8 replies to this topic

[Howdy_McGee]

Ok, so i'm trying to get back in to the swing of C# but i'm running into a constant problem when creating these simple applications. I can't get a label to dynamically update in a form application. In command prompt it's not a big deal but when I try to do it in forms it just will not work.

Here's what i'm currently trying to do: Create a stop watch in which you can see the time as it counts, dynamically. Here's my code:

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Diagnostics;

using System.Threading;


namespace WindowsFormsApplication1

{

    public partial class Form1 : Form

    {

        Stopwatch stopWatch = new Stopwatch();


        public Form1()

        {

            InitializeComponent();

        }


        private void start_Click(object sender, EventArgs e)

        {

            stopWatch.Start();

        }


        private void stop_Click(object sender, EventArgs e)

        {

            stopWatch.Stop();

            timePrint();

        }


        private void reset_Click(object sender, EventArgs e)

        {

            stopWatch = Stopwatch.StartNew();

        }


        private void timePrint()

        {

            label1.Text = stopWatch.ElapsedTicks.ToString();

            hours.Text = "Time elapsed: " + stopWatch.Elapsed;

        }

    }

}

Any suggestions on how I should go about this?

[Simonxz]

Drag and drop a timer into your form. Add to your constructor :

timer1.Start();

Make a Tick event, call timePrint() in it, it should work.

[Howdy_McGee]

I tried that with no luck. I thought the timer control was only for ASP.NET?

[Momerath]

If it appears in the controls list in the IDE, it can be used in a form.

When you start your stopwatch you'll also need to start the timer.

[Simonxz]

    public partial class Form1 : Form {

        Stopwatch stopWatch = new Stopwatch();


        public Form1() {

            InitializeComponent();

            stopWatch.Start();

            timer1.Start();

        }


        private void start_Click(object sender, EventArgs e) {

            stopWatch.Start();

        }


        private void stop_Click(object sender, EventArgs e) {

            stopWatch.Stop();

        }


        private void timer1_Tick(object sender, EventArgs e) {

            label1.Text = stopWatch.ElapsedTicks.ToString();

            hours.Text = "Time elapsed: " + stopWatch.Elapsed;

        }


        private void reset_Click(object sender, EventArgs e) {

            stopWatch = Stopwatch.StartNew();

        }

    }

I tried the timer and it works for me

[Howdy_McGee]

I copied the exact code that you put in and added the timer and label 1. It doesn't print out anything though or show any time when I start or stop. This is the code I have now

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Diagnostics;

using System.Threading;


namespace WindowsFormsApplication1

{

    public partial class Form1 : Form

    {

        Stopwatch stopWatch = new Stopwatch();


        public Form1()

        {

            InitializeComponent();

            stopWatch.Start();

            timer1.Start();

        }


        private void start_Click(object sender, EventArgs e)

        {

            stopWatch.Start();

        }


        private void stop_Click(object sender, EventArgs e)

        {

            stopWatch.Stop();

        }


        private void timer1_Tick(object sender, EventArgs e)

        {

            label1.Text = stopWatch.ElapsedTicks.ToString();

            hours.Text = "Time elapsed: " + stopWatch.Elapsed;

        }


        private void reset_Click(object sender, EventArgs e)

        {

            stopWatch = Stopwatch.StartNew();

        }

    }

}

[Momerath]

Did you attach the timer1_Tick event to the Tick event of the timer?

[Simonxz]

Yes, you need to attach it to the Timer_Tick event.

[Howdy_McGee]

:D It works. And I can use Elapsed.Minutes/Elapsed.Hours to style it how I want it. That's great thanks guys