How to use progressbar control and timer control to display timelimit ?

Ravindra Rodge

Hi Programmers,
I am intermediate level programmer in c#.
I am making an application in using visual studio 2008 and c# as language to conduct standalone objective type exam. My requirement is as follow:

I want to use the Progress Bar control to display the time limit of the exam.
The time must be displayed in minutes and secs.
Initially i want that the Progress Bar must be completely filled and time remaining must be displayed. As the Progress Bar control decreases the time should also be displayed decreasing.

How this can be achieved? Please help me.
If you have some code that would help me achieve this task then please forward me.

Thank you.

3 Replies

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Javeed M Shaikh15y ago
Accepted answer
I did try this on a sample project and looks like it goes in reverse as you have said, you have to customize the solution to solve your problem.

private void Button1_Click(System.Object sender, System.EventArgs e)
{
ProgressBar1.Value = ProgressBar1.Maximum;
ProgressBar1.Visible = true;
Timer1.Enabled = !Timer1.Enabled;
}

private void Timer1_Tick(System.Object sender, System.EventArgs e)
{
ProgressBar1.Value = ProgressBar1.Value - ProgressBar1.Minimum;
if (ProgressBar1.Value <= ProgressBar1.Minimum) {
Timer1.Enabled = false;
}
}

private void Form1_Load(System.Object sender, System.EventArgs e)
{
ProgressBar1.Maximum = 100;
ProgressBar1.Minimum = 1;
Timer1.Enabled = false;
Timer1.Interval = 15;
}

Please do not forget to mark "Accepted Answer"
0
Suthish Nair15y ago
VS 2010 sample attached. Remember to have validations...
0
Jean Paul15y ago
Dear Mr. Rodge,

Lot of fun in the world of c#.net.

For your problem, we have created a small implementation.

For running this, create a new windows application, add a label and progress bar on the form and use the following code:
public partial class Form1 : Form
{
private DateTime _startTime = DateTime.Now; // Set the starting time
private TimeSpan _timeSpan = new TimeSpan(0, 1, 10); // 1 minute 10 seconds as total time

public Form1()
{
InitializeComponent();

// Initialize progress bar
progressBar1.Maximum = (int)_timeSpan.TotalSeconds;
progressBar1.Value = progressBar1.Maximum;
}

private void timer1_Tick(object sender, EventArgs e)
{
// Get the difference using TimeSpan type
TimeSpan span = (DateTime.Now - _startTime);

// Update progressbar
progressBar1.Value = progressBar1.Maximum -(int)span.TotalSeconds;

// Update label (need better way to do it :))
TimeSpan span2 = _timeSpan - span;
int diffTotalSeconds = (int)(_timeSpan.TotalSeconds - span.TotalSeconds);
int minutes = diffTotalSeconds / 60;
int seconds = diffTotalSeconds - (minutes * 60);

label1.Text = string.Format("Time Remaining: {0}:{1}", minutes, seconds);
}
}

For datetime difference calculations, you need to get familiar with the TimeSpan inbuilt class.
Let me know if any help needed further.

Regards,
Jean Paul
0