {
                        throw ex;
                    }
                    finally
                    {
                        sqlConn.Close();
                    }
    
    
                }
    
            }
    
            static void Main(string[] args)
            {
               
                Person.ADDPersons(10000);
                Console.ReadKey();
            }
       
          
        }
    
     
    
    
    }
    View Code
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  • 原文地址:https://www.cnblogs.com/BABLOVE/p/4466196.html
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