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Environment.TickCount Property

Gets the number of milliseconds elapsed since the system started.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

public static int TickCount { get; }
/** @property */
public static int get_TickCount ()

public static function get TickCount () : int

Property Value

A 32-bit signed integer containing the amount of time in milliseconds that has passed since the last time the computer was started.

The value of this property is derived from the system timer and is stored as a 32-bit signed integer. Consequently, if the system runs continuously, TickCount will increment from zero to Int32.MaxValue for approximately 24.9 days, then jump to Int32.MinValue, which is a negative number, then increment back to zero during the next 24.9 days.

The resolution of the TickCount property cannot be less than 500 milliseconds.

TickCount is different from the Ticks property, which is the number of 100-nanosecond intervals that have elapsed since 1/1/0001, 12:00am.

Use the DateTime.Now property to obtain the current local date and time on this computer.

The following code example demonstrates how to retrieve the positive range of values returned by the TickCount property. The TickCount property cycles between Int32.MinValue, which is a negative number, and Int32.MaxValue once every 49.8 days. This code sample removes the sign bit to yield a nonnegative number that cycles between zero and MaxValue once every 24.9 days.

// Sample for the Environment.TickCount property.

// TickCount cycles between Int32.MinValue, which is a negative 
// number, and Int32.MaxValue once every 49.8 days. This sample
// removes the sign bit to yield a nonnegative number that cycles 
// between zero and Int32.MaxValue once every 24.9 days.

using System;

class Sample 
{
    public static void Main() 
    {
    int result = Environment.TickCount & Int32.MaxValue;
    Console.WriteLine("TickCount: {0}", result);
    }
}
/*
This example produces the following results:

TickCount: 101931139
*/

// Sample for the Environment.TickCount property

import System.*;

class Sample
{
    public static void main(String[] args)
    {
        Console.WriteLine();
        Console.WriteLine("TickCount: {0}", 
            System.Convert.ToString(Environment.get_TickCount()));
    } //main
} //Sample

/*
This example produces the following results:

TickCount: 17995355
*/

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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