1001 نکته در سی شارپ

[sinpin]

representation of the amount of time the computer has been on since the OS started.

public string getUptime()

{

    String strResult = String.Empty;

    strResult += Convert.ToString(Environment.TickCount / 86400000) + " days, ";

    strResult += Convert.ToString(Environment.TickCount / 3600000 % 24) + " hours, ";

    strResult += Convert.ToString(Environment.TickCount / 120000 % 60) + " minutes, ";

    strResult += Convert.ToString(Environment.TickCount / 1000 % 60) + " seconds.";

    return strResult;

}

منبع : http://www.dreamincode.net/code/snippet1555.htm