How to use stop watch in c# Asp.net

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I am trying to develop a work status application using asp.net with c#

In this Project i want to calculate the break time.

I think stopwatch is best way to calculate the time.

In this project i have 2 buttons

1 start break
2 stop break

if the button 1 click stop watch want to start
if the button 2 click stop watch want to pass

how can i implement

Please help me

thanks in advance
Dineshkumar R

Posted 11-May-11 2:27am

R_D_K

Updated 11-May-11 2:31am

v3

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4 solutions

Solution 1

See Tiny StopWatch Application[^].

Posted 11-May-11 2:37am

Abhinav S

Solution 2

Hope A High-Precision Stopwatch for C#[^] article from CP might help you.

Posted 11-May-11 2:39am

Ramalinga Koushik

Solution 4

Try

A high precision stop watch class for timing in your C# or .NET programs[^]

Posted 11-May-11 3:02am

RaviRanjanKr

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Joshi, Rushikesh · Accepted Answer · 2011-05-11T02:40:00

Solution 3

Implement below class in your project.

public class StopWatch
    {
        private DateTime startTime;
        private DateTime stopTime;
        private bool running = false;

        public void Start()
        {
            this.startTime = DateTime.Now;
            this.running = true;
        }

        public void Stop()
        {
            this.stopTime = DateTime.Now;
            this.running = false;
        }

        // elaspsed time in milliseconds
        public double GetElapsedTime()
        {
            TimeSpan interval;
            if (running)
                interval = DateTime.Now - startTime;
            else
                interval = stopTime - startTime;
            return interval.TotalMilliseconds;
        }

        // elaspsed time in seconds
        public double GetElapsedTimeSecs()
        {
            TimeSpan interval;
            if (running)
                interval = DateTime.Now - startTime;
            else
                interval = stopTime - startTime;
            return interval.TotalSeconds;
        }

        
    }

Now create instance (Page Level Variable) of StopWatch Class.

StopWatch myWatch = new StopWatch();

And call myWatch.Start(); in button1_click and myWatch.Stop(); in button2_click.

Use myWatch.GetElapsedTimeSecs().ToString(); to display/get elapsed time.

In your ASPX code behind just add below changes

C#

public partial class _Default : System.Web.UI.Page
    {
        static StopWatch sw;
        //TimeSpan tt1 = TimeSpan.Zero;
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!this.IsPostBack)
                sw = new StopWatch();
        }

Reason: every time in clicking on button it creates new instance of sw object. We are checking here for is not postback.
Regards
Rushi

Posted 11-May-11 2:40am

Joshi, Rushikesh

Updated 11-May-11 4:10am

v2

Comments

R_D_K 11-May-11 9:09am

here my coding still is not working find it
C# Coding
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Windows.Forms;
using System.Diagnostics;

public partial class _Default : System.Web.UI.Page
{
Stopwatch sw = new Stopwatch();
TimeSpan tt1 = TimeSpan.Zero;
protected void Page_Load(object sender, EventArgs e)
{

}
protected void Button1_Click(object sender, EventArgs e)
{
sw.Start();
Button1.Enabled = false;
TextBox1.Text = System.DateTime.Now.ToString();
Button2.Enabled = true;
}
protected void Button2_Click(object sender, EventArgs e)
{
sw.Stop();
Button2.Enabled = false;
Button1.Enabled = true;
TextBox2.Text = System.DateTime.Now.ToString();
DateTime d1 = Convert.ToDateTime(TextBox1.Text);
DateTime d2 = Convert.ToDateTime(TextBox2.Text);
System.TimeSpan diff = d2.Subtract(d1);
tt1 = diff.Add(tt1);
TextBox3.Text = tt1.ToString();
//System.TimeSpan diff2 = diff.Add(diff1);
MessageBox.Show(sw.Elapsed.ToString());

}
public class StopWatch
{
private DateTime startTime;
private DateTime stopTime;
private bool running = false;

public void Start()
{
this.startTime = DateTime.Now;
this.running = true;
}

public void Stop()
{
this.stopTime = DateTime.Now;
this.running = false;
}

// elaspsed time in milliseconds
public double GetElapsedTime()
{
TimeSpan interval;
if (running)
interval = DateTime.Now - startTime;
else
interval = stopTime - startTime;
return interval.TotalMilliseconds;
}

// elaspsed time in seconds
public double GetElapsedTimeSecs()
{
TimeSpan interval;
if (running)
interval = DateTime.Now - startTime;
else
interval = stopTime - startTime;
return interval.TotalSeconds;
}

}
}
ASP.Net Coding

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>

<asp:TextBox ID="TextBox1" runat="server" ReadOnly="True">
<asp:TextBox ID="TextBox2" runat="server" ReadOnly="True">
<asp:TextBox ID="TextBox3" runat="server" ReadOnly="True">
<asp:Button ID="Button1" runat="server" AccessKey="A" onclick="Button1_Click"
Text="Button" />
<asp:Button AccessKey="M" ID="Button2" runat="server" onclick="Button2_Click"
Text="Button" Enabled="False" />
<asp:Button ID="Button3" runat="server" Text="Button" AccessKey="N"
Visible="False" />
<asp:TextBox ID="TextBox4" runat="server" Visible="False">00:00:00

</div>
</form>
</body>
</html>

Joshi, Rushikesh 11-May-11 10:12am

In your ASPX code behind just add below changes

<pre>
public partial class _Default : System.Web.UI.Page
{
static StopWatch sw;
//TimeSpan tt1 = TimeSpan.Zero;
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
sw = new StopWatch();
} </pre>

Reason: every time in clicking on button it creates new instance of sw object. We are checking here for is not postback.

Regards
Rushi

Member 14005734 22-Oct-18 4:06am

is this working correctly or not

R_D_K 12-May-11 2:00am

Tks rushijoshi

but i have another one problem

i want to display the total break time

user can take more than one break per day. So i want to calculate total break time for this what i want to do
in stop watch pass method is available

regards,
Dineshkumar R

Member 14005734 22-Oct-18 4:06am

s this working correctly or not