Click here to Skip to main content
12,953,700 members (45,918 online)
Click here to Skip to main content


231 bookmarked
Posted 9 Oct 2012

Creating Secure Trial Versions for .NET Applications - A Tutorial

, 16 Oct 2012 CPOL
Implement trial licensing model for your .NET applications with minimal costs
using System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using System.IO;

namespace SampleTrialAppCS
    class ClockManipulationDetector
        public static bool DetectClockManipulation(DateTime thresholdTime)
            DateTime adjustedThresholdTime = new DateTime(thresholdTime.Year, thresholdTime.Month, thresholdTime.Day, 23, 59, 59);

            EventLog eventLog = new System.Diagnostics.EventLog("system");

            foreach (EventLogEntry entry in eventLog.Entries)
                if (entry.TimeWritten > adjustedThresholdTime)
                    return true;

            return false;

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Ansel Reynard
United States United States
No Biography provided

You may also be interested in...

Permalink | Advertise | Privacy | Terms of Use | Mobile
Web02 | 2.8.170525.1 | Last Updated 16 Oct 2012
Article Copyright 2012 by Ansel Reynard
Everything else Copyright © CodeProject, 1999-2017
Layout: fixed | fluid