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Stopwatch Class

Note: This class is new in the .NET Framework version 2.0.

Provides a set of methods and properties that you can use to accurately measure elapsed time.

Namespace: System.Diagnostics
Assembly: System (in system.dll)

public class Stopwatch
public class Stopwatch
public class Stopwatch

A Stopwatch instance can measure elapsed time for one interval, or the total of elapsed time across multiple intervals. In a typical Stopwatch scenario, you call the Start method, then eventually call the Stop method, and then you check elapsed time using the Elapsed property.

A Stopwatch instance is either running or stopped; use IsRunning to determine the current state of a Stopwatch. Use Start to begin measuring elapsed time; use Stop to stop measuring elapsed time. Query the elapsed time value through the properties Elapsed, ElapsedMilliseconds, or ElapsedTicks. You can query the elapsed time properties while the instance is running or stopped. The elapsed time properties steadily increase while the Stopwatch is running; they remain constant when the instance is stopped.

By default, the elapsed time value of a Stopwatch instance equals the total of all measured time intervals. Each call to Start begins counting at the cumulative elapsed time; each call to Stop ends the current interval measurement and freezes the cumulative elapsed time value. Use the Reset method to clear the cumulative elapsed time in an existing Stopwatch instance.

The Stopwatch measures elapsed time by counting timer ticks in the underlying timer mechanism. If the installed hardware and operating system support a high-resolution performance counter, then the Stopwatch class uses that counter to measure elapsed time. Otherwise, the Stopwatch class uses the system timer to measure elapsed time. Use the Frequency and IsHighResolution fields to determine the precision and resolution of the Stopwatch timing implementation.

The Stopwatch class assists the manipulation of timing-related performance counters within managed code. Specifically, the Frequency field and GetTimestamp method can be used in place of the unmanaged Win32 APIs QueryPerformanceFrequency and QueryPerformanceCounter.

NoteNote

On a multiprocessor computer, it does not matter which processor the thread runs on. However, because of bugs in the BIOS or the Hardware Abstraction Layer (HAL), you can get different timing results on different processors. To specify processor affinity for a thread, use the ProcessThread.ProcessorAffinity method.

The following example uses the Stopwatch class to implement stopwatch operations in a Windows form application.

using System;
using System.Diagnostics;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Drawing2D;
  
namespace StopWatchSample
{    
    public class FormMain : System.Windows.Forms.Form
    {
        private Stopwatch stopWatch;
        private Boolean captureLap;

        public FormMain()
        {
            stopWatch = new Stopwatch();
            captureLap = false;

            InitializeComponent();
        }

        protected override void Dispose( bool disposing )
        {
            base.Dispose( disposing );
        }

        [STAThread]
        static void Main() 
        {
            Application.Run(new FormMain());
        }

        // Define event handlers for various form events.

        private void buttonStartStop_Click(System.Object sender, 
            System.EventArgs e)
        {
            // When the timer is stopped, this button event starts 
            // the timer.  When the timer is running, this button 
            // event stops the timer.
            if (stopWatch.IsRunning)
            {
                // Stop the timer; show the start and reset buttons.
                stopWatch.Stop();
                buttonStartStop.Text = "Start";
                buttonLapReset.Text = "Reset";
            }
            else 
            {
                // Start the timer; show the stop and lap buttons.
                stopWatch.Start();
                buttonStartStop.Text = "Stop";
                buttonLapReset.Text = "Lap";
                labelLap.Visible = false;
                labelLapPrompt.Visible = false;
            }
        }

        private void buttonLapReset_Click(System.Object sender, 
                                     System.EventArgs e)
        {
            // When the timer is stopped, this button event resets
            // the timer.  When the timer is running, this button  
            // event captures a lap time.

            if (buttonLapReset.Text == "Lap")
            {
                if (stopWatch.IsRunning)
                {
                    // Set the object state so that the next
                    // timer tick will display the lap time value.

                    captureLap = true;
                    labelLap.Visible = true;
                    labelLapPrompt.Visible = true;
                }
            }
            else 
            {
                // Reset the stopwatch and the displayed timer value.

                labelLap.Visible = false;
                labelLapPrompt.Visible = false;
                labelTime.Text = "00:00:00.00";
                buttonLapReset.Text = "Lap";
                stopWatch.Reset();
            }        
        }

        private void timerMain_Tick(System.Object sender, 
                                    System.EventArgs e)
        {
            // When the timer is running, update the displayed timer 
            // value for each tick event.

            if (stopWatch.IsRunning)
            {
                // Get the elapsed time as a TimeSpan value.
                TimeSpan ts = stopWatch.Elapsed;

                // Format and display the TimeSpan value.
                labelTime.Text = String.Format("{0:00}:{1:00}:{2:00}.{3:00}", 
                    ts.Hours, ts.Minutes, ts.Seconds, 
                    ts.Milliseconds/10);

                // If the user has just clicked the "Lap" button,
                // then capture the current time for the lap time.

                if (captureLap)
                {
                    labelLap.Text = labelTime.Text;
                    captureLap = false;
                }
            }
        }

        private void labelExit_Click(System.Object sender, 
            System.EventArgs e)
        {
            // Close the form when the user clicks the close button.
            this.Close();
        }

        private void labelTopLeft_Click(object sender, System.EventArgs e)
        {
            this.Location = new Point(0, 0);
        }

        private void labelBottomLeft_Click(object sender, System.EventArgs e)
        {
            this.Location = new Point(0, Screen.PrimaryScreen.WorkingArea.Height - this.Height);
        }

        private void labelTopRight_Click(object sender, System.EventArgs e)
        {
            this.Location = new Point(Screen.PrimaryScreen.WorkingArea.Width - this.Width, 0);
        }

        private void labelBottomRight_Click(object sender, System.EventArgs e)
        {
            this.Location = new Point(Screen.PrimaryScreen.WorkingArea.Width - this.Width, 
                                 Screen.PrimaryScreen.WorkingArea.Height - this.Height);
        }

        private void FormMain_Click(object sender, System.EventArgs e)
        {
            this.Location = new Point((Screen.PrimaryScreen.WorkingArea.Width - this.Width) / 2, 
                                 (Screen.PrimaryScreen.WorkingArea.Height - this.Height) / 2);
        }

        private void FormMain_Load(object sender, System.EventArgs e)
        {
            // Shape the viewer form with rounded edges.

            DrawForm();
            this.Location = new Point((Screen.PrimaryScreen.WorkingArea.Width - this.Width) / 2, 
                                 (Screen.PrimaryScreen.WorkingArea.Height - this.Height) / 2);

        }

        private void DrawForm()
        {
            // Shape the viewer form with rounded edges.
            GraphicsPath graphicsPath = new GraphicsPath();

            graphicsPath.AddArc(0, 0, 100, 100, 180, 90);
            graphicsPath.AddArc(100, 0, 100, 100, 270, 90);
            graphicsPath.AddArc(100, 100, 100, 100, 0, 90);
            graphicsPath.AddArc(0, 100, 100, 100, 90, 90);

            this.Region = new Region(graphicsPath);
        }

        // Define various form elements.

        private System.ComponentModel.Container components = null;

        private System.Windows.Forms.Label labelExit;
        private System.Windows.Forms.Label labelTime;
        private System.Windows.Forms.Timer timerMain;
        private System.Windows.Forms.Button buttonLapReset;
        private System.Windows.Forms.Button buttonStartStop;
        private System.Windows.Forms.Label labelLapPrompt;
        private System.Windows.Forms.Label labelTimePrompt;
        private System.Windows.Forms.Label labelLap;
        private System.Windows.Forms.Label labelBottomLeft;
        private System.Windows.Forms.Label labelBottomRight;
        private System.Windows.Forms.Label labelTopLeft;
        private System.Windows.Forms.Label labelTopRight;

        private void InitializeComponent()
        {
            this.SuspendLayout();            

            this.components = new System.ComponentModel.Container();
            this.labelExit = new System.Windows.Forms.Label();
            this.labelTime = new System.Windows.Forms.Label();
            this.buttonLapReset = new System.Windows.Forms.Button();
            this.timerMain = new System.Windows.Forms.Timer(this.components);
            this.labelLap = new System.Windows.Forms.Label();
            this.buttonStartStop = new System.Windows.Forms.Button();
            this.labelLapPrompt = new System.Windows.Forms.Label();
            this.labelTimePrompt = new System.Windows.Forms.Label();
            this.labelBottomLeft = new System.Windows.Forms.Label();
            this.labelBottomRight = new System.Windows.Forms.Label();
            this.labelTopLeft = new System.Windows.Forms.Label();
            this.labelTopRight = new System.Windows.Forms.Label();
        
            // labelExit
        
            this.labelExit.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.labelExit.ForeColor = System.Drawing.Color.Aqua;
            this.labelExit.Location = new System.Drawing.Point(160, 16);
            this.labelExit.Name = "labelExit";
            this.labelExit.Size = new System.Drawing.Size(20, 20);
            this.labelExit.TabIndex = 0;
            this.labelExit.Text = "x";
            this.labelExit.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
            this.labelExit.Click += new System.EventHandler(this.labelExit_Click);            
        
            // labelTime
        
            this.labelTime.Font = new System.Drawing.Font("Comic Sans MS", 18.0F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
            this.labelTime.ForeColor = System.Drawing.Color.Yellow;
            this.labelTime.Location = new System.Drawing.Point(-3, 56);
            this.labelTime.Name = "labelTime";
            this.labelTime.Size = new System.Drawing.Size(208, 32);
            this.labelTime.TabIndex = 1;
            this.labelTime.Text = "00:00:00.00";
        
            // buttonLapReset
        
            this.buttonLapReset.Font = new System.Drawing.Font("Comic Sans MS", 14.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
            this.buttonLapReset.ForeColor = System.Drawing.Color.Yellow;
            this.buttonLapReset.Location = new System.Drawing.Point(104, 160);
            this.buttonLapReset.Name = "buttonLapReset";
            this.buttonLapReset.Size = new System.Drawing.Size(72, 32);
            this.buttonLapReset.TabIndex = 4;
            this.buttonLapReset.Text = "Lap";
            this.buttonLapReset.Click += new System.EventHandler(this.buttonLapReset_Click);            
        
            // timerMain
        
            this.timerMain.Enabled = true;
            this.timerMain.Interval = 50;
            this.timerMain.Tick += new System.EventHandler(this.timerMain_Tick);            
        
            // labelLap
        
            this.labelLap.Font = new System.Drawing.Font("Comic Sans MS", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point);
            this.labelLap.ForeColor = System.Drawing.Color.Yellow;
            this.labelLap.Location = new System.Drawing.Point(0, 120);
            this.labelLap.Name = "labelLap";
            this.labelLap.Size = new System.Drawing.Size(200, 32);
            this.labelLap.TabIndex = 5;
            this.labelLap.Visible = false;

            // buttonStartStop
        
            this.buttonStartStop.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
            this.buttonStartStop.Font = new System.Drawing.Font("Comic Sans MS", 14.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point);
            this.buttonStartStop.ForeColor = System.Drawing.Color.Yellow;
            this.buttonStartStop.Location = new System.Drawing.Point(24, 160);
            this.buttonStartStop.Name = "buttonStartStop";
            this.buttonStartStop.Size = new System.Drawing.Size(72, 32);
            this.buttonStartStop.TabIndex = 2;
            this.buttonStartStop.Text = "Start";
            this.buttonStartStop.Click += new System.EventHandler(this.buttonStartStop_Click);            
        
            // labelLapPrompt
        
            this.labelLapPrompt.Font = new System.Drawing.Font("Comic Sans MS", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point);
            this.labelLapPrompt.ForeColor = System.Drawing.Color.Yellow;
            this.labelLapPrompt.Location = new System.Drawing.Point(8, 96);
            this.labelLapPrompt.Name = "labelLapPrompt";
            this.labelLapPrompt.Size = new System.Drawing.Size(56, 24);
            this.labelLapPrompt.TabIndex = 6;
            this.labelLapPrompt.Text = "Lap Time";
            this.labelLapPrompt.Visible = false;
        
            // labelTimePrompt
        
            this.labelTimePrompt.Font = new System.Drawing.Font("Comic Sans MS", 15.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point);
            this.labelTimePrompt.ForeColor = System.Drawing.Color.Yellow;
            this.labelTimePrompt.Location = new System.Drawing.Point(0, 24);
            this.labelTimePrompt.Name = "labelTimePrompt";
            this.labelTimePrompt.Size = new System.Drawing.Size(88, 24);
            this.labelTimePrompt.TabIndex = 7;
            this.labelTimePrompt.Text = "Time";
        
            // labelBottomLeft
        
            this.labelBottomLeft.BackColor = System.Drawing.Color.Black;
            this.labelBottomLeft.ForeColor = System.Drawing.Color.Black;
            this.labelBottomLeft.Location = new System.Drawing.Point(0, 176);
            this.labelBottomLeft.Name = "labelBottomLeft";
            this.labelBottomLeft.Size = new System.Drawing.Size(16, 16);
            this.labelBottomLeft.TabIndex = 8;
            this.labelBottomLeft.Click += new System.EventHandler(this.labelBottomLeft_Click);            
        
            // labelBottomRight
        
            this.labelBottomRight.BackColor = System.Drawing.Color.Black;
            this.labelBottomRight.ForeColor = System.Drawing.Color.Black;
            this.labelBottomRight.Location = new System.Drawing.Point(184, 176);
            this.labelBottomRight.Name = "labelBottomRight";
            this.labelBottomRight.Size = new System.Drawing.Size(16, 16);
            this.labelBottomRight.TabIndex = 9;
            this.labelBottomRight.Click += new System.EventHandler(this.labelBottomRight_Click);            
        
            // labelTopLeft
        
            this.labelTopLeft.BackColor = System.Drawing.Color.Black;
            this.labelTopLeft.ForeColor = System.Drawing.Color.Black;
            this.labelTopLeft.Location = new System.Drawing.Point(0, 8);
            this.labelTopLeft.Name = "labelTopLeft";
            this.labelTopLeft.Size = new System.Drawing.Size(16, 16);
            this.labelTopLeft.TabIndex = 10;
            this.labelTopLeft.Click += new System.EventHandler(this.labelTopLeft_Click);            
        
            // labelTopRight
        
            this.labelTopRight.BackColor = System.Drawing.Color.Black;
            this.labelTopRight.ForeColor = System.Drawing.Color.Black;
            this.labelTopRight.Location = new System.Drawing.Point(184, 8);
            this.labelTopRight.Name = "labelTopRight";
            this.labelTopRight.Size = new System.Drawing.Size(16, 16);
            this.labelTopRight.TabIndex = 11;
            this.labelTopRight.Click += new System.EventHandler(this.labelTopRight_Click);            

        
            // FormMain
           
            this.AutoScaleBaseSize = new System.Drawing.Size(9, 22);
            this.BackColor = System.Drawing.Color.Navy;
            this.ClientSize = new System.Drawing.Size(200, 200);
            this.Controls.Add(this.labelTopRight);
            this.Controls.Add(this.labelTopLeft);
            this.Controls.Add(this.labelBottomRight);
            this.Controls.Add(this.labelBottomLeft);
            this.Controls.Add(this.labelTimePrompt);
            this.Controls.Add(this.labelLapPrompt);
            this.Controls.Add(this.labelLap);
            this.Controls.Add(this.buttonLapReset);
            this.Controls.Add(this.buttonStartStop);
            this.Controls.Add(this.labelTime);
            this.Controls.Add(this.labelExit);
            this.Font = new System.Drawing.Font("Microsoft Sans Serif", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
            this.Name = "FormMain";
            this.Text = "StopWatch Sample";
            this.TopMost = true;
            this.Load += new System.EventHandler(this.FormMain_Load);            

            this.ResumeLayout(false);
        }
    }
}

import System.*;
import System.Diagnostics.*;
import System.Windows.Forms.*;
import System.Drawing.*;
import System.Drawing.Drawing2D.*;

public class FormMain extends System.Windows.Forms.Form
{
    private Stopwatch stopWatch;
    private Boolean captureLap;

    public FormMain()
    {
        stopWatch = new Stopwatch();
        captureLap = new Boolean(false);

        InitializeComponent();
    } //FormMain

    protected void Dispose(boolean disposing)
    {
        super.Dispose(disposing);
    } //Dispose

    /** @attribute STAThread()
     */
    public static void main(String[] args)
    {
        Application.Run(new FormMain());
    } //main

    // Define event handlers for various form events.
    private void buttonStartStop_Click(Object sender, System.EventArgs e)
    {
        // When the timer is stopped, this button event starts 
        // the timer.  When the timer is running, this button 
        // event stops the timer.
        if (stopWatch.get_IsRunning()) {
            // Stop the timer; show the start and reset buttons.
            stopWatch.Stop();
            buttonStartStop.set_Text("Start");
            buttonLapReset.set_Text("Reset");
        }
        else {
            // Start the timer; show the stop and lap buttons.
            stopWatch.Start();
            buttonStartStop.set_Text("Stop");
            buttonLapReset.set_Text("Lap");
            labelLap.set_Visible(false);
            labelLapPrompt.set_Visible(false);
        }
    } //buttonStartStop_Click
    
    private void buttonLapReset_Click(Object sender, System.EventArgs e)
    {
        // When the timer is stopped, this button event resets
        // the timer.  When the timer is running, this button  
        // event captures a lap time.
        if (buttonLapReset.get_Text().Equals("Lap")) {
            if (stopWatch.get_IsRunning()) {
                // Set the object state so that the next
                // timer tick will display the lap time value.
                captureLap = new Boolean(true);
                labelLap.set_Visible(true);
                labelLapPrompt.set_Visible(true);
            }
        }
        else {
            // Reset the stopwatch and the displayed timer value.
            labelLap.set_Visible(false);
            labelLapPrompt.set_Visible(false);
            labelTime.set_Text("00:00:00.00");
            buttonLapReset.set_Text("Lap");
            stopWatch.Reset();
        } 
    } //buttonLapReset_Click

    private void timerMain_Tick(Object sender, System.EventArgs e)
    {
        // When the timer is running, update the displayed timer 
        // value for each tick event.
        if (stopWatch.get_IsRunning()) {
            // Get the elapsed time as a TimeSpan value.
            TimeSpan ts = stopWatch.get_Elapsed();
            // Format and display the TimeSpan value.
            labelTime.set_Text(((System.Int32)ts.get_Hours()).ToString("00") 
                + ":" + ((System.Int32)ts.get_Minutes()).ToString("00") 
                + ":" + ((System.Int32)ts.get_Seconds()).ToString("00") 
                + "." + ((System.Int32)(ts.get_Milliseconds() / 10)).
                ToString("00"));
            // If the user has just clicked the "Lap" button,
            // then capture the current time for the lap time.
            if (System.Convert.ToBoolean(captureLap)) {
                labelLap.set_Text(labelTime.get_Text());
                captureLap = new Boolean(false);
            }
        }
    } //timerMain_Tick

    private void labelExit_Click(Object sender, System.EventArgs e)
    {
        // Close the form when the user clicks the close button.
        this.Close();
    } //labelExit_Click

    private void labelTopLeft_Click(Object sender, System.EventArgs e)
    {
        this.set_Location(new Point(0, 0));
    } //labelTopLeft_Click

    private void labelBottomLeft_Click(Object sender, System.EventArgs e)
    {
        this.set_Location(new Point(0, Screen.get_PrimaryScreen().
            get_WorkingArea().get_Height() - this.get_Height()));
    } //labelBottomLeft_Click

    private void labelTopRight_Click(Object sender, System.EventArgs e)
    {
        this.set_Location(new Point(Screen.get_PrimaryScreen().
            get_WorkingArea().get_Width() - this.get_Width(), 0));
    } //labelTopRight_Click

    private void labelBottomRight_Click(Object sender, System.EventArgs e)
    {
        this.set_Location(new Point(Screen.get_PrimaryScreen().
            get_WorkingArea().get_Width() - this.get_Width(), 
            Screen.get_PrimaryScreen().get_WorkingArea().get_Height() 
            - this.get_Height()));
    } //labelBottomRight_Click

    private void FormMain_Click(Object sender, System.EventArgs e)
    {
        this.set_Location(new Point((Screen.get_PrimaryScreen().
            get_WorkingArea().get_Width() - this.get_Width()) / 2, 
            (Screen.get_PrimaryScreen().get_WorkingArea().get_Height() 
            - this.get_Height()) / 2));
    } //FormMain_Click

    private void FormMain_Load(Object sender, System.EventArgs e)
    {
        // Shape the viewer form with rounded edges.
        DrawForm();
        this.set_Location(new Point((Screen.get_PrimaryScreen().
            get_WorkingArea().get_Width() - this.get_Width()) / 2, 
            (Screen.get_PrimaryScreen().get_WorkingArea().get_Height() 
            - this.get_Height()) / 2));
    } //FormMain_Load

    private void DrawForm()
    {
        // Shape the viewer form with rounded edges.
        GraphicsPath graphicsPath = new GraphicsPath();

        graphicsPath.AddArc(0, 0, 100, 100, 180, 90);
        graphicsPath.AddArc(100, 0, 100, 100, 270, 90);
        graphicsPath.AddArc(100, 100, 100, 100, 0, 90);
        graphicsPath.AddArc(0, 100, 100, 100, 90, 90);

        this.set_Region(new Region(graphicsPath));
    } //DrawForm

    // Define various form elements.
    private System.ComponentModel.Container components = null;
    private System.Windows.Forms.Label labelExit;
    private System.Windows.Forms.Label labelTime;
    private System.Windows.Forms.Timer timerMain;
    private System.Windows.Forms.Button buttonLapReset;
    private System.Windows.Forms.Button buttonStartStop;
    private System.Windows.Forms.Label labelLapPrompt;
    private System.Windows.Forms.Label labelTimePrompt;
    private System.Windows.Forms.Label labelLap;
    private System.Windows.Forms.Label labelBottomLeft;
    private System.Windows.Forms.Label labelBottomRight;
    private System.Windows.Forms.Label labelTopLeft;
    private System.Windows.Forms.Label labelTopRight;

    private void InitializeComponent()
    {
        this.SuspendLayout();

        this.components = new System.ComponentModel.Container();
        this.labelExit = new System.Windows.Forms.Label();
        this.labelTime = new System.Windows.Forms.Label();
        this.buttonLapReset = new System.Windows.Forms.Button();
        this.timerMain = new System.Windows.Forms.Timer(this.components);
        this.labelLap = new System.Windows.Forms.Label();
        this.buttonStartStop = new System.Windows.Forms.Button();
        this.labelLapPrompt = new System.Windows.Forms.Label();
        this.labelTimePrompt = new System.Windows.Forms.Label();
        this.labelBottomLeft = new System.Windows.Forms.Label();
        this.labelBottomRight = new System.Windows.Forms.Label();
        this.labelTopLeft = new System.Windows.Forms.Label();
        this.labelTopRight = new System.Windows.Forms.Label();
        // labelExit
        this.labelExit.set_BorderStyle(
            System.Windows.Forms.BorderStyle.Fixed3D);
        this.labelExit.set_ForeColor(System.Drawing.Color.get_Aqua());
        this.labelExit.set_Location(new System.Drawing.Point(160, 16));
        this.labelExit.set_Name("labelExit");
        this.labelExit.set_Size(new System.Drawing.Size(20, 20));
        this.labelExit.set_TabIndex(0);
        this.labelExit.set_Text("x");
        this.labelExit.set_TextAlign(
            System.Drawing.ContentAlignment.BottomCenter);
        this.labelExit.add_Click(new System.EventHandler(this.labelExit_Click));
        // labelTime
        this.labelTime.set_Font(new System.Drawing.Font("Comic Sans MS", 18, 
            System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point));
        this.labelTime.set_ForeColor(System.Drawing.Color.get_Yellow());
        this.labelTime.set_Location(new System.Drawing.Point(-3, 56));
        this.labelTime.set_Name("labelTime");
        this.labelTime.set_Size(new System.Drawing.Size(208, 32));
        this.labelTime.set_TabIndex(1);
        this.labelTime.set_Text("00:00:00.00");
        // buttonLapReset
        this.buttonLapReset.set_Font(new System.Drawing.Font("Comic Sans MS", 
            14.25f, System.Drawing.FontStyle.Bold, 
            System.Drawing.GraphicsUnit.Point));
        this.buttonLapReset.set_ForeColor(System.Drawing.Color.get_Yellow());
        this.buttonLapReset.set_Location(new System.Drawing.Point(104, 160));
        this.buttonLapReset.set_Name("buttonLapReset");
        this.buttonLapReset.set_Size(new System.Drawing.Size(72, 32));
        this.buttonLapReset.set_TabIndex(4);
        this.buttonLapReset.set_Text("Lap");
        this.buttonLapReset.add_Click(new System.EventHandler(
            this.buttonLapReset_Click));
        // timerMain
        this.timerMain.set_Enabled(true);
        this.timerMain.set_Interval(50);
        this.timerMain.add_Tick(new System.EventHandler(this.timerMain_Tick));
        // labelLap
        this.labelLap.set_Font(new System.Drawing.Font("Comic Sans MS", 
            (float)14.25, System.Drawing.FontStyle.Regular, 
            System.Drawing.GraphicsUnit.Point));
        this.labelLap.set_ForeColor(System.Drawing.Color.get_Yellow());
        this.labelLap.set_Location(new System.Drawing.Point(0, 120));
        this.labelLap.set_Name("labelLap");
        this.labelLap.set_Size(new System.Drawing.Size(200, 32));
        this.labelLap.set_TabIndex(5);
        this.labelLap.set_Visible(false);
        // buttonStartStop
        this.buttonStartStop.set_FlatStyle(System.Windows.Forms.FlatStyle.Flat);
        this.buttonStartStop.set_Font(new System.Drawing.Font("Comic Sans MS",
            (float)14.25, System.Drawing.FontStyle.Bold, 
            System.Drawing.GraphicsUnit.Point));
        this.buttonStartStop.set_ForeColor(System.Drawing.Color.get_Yellow());
        this.buttonStartStop.set_Location(new System.Drawing.Point(24, 160));
        this.buttonStartStop.set_Name("buttonStartStop");
        this.buttonStartStop.set_Size(new System.Drawing.Size(72, 32));
        this.buttonStartStop.set_TabIndex(2);
        this.buttonStartStop.set_Text("Start");
        this.buttonStartStop.add_Click(new System.EventHandler(
            this.buttonStartStop_Click));
        // labelLapPrompt
        this.labelLapPrompt.set_Font(new System.Drawing.Font("Comic Sans MS", 
            (float)14.25, System.Drawing.FontStyle.Regular, 
            System.Drawing.GraphicsUnit.Point));
        this.labelLapPrompt.set_ForeColor(System.Drawing.Color.get_Yellow());
        this.labelLapPrompt.set_Location(new System.Drawing.Point(8, 96));
        this.labelLapPrompt.set_Name("labelLapPrompt");
        this.labelLapPrompt.set_Size(new System.Drawing.Size(56, 24));
        this.labelLapPrompt.set_TabIndex(6);
        this.labelLapPrompt.set_Text("Lap Time");
        this.labelLapPrompt.set_Visible(false);
        // labelTimePrompt
        this.labelTimePrompt.set_Font(new System.Drawing.Font("Comic Sans MS", 
            (float)15.75, System.Drawing.FontStyle.Regular, 
            System.Drawing.GraphicsUnit.Point));
        this.labelTimePrompt.set_ForeColor(System.Drawing.Color.get_Yellow());
        this.labelTimePrompt.set_Location(new System.Drawing.Point(0, 24));
        this.labelTimePrompt.set_Name("labelTimePrompt");
        this.labelTimePrompt.set_Size(new System.Drawing.Size(88, 24));
        this.labelTimePrompt.set_TabIndex(7);
        this.labelTimePrompt.set_Text("Time");
        // labelBottomLeft
        this.labelBottomLeft.set_BackColor(System.Drawing.Color.get_Black());
        this.labelBottomLeft.set_ForeColor(System.Drawing.Color.get_Black());
        this.labelBottomLeft.set_Location(new System.Drawing.Point(0, 176));
        this.labelBottomLeft.set_Name("labelBottomLeft");
        this.labelBottomLeft.set_Size(new System.Drawing.Size(16, 16));
        this.labelBottomLeft.set_TabIndex(8);
        this.labelBottomLeft.add_Click(new System.EventHandler(
            this.labelBottomLeft_Click));
        // labelBottomRight
        this.labelBottomRight.set_BackColor(System.Drawing.Color.get_Black());
        this.labelBottomRight.set_ForeColor(System.Drawing.Color.get_Black());
        this.labelBottomRight.set_Location(new System.Drawing.Point(184, 176));
        this.labelBottomRight.set_Name("labelBottomRight");
        this.labelBottomRight.set_Size(new System.Drawing.Size(16, 16));
        this.labelBottomRight.set_TabIndex(9);
        this.labelBottomRight.add_Click(new System.EventHandler(
            this.labelBottomRight_Click));
        // labelTopLeft
        this.labelTopLeft.set_BackColor(System.Drawing.Color.get_Black());
        this.labelTopLeft.set_ForeColor(System.Drawing.Color.get_Black());
        this.labelTopLeft.set_Location(new System.Drawing.Point(0, 8));
        this.labelTopLeft.set_Name("labelTopLeft");
        this.labelTopLeft.set_Size(new System.Drawing.Size(16, 16));
        this.labelTopLeft.set_TabIndex(10);
        this.labelTopLeft.add_Click(new System.EventHandler(
            this.labelTopLeft_Click));
        // labelTopRight
        this.labelTopRight.set_BackColor(System.Drawing.Color.get_Black());
        this.labelTopRight.set_ForeColor(System.Drawing.Color.get_Black());
        this.labelTopRight.set_Location(new System.Drawing.Point(184, 8));
        this.labelTopRight.set_Name("labelTopRight");
        this.labelTopRight.set_Size(new System.Drawing.Size(16, 16));
        this.labelTopRight.set_TabIndex(11);
        this.labelTopRight.add_Click(new System.EventHandler(
            this.labelTopRight_Click));
        // FormMain
        this.set_AutoScaleBaseSize(new System.Drawing.Size(9, 22));
        this.set_BackColor(System.Drawing.Color.get_Navy());
        this.set_ClientSize(new System.Drawing.Size(200, 200));
        this.get_Controls().Add(this.labelTopRight);
        this.get_Controls().Add(this.labelTopLeft);
        this.get_Controls().Add(this.labelBottomRight);
        this.get_Controls().Add(this.labelBottomLeft);
        this.get_Controls().Add(this.labelTimePrompt);
        this.get_Controls().Add(this.labelLapPrompt);
        this.get_Controls().Add(this.labelLap);
        this.get_Controls().Add(this.buttonLapReset);
        this.get_Controls().Add(this.buttonStartStop);
        this.get_Controls().Add(this.labelTime);
        this.get_Controls().Add(this.labelExit);
        this.set_Font(new System.Drawing.Font("Microsoft Sans Serif", 
            (float)14.25, System.Drawing.FontStyle.Regular, 
            System.Drawing.GraphicsUnit.Point));
        this.set_FormBorderStyle(System.Windows.Forms.FormBorderStyle.None);
        this.set_Name("FormMain");
        this.set_Text("StopWatch Sample");
        this.set_TopMost(true);
        this.add_Load(new System.EventHandler(this.FormMain_Load));

        this.ResumeLayout(false);
    } //InitializeComponent
} //FormMain

System.Object
  System.Diagnostics.Stopwatch

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

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