C# WPF program button click run a task until another button click stop

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C#

WPF

threads

Hello everyone,

I am creating a WPF app where I want to have a global bool im assuming, on the first button click I’ll set this bool to true and I want it to run a task (continuously call an API method) until I click the button again and it stops it. What would be the best way to do this?

private bool running = false;

private async void BtnTrade1_Buy_Click(object sender, RoutedEventArgs e)
{
    if (!running)
    {
        running = true;
    }
    else
        running = false;

    if (running)
    {
        RunningNrunnin(running);
        //tradeClient.GetTradeHistory();
    }
}

public void RunningNrunnin(bool running)
{
    if (running)
    {
        Task task = new Task(() =>
        {
            while (running)
            {
                GetTradeHistory();
                Thread.Sleep(2000);
            }
        });
        task.Start();
    }
}

I agree with using a CancellationToken.
How can I use it with the same button? I been trying a bunch of things but haven't done it yet.

public async Task<int> GetTradeTest(CancellationToken cancelToken)
{
    int i = 0;
    // while(cancelToken == null)
    // {
        await Task.Delay(1000);
        i++;
    // }
    return i;
}

public Task<int> ExecuteOrCancel(CancellationToken token)
{
    Task<int> task = null;

    task = Task.Run(() =>
    {
        int result = 0;
        while (true)
        {
            if (token.IsCancellationRequested)
            {
                // throw new TaskCanceledException(task);
            }

            Thread.Sleep(1000);
            result++;
        }
        return result;
    });
    
    return task;
}

public async Task<int> GetTradeTest(CancellationToken cancelToken)
{
    int i = 0;
    // while(cancelToken == null)
    // {
        await Task.Delay(1000);
        i++;
    // }
    return i;
}

public Task<int> ExecuteOrCancel(CancellationToken token)
{
    Task<int> task = null;

    task = Task.Run(() =>
    {
        int result = 0;
        while (true)
        {
            if (token.IsCancellationRequested)
            {
                // throw new TaskCanceledException(task);
            }

            Thread.Sleep(1000);
            result++;
        }
        return result;
    });
    
    return task;
}

    try
    {
        cancellationToken = new CancellationTokenSource();
        lblTest.Content = "Starting...";
    
        // int counterTest = await tradeClient.GetTradeTest(cancellationToken.Token);
        var counterTest = tradeClient.ExecuteOrCancel(cancellationToken.Token);
        lblTest.Content = "Started: " + counterTest;
                
        // if (running)
        // {
            // tradeClient.RunningHarkins(running);
            // tradeClient.GetTradeHistory();
        // }
    }
    catch (Exception ex)
    {
        // MessageBox.Show(ex.Message);
        lblTest.Content = "Canceled";
    }
    // cancellationToken = null;
}

What I have tried:

Tried coding, threading, tasks, using a global bool I can get that to turn true and false on button click but then i cant get the method to keep checking the bool status while its running. I know i have a good start just need a few finishing touches