thread program.....................

Posted by Anand under C# on 2/29/2012 | Points: 10 | Views : 2230 | Status : [Member] | Replies : 2

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can someone please explain me this program the output is
Done but it is being printed only once
it should b printing Done twice
its not my program this was thought in our class today

using System;
using System.Threading;

class ThreadTest
{
bool done;

static void Main()
{
ThreadTest tt = new ThreadTest(); // Create a common instance
new Thread (tt.Go).Start();
tt.Go();
}

// Note that Go is now an instance method
void Go()
{
if (!done) { done = true; Console.WriteLine ("Done"); }
}
}

-

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Posted by: Hmanjarawala on: 2/29/2012 [Member] Bronze | Points: 25

0	Hi this because, you have put condition on done which is global variable. write your code like: using System; using System.Threading; class ThreadTest { bool done; static void Main() { ThreadTest tt = new ThreadTest(); // Create a common instance new Thread (tt.Go).Start(); done=false; tt.Go(); } // Note that Go is now an instance method void Go() { if (!done) { done = true; Console.WriteLine ("Done"); } } } Himanshu Manjarawala Sr. Software Engineer@AutomationAnywhere http://fieredotnet.wordpress.com/ Anand, if this helps please login to Mark As Answer. \| Alert Moderator

Hi this because, you have put condition on done which is global variable.
write your code like:


using System;

using System.Threading;





class ThreadTest

{

bool done;



static void Main()

{

ThreadTest tt = new ThreadTest(); // Create a common instance

new Thread (tt.Go).Start();

done=false;

tt.Go();

}



// Note that Go is now an instance method

void Go()

{

if (!done) { done = true; Console.WriteLine ("Done"); }

}

}

Himanshu Manjarawala
Sr. Software Engineer@AutomationAnywhere
http://fieredotnet.wordpress.com/

Anand, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Anand on: 3/1/2012 [Member] Starter | Points: 25

0	OK sir its showing mean error object reference not set to an instance variable and sir can u sir can u me small example on Locks in thread c# :) - Anand, if this helps please login to Mark As Answer. \| Alert Moderator

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