breaking out of my infinite loop

I have two buttons one for start and one for stop in my UI form,and i have one infinite loop that executes some function in my class name programs in a method.The start button is clicked by the user it invokes this method to execute the infinite loop and i need to break this infinite loop when the user clicks the stop button,after that my compiler will break out of this infinite loop and enters to the code inside the button stop click. I am trying to use the Application.DoEvents() method,this is working well if my infinite loop code is inside of the start button click,but if my infinite loop code is in the new class which is created by me i.e programs,how can use the Application.DoEvents() method to break out of this infinite loop.

Example:

namespace inFiniteLoopTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        bool stopBtnClk = false;
        bool startBtnClk = false;

        private void StartBtn_Click(object sender, EventArgs e)
        {
            stopBtnClk=fal开发者_运维技巧se;

            startBtnClk = true;

            while(true)
            {
                //some code to be executed
                Application.DoEvents();
                if (stopBtnClk == true)
                {
                   break;
                }
            }
        }

        private void StopBtn_Click(object sender, EventArgs e)
        {
            stopBtnClk = true;
            if (startBtnClk == true)
            {
                //Application.Exit();
                MessageBox.Show("success");

            }

        }

this is working well.

But

public class programs
{    
    public static void infiniteLoop(bool stopBtnClick)
    {    
        while(true)
        {
            //some code to be executed
            Application.DoEvents();
            if (stopBtnClk == true)
            {
                break;
            }
        }
    }    
} 

//and my UI code to call this class is
namespace inFiniteLoopTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        bool stopBtnClk = false;
        bool startBtnClk = false;

        private void StartBtn_Click(object sender, EventArgs e)
        {
            stopBtnClk=false;    
            startBtnClk = true;
            programs.infiniteLoop(stopBtnClk);
        }

        private void StopBtn_Click(object sender, EventArgs e)
        {
            stopBtnClk = true;
            if (startBtnClk == true)
            {
                //Application.Exit();
                MessageBox.Show("success");
            }
        }            
    }

but this is not working .

Even if the compiler displays the message "success" when the stop button is clicked, but the debugger still said running in my form. I hope my question is clear. And i am kindly requesting you to answer my question as soon as possible and get rid of this problem! I openly accept your answer if you come especially with a thread.

sorry i am a beginner for C#, but i need to continue on that.

Thank you!!

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Don't block the GUI thread. The fact that you have to use Application.DoEvents() to update the GUI is an indicator for bad design. Do the work in a separate worker thread.

BackgroundWorker is predestinated for such a task.

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Change signature of your infiniteLoop method like this:

public static void infiniteLoop(ref bool stopBtnClick) ...

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The code you have provided is really difficult to read but as far as I can see when you create your infinite loop do:while(looping) // do stuff

Then when you press the Stop button set the bool variable looping to false and it will break out of the loop and show the message.

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In the second code snippet, the infinite loop is started in a subroutine that accepts a boolean value as a parameter. How does that subroutine ever get a second chance to take a look at that boolean? It only "sees" the value once, and it's false at that time. It's a scoping question.

---

Why instead of an infinite loop you use a start stop condition determined by the buttons?

I thinking you can have a variable, just call it

bool stop_loop = false 

and your loop

while(!stop_loop){ //CODE HERE }

Now when you click the first button (Start) you call the method (wherever it is) to start the loop. The loop is going to seem endless until you click the button stop and the value of stop_loop become in True.

HTH