MULTITHREADING IN C#

multitreading in c#

MULTITHREADING IN C#

            “Multiple threading is a process of using multiple threads in a project to execute different methods separately without waiting for one another”

            Basically by default all applications are single threaded model in which only one thread or only main thread executes all the instruction in sequence. If any problem such as server response or data base response delay due to any reason, then the entire program wait until the response without executing the rest of lines or method our program stay stuck in a method without executing the other methods. Therefore we use multiple threading in project to execute different method separately, if one method stuck for a while then all the rest method will execute without wasting time.

Syntax of Multithreading

    using System.Threading;

          Main function

      {

            Thread t1 = new Thread(METHOD NMAE);

            Thread t2 = new Thread(METHOD NAME);

            Thread t3 = new Thread(METHOD NAME);

            t1.Start();

             t2.Start();

             t3.Start();

    }

            First of all we have to include the System . Threading directive in our project after then we will instantiate the instance of Thread and will pass the method name as parameter that should execute through that thread, if the methods are non-static then in parameter section we also have to specify the instance of class in that class the specific method defines. At last we explicitly start the thread. See the example for more deep.

EXAMPLE OF MULTITHREADING IN C#

using System.Threading;

namespace MultithreadingDemo

{

    static class Muliplethread

    {

        public static void Testmethod1()

        {

            Console.WriteLine("Thread 1 starting");

            for (int i=1;i<100;i++)

                Console.WriteLine("Testmethod1: line no" + i);

            Console.WriteLine("Thread 1 exiting");

        }

        public static void Testmethod2()

        {

            Console.WriteLine("Thread 2 starting");

            for (int i = 1; i < 100; i++)

                Console.WriteLine("Testmethod2: line no" + i);

            Console.WriteLine("Thread 2 exiting");

        }

        public static void Testmethod3()

        {

            Console.WriteLine("Thread 3 starting");

            for (int i = 1; i < 100; i++)

                Console.WriteLine("Testmethod3: line no" + i);

            Console.WriteLine("Thread 3 exiting");

        }

        static void Main()

        {

            Console.WriteLine("Main thread starting");

            Thread t1 = new Thread(Testmethod1);

            Thread t2 = new Thread(Testmethod2);

            Thread t3 = new Thread(Testmethod3);

            t1.Start(); t2.Start(); t3.Start();

            Console.WriteLine("Main thread exiting");

            Console.ReadKey();

        }

    }

}

Quick overview of single threaded model and multithreaded model programs

Single threaded model	Multithreaded model
Single threaded model program are those program in which only Main thread execute the entire program/application.	In multithreaded model program Main thread makes multiple child threads to execute the program/application.
If any problem rise in any method for a while. The time to execute the rest method will increase. So total time of execution also increased.	Due to multiple threads we can save lots of time if any problem rises in any method for a while.

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