Threading in C#     

Threading is commonly used by developers to increase the performance of applications. The thread is a light-weight process. In Computer Science, a thread is the smallest sequenced program instructions that can be managed independently by a thread scheduler, which is typically a part of operating system (Wikipedia).

For creating threading application there some important methods which used regularly for implementing threading.

1: Thread Join

2: Thread Sleep

3: Thread Abort

Types of Threads in C#-

There are two types of Thread in C# i.e. Foreground Thread and Background Thread. Further, let's see the uses of these threads. 

The thread is the smallest unit of execution within a process. Multithreading is the ability to have multiple threads in memory at a given time and switch among them to handle multiple operations at the same time. Microsoft ’s.Net Framework provides excellent support for working with threads.

Often, c# supports the relevant execution of the task or program code through multithreading. If we want to summarize about multi-threads, "Multithreading consists of two or more program codes that run concurrently without affecting each other and each program code is called a thread". Use “System. Threading” namespace to implement multithreading in your program. Let us see a simple example of creating multithreading in c sharp. There are two types to create the thread in C#, first one is through the Thread Class and the second one is through the Thread-Start Delegate.

About to ThreadPool

Into the C#, the ThreadPool is basically a collection of threads that you can use to run asynchronous tasks. The ThreadPool handles pretty much everything for you — the application developer just provides a method to execute and the ThreadPool executes it when a thread becomes available.

Example - 1.

using System;

using System.Threading;



namespace MultithreadingApplication

{

    class ThreadCreationProgram

    {

        public static void CallToChildThread()

        {

            Console.WriteLine("Child thread starts");

        }

        static void Main(string[] args)

        {

            ThreadStart childref = new ThreadStart(CallToChildThread);

            Console.WriteLine("In Main: Creating the Child thread");

            Thread childThread = new Thread(childref);

            childThread.Start();

            Console.ReadKey();

        }

    }

}

Example-2.

using System.Text;

using System.Threading;

using System.Threading.Tasks;



 namespace Multithread

 {

     class Program

     {

         static void Main(string[] args)

         {

             Thread table2 = new Thread(new ThreadStart(tableA));

             Thread table3 = new Thread(new ThreadStart(tableB));

             table2.Start();

             table3.Start();

             Console.Read();

         }

         public static void tableA()

         {

             for (int i = 1; i < 11; i++)

                 Console.WriteLine("2*" + i + " = " + 2 * 2000);

         }

         public static void tableB()

         {

             for (int j = 1; j < 11; j++)

                 Console.WriteLine("3*" + j + " = " + 3 * j);

         }

     }

 }

Example - 3.

using System;

using System.Threading;

namespace BarrierEx

{

    class Program

    {

        static Barrier _barrier = new Barrier(4, barrier => Console.WriteLine());

        static void Main(string[] args)

        {

            Thread t1 = new Thread(DemoMethod);

            new Thread(DemoMethod).Start();

            new Thread(DemoMethod).Start();

            new Thread(DemoMethod).Start();

            t1.Start();

            Console.ReadKey();

        }

        static void DemoMethod()

        {

            Thread.CurrentThread.Name = "MyThread";



            for (int i = 0; i <=6; i++)

            {

                 Console.WriteLine(i + " " + Thread.CurrentThread.Name);

                       _barrier.SignalAndWait();

            }

        }

    }

}

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