Async Command Object : SqlCommand « Database ADO.net « C# / C Sharp

1. C# / C Sharp
2. Database ADO.net
3. SqlCommand

Async Command Object

 

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.SqlClient;

using System.Runtime.Remoting.Messaging;
using System.Threading;

class Program {
    static void Main(string[] args) {
        SqlConnection cn = new SqlConnection();
        cn.ConnectionString = "uid=sa;pwd=;Initial Catalog=Cars;Asynchronous Processing=true;Data Source=(local)";
        cn.Open();

        string strSQL = "WaitFor Delay '00:00:02';Select * From Inventory";
        SqlCommand myCommand = new SqlCommand(strSQL, cn);

        IAsyncResult itfAsynch;
        itfAsynch = myCommand.BeginExecuteReader(CommandBehavior.CloseConnection);

        while (!itfAsynch.IsCompleted) {
            Console.WriteLine("Working on main thread...");
            Thread.Sleep(1000);
        }
        SqlDataReader myDataReader = myCommand.EndExecuteReader(itfAsynch);
        while (myDataReader.Read()) {
            Console.WriteLine("-> Make: {0}, PetName: {1}, Color: {2}.",
              myDataReader["Make"].ToString().Trim(),
              myDataReader["PetName"].ToString().Trim(),
              myDataReader["Color"].ToString().Trim());
        }
        myDataReader.Close();
    }
}

 

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