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Great Reads

NTP/SNTP v4/v3 Server/Client C++

by JadBenAutho

Efficient and standalone library for NTP server/client utilizing pure C++

Partition Tables Explained

by Elias Bachaalany

Format of the partition table accompanied with a GUI demonstration tool

Understanding (all) JavaScript Module Formats and Tools

by Dixin Yan

A one-stop tutorial of all mainstream technologies for JavaScript modules.

Tracing and Logging Technologies on Windows. Part 1 - Simple Ways Providing Information for Tracing

by Maxim Kartavenkov

The series of articles covers most aspects of logging and tracing mechanisms which can be embedded into your application. It discusses simple ways of tracing and also new tracing technologies which were involved in Windows 10.

Latest Articles

NTP/SNTP v4/v3 Server/Client C++

by JadBenAutho

Efficient and standalone library for NTP server/client utilizing pure C++

Reboot or Not to Reboot?

by Maxim Kartavenkov

This is a guide on how to configure your application, service or driver to handle appearing the new devices or device removal avoiding reboot request.

Tracing and Logging Technologies on Windows. Part 4 - Saving Log

by Maxim Kartavenkov

Discussion of how to organize saving application trace helper information.

How to "Monitor Data Changes in SQL Server Tables with Triggers"

by zidane168

Use SQL triggers to keep track of the changes made to your data

All Articles

System

Interview Question

24 Jan 2010 by #realJSOP

They're asking you what experience you have with check-in/check-out systems. If you don't know what that is, then you have no experience with it.Like jimanuel said - tell them you don't know what it is, and see if they keep interviewing you.

Laptop restart problem

6 Jun 2010 by #realJSOP

Try this:Try getting into the BIOS and set the laptop boot order to boot from the DVD drive first, hard drive second. After you've done that, try booting your rescue DVD so you can "repair" your Windows installation.

System Requirements for .NET intranet application

21 Jan 2011 by #realJSOP

At a glance, you need:0) Visual Studio 2010 Profession1) SQL Server 2008 (although you might be able to get away with using SQL Server 2008 Express)2) Windows Server 20083) At least one server machine (there are many vendors) - you really should have the database server and the...

How we develop an operating system

16 Jun 2011 by #realJSOP

I think you should find something else for a school project that's within your skill level. Writing an OS is not a trivial task, and unless you come up with a killer file system, it won't be all that and a bag of chips.

how to get default %temp% value

25 Jul 2011 by #realJSOP

The default name is always "c:\Windows\TEMP". (for NT, it was C:\WINNT\TEMP). Keep in mind that the only real variable here is the path to the Windows folder (if the user installed it somewhere otgher than drive C:.

Get User Image for Windows Login user (Using C#)

25 Mar 2012 by #realJSOP

For Vista and later, the image is located in C:\Users\UserName\AppData\Local\Temp\[UserName].bmp

What is the meaning for this?

7 Jun 2021 by 15160877

I have used the code WebDriver driver=new ChromeDriver(); It throws the error java.lang.IllegalStateException: The path to the driver executable must be set by the webdriver.chrome.driver system property; It's because I didn't set the...

Why it is not working

15 Jun 2021 by 15160877

I have been trying to set the class path programmatically using System.setProperty("java.class.path",newPath). Though I set the class path, it throws an error. This is my code: A.java class A { public static void main(String[] args) {...

Class file not loading

21 Jun 2021 by 15160877

A.java is in C directory and B.java is in D directory. I am trying to load B.class in runtime using the following code: import java.io.*; import java.lang.reflect.Method; import java.util.*; import java.net.*; class A {...

How to run commands on cmd prompt using cpp

10 Feb 2016 by 7prasannaReddy

All I need is to open a cmd prompt and pass commands to cmd prompt and run them.For example 1.open cmd2.pass a command to "change directory"3.pass a command to open a file.What I have tried:I've tried as below:#include int main(){ std::cout

Asset code genrating steps

28 Feb 2012 by Abdul2011

Hi Teams,I new to coding and i am looking for a code that can save my time in taking complete asset of office system ranging to 100 PC.I know i get third tools on pay able basis but i am missing some thing it.I am looking for a complete PC audit(System info,System Changes,Patch...

making of operating system

4 Jun 2011 by Abhinav S

Doing a search on the internet will give you a number of links.I found this[^] interesting for a start.But remember, there is tons more to do.

Operating System Development

19 Jan 2013 by Abhinav S

Start with concepts mentioned here -http://www.osnews.com/story/2691[^]http://himmele.blogspot.in/2011/07/build-your-own-operating-system.html[^]http://www.techrepublic.com/blog/european-technology/build-your-own-os-using-the-raspberry-pi/1167[^]

Interview Question

24 Jan 2010 by Abhishek Sur

:laugh: :laugh: Actually if you have ever used Team Foundation Server / Visual Source Safe / SVN etc you would have gotten this answer yourself.Actually while we develop a project in team, each individual accesses a central codebase. Now if i need to change a particular file, I would...

How do i...solve the error shown in terminal which is n = "+".join(n) .typeerror: can only join an iterable

9 Jul 2023 by Aditya Jha 2023

# import re from sys import path from tkinter import* from tkinter import ttk from PIL import Image,ImageTk import os import mysql.connector import cv2 import numpy as np from tkinter import messagebox from time import strftime from datetime...

Which books are best for learning below computer science subjects?

18 Dec 2016 by Afzaal Ahmad Zeeshan

There are thousand books, thousand reviews and thousand rating. Each evaluating gibberish to 4.5. How can you evaluate a good book based on personal reviews? I might enjoy reading a book that you hate. So, basically start by understanding the concepts and then keep reading one book and...

get a error msg (generally error)

19 Aug 2012 by Ali_100

Hi,, I m getting the following msg when i go in IE tools & then click Internet option,at click on internet options i get "This operation has been canceled due to restrictions in effect on this computer. Please contact your system administrator."How could I resolved...

Overriding Ctrl+v window in Windows using C#

4 Oct 2012 by Ambesha

Freind, Please either use the window hook key event or override the existing implementation of Ctrl+V and customize your code accordingly on keydown event. please let me know if you want any thing else.Friend, please find the code for same also use the true block to generate your custom...

Interview Question

24 Jan 2010 by Amgad Fahmi

did u read what i wrote ? cause i said i had the interview and i want to know the answer may be will be something useful we can use it later

Interview Question

24 Jan 2010 by Amgad Fahmi

Thnx for your answer and i already worked with source safe and svn (by the way svn doesnt work in same way like source safe do, by default in svn 2 developers can modify the same file in same time )and i know how they are working but i am sure this is not what he meant.i was googling about...

Interview Question

24 Jan 2010 by Amgad Fahmi

Thnx John and really your knowledge forces me to respect what you said , but i mentioned before that i already had the interview and i just want to know the answer , is there something wrong when u hear about something you don't know you try to figure out what is it ? i think this one of the...

Operating System Development

20 Jan 2013 by Andreas Gieriet

You talk about a file system, not an OS. The file system is just a part of an OS (please note that an OS does not necessarily need to have a file system - see many embedded system OS).Implementing a file system is kind of useless (you have no benefit in re-inventing your own or...

Windows Software Licensing Data and Information in a Nutshell

2 Jul 2015 by Andrew Rober

Windows software licensing data and information in a nutshell

An Integrated Mobile Application to Control and Management Gym Personal Activities with PHP Ecosystem and React Native

5 Oct 2021 by André Marcos (Advisor), Renan Cardoso

Developing a solution to help user and personal trainer, to control and to track personal activities in a gym supported by a simple and integrated app with PHP ecosystem and React Native and Postgre database.

Version Control: Effective Use, Issues and Thoughts, from a Gamedev Perspective

10 Oct 2016 by Ashley Davis

A look at version control from the game developers perspective

Monitoring Registry Change

14 Jul 2010 by AshwinAtri

After installing an application many registry keys are getting created. Upon using the application it changes the values of these keys.Now, how do i track these changes ? Practically there are many keys and manually not possible..,Please can anybody guide me how to track registry changes...

11 Oct 2013 by ASP.NET Community

Here are a few good tutorial articles that provide a good conceptual overview of how the new membership and role management system works. Check out

11 Oct 2013 by ASP.NET Community

A Web service is defined by the W3C as "a software system designed to support interoperable Machine to Machine interaction over a network." Web

machine-learning

Adapter

11 Oct 2013 by ASP.NET Community

Adapter PatternThe gang of four definition is "Convert the interface of a class into another interface clients expect. Adpater lets the classes

Calendar Extender

11 Oct 2013 by ASP.NET Community

The AJAX Control Toolkit has a CalenderExtender extender control that pops up a calendar whenever the user clicks on the target control, or a popup

CalendarExtender

How to Send Mail with Error Message Details

11 Oct 2013 by ASP.NET Community

How to Send Mail with Error Message DetailsSometimes need to handle error and send it to technical support to handle error and send the solution to

AjaxControlToolkit Version Problem

11 Oct 2013 by ASP.NET Community

If you have more than one version of AJAX Tool Kit in your System , there might be problem while developing an AJAX based pages , Error

How I write a code for decrypting the code after I encrypt it by using 16 rounds of DES using C#

5 Jan 2017 by Ayodeji Oluwatomiwo

check this article Encrypt and Decrypt Data with C#https://www.codeproject.com/articles/14150/encrypt-and-decrypt-data-with-c

Sorting List using DataTable vs. Linq vs. Tuple

9 Feb 2015 by Bhis

Various ways to sort list and compare results

Detect computer restart or lack of

20 Jun 2010 by bickelk_90

I'm writing a program right now which requires a full system restart before certain functionality can be used. I have looked on Google and so far the best way that I have found to detect a system restart/or lack of, is to use the Registry key RunOnce to add another key as an indication, but this...

Using Gmail Account to Send Emails With Attachment

8 Apr 2011 by BillHudson

Man, that works great! I just converted it to VB.NET and also showed the Imports/Using that was needed, thanks to David's alternate. This was just what I was looking for, Thanks Abdur.Imports System.NetImports System.Net.MailPublic Class frmMain Private Sub frmMain_Load(sender As...

Where to use use which color system (Custom colors,Web colors, System colors)

28 Sep 2012 by BillWoodruff

Custom and Web colors just translate to numeric values in RGB space, the Web colors are named for convenience by MicroSoft: they should look the same everywhere: but, they may not: my monitor may make your purple look rosy :)System Colors means that color used will be based on the user's...

Restoring win7 system image from USB hard disk

29 Jun 2011 by Brian C Hart

I bought a new dev laptop and I am wanting to transfer the complete environment (files, programs, OS everything) to the new computer, completely wiping out the default layout of the new computer's hard drive in the process and replacing it with everything from the old system.Both systems are...

Printing under the system account - Windows Server 2012

14 Nov 2013 by btompkin

Hello,I am attempting to run an application under a windows service that prints a document using the system account. To do this I follow the following steps using C# and the win32 API. WTSGetActiveConsoleSessionID - to get the current console session to run the print application in. ...

How to find out if there are any keyboard hooks already in place?

19 Jan 2010 by Buzzby

If you want to see if any hooks have been set via SetWindowsHook() what's the best way to do it?From Keyboard Spy: implementation and counter measures[^] there is a useful routine, but is it optimal?It has the EnumModules() routine, but I was wondering if anyone has come up with a more...

Using Gmail Account to Send Emails With Attachment

5 Apr 2011 by charles henington

public class MailClass { public static void CreateMailAddresses(string sender, string reciever, out MailAddress mailfrom, out MailAddress mailto) { MailAddress Mailfrom = new MailAddress(sender); MailAddress Mailto = new...

Using Gmail Account to Send Emails With Attachment

18 Apr 2011 by charles henington

Sending mail with attachmentspublic partial class Form1 : Form { public Form1() { InitializeComponent(); } public class MailClass : List { public void CreateMailAddresses(string sender, string reciever, out...

Why it is not working

15 Jun 2021 by CHill60

If class B is in another file then you need to import it. Follow the instructions here - Calling a class in another file[^]

Banner Management System

21 May 2010 by Christian Graus

This has to be the easiest part of your task. Each user of the ads puts a different value in the query string, like refid=codeproject for example. Then the ad site reads it off the URL.

making of operating system

4 Jun 2011 by Christian Graus

Probably C or C++. That's as much of an answer as you can expect to such a broad question in a forum reply.

How we develop an operating system

16 Jun 2011 by Christian Graus

Utterly hilarious, if a little impressive in the delusions of grandeur. No person can write a useful OS by themselves, not today. It's sure as hell not a beginner project, or something that anyone sufficiently inexperienced to ask that question, should be attempting.

E-Commerce transaction system

7 Aug 2011 by Christian Graus

It usually works because a programmer wrote code to tell it what to do.

Is there Course Management System for ASP.NET?

18 Jul 2012 by Christian Graus

A course is content. Yes, you can get a CMS and configure it to make the content that it manages, course information. This is a programming site and this is not a programming question.

SQL question on database

15 Dec 2012 by Christian Graus

Stop posting your (simple) SQL home work here. Do it yourself.

I need help for a server hardware configuration

24 Oct 2013 by Corporal Agarn

I would suggest not putting both on one.

web_development

Number System Conversion

2 Sep 2010 by CPallini

See, for instance, http://en.wikipedia.org/wiki/Computer_numbering_format[^]. :)

System Side - About Assembler, compiler

2 Sep 2010 by CPallini

I suggest you to read the famous Dragon Book[^] about compilers.You may also find tons of free material on the web (there is, for instance, the excellent Wirth's "Compiler Construction (PDF)"[^], or the Crenshaw's online book "Let's Build a Compiler"[^], with his 'pragmatic' approach).As...

making of operating system

4 Jun 2011 by CPallini

Such an argument deserves more than a university course, here we can only give you some pointers (this is an hint on the development language).For instance you may consider the articles series of 0x3c0: "Beginning Operating System Development"[^].As about the code, you know, Linux is open...

i need code for this

30 Nov 2012 by CPallini

If you are using C++ with Windows API then check out this documentation page: "Getting Started with Winsock (Windows)"[^].

How to build my own Operating system ?.

2 Jul 2013 by CPallini

Here at CodeProject we have even this: article series by 0x3c0[^].

How is a program executed inside the computer hardware when we execute a program

11 Aug 2014 by CPallini

See, for instance, "Instruction Execution >> Instruction Execution Cycle"[^].

Has linux message structure like windows?

24 Nov 2014 by CPallini

Short answer: no, Linux has not the same message infrastructure Windows provides. On the other hand, Linux does provide many IPC facilities.

Write a shell script code

5 May 2022 by CPallini

You have to write the script. That said, for your script you need to know how to: Detect an empty variable Check if the file exists Use the wc Linux command Google is awaiting for you...

Get User Image for Windows Login user (Using C#)

25 Mar 2012 by cpquest

Hi all,For my Lan Messenger i like to display the user image. The image should be the Windows current Login user image.I got some link which say that the image of the current login user image will be available in this path C:\Users\\AppData\Local\Temp\.bmp. But i dont see that the LAN...

Overriding Ctrl+v window in Windows using C#

27 Sep 2012 by cpquest

Hi,i like to introduce a new feature in my machine that i need to override the Copy progress UI (Copy Window) in Windows 7. The idea iswhen i hit Ctrl+V in windows i need to override that command and execute my window instead of windows regular copy progress UI.

Virtual Screenshot Manager

7 Jun 2013 by csanuragjain

Captures, searches, and manages all your screenshots in one place.

Backup of MS SQL Database with Disk Space Check

31 May 2016 by DataBytzAI

How to ensure there is sufficient disk-space for SQL backup before you run a backup!

C# execute system command doesn't work correctly

21 Jul 2013 by Dave Kreskowiak

First, Explorer.exe is one of those process that you DO NOT SCREW WITH.The command line to launch it is "explorer.exe", not "CMD /C explorer.exe /F".The /F switch is not valid in Explorer. It, or any other invalid switch, will force Explorer to open a single window opened to MyDocuments...

How to make digital clock in C# without timer

24 Jun 2017 by Dave Kreskowiak

Well, yes. But, a Timer is the easiest way to go. If you code is "slow", not using a Timer isn't going to fix anything. The problem isn't with your Timer but with something else in your code. Start with profiling your code to see where the bottlenecks are.

How do I run a GUI program on a windows 10 login interface?

28 Mar 2018 by Dave Kreskowiak

You don't. It's a MASSIVE security risk. What you can do is, very carefully, write a Credential Provider[^].

How do I write a program to load on boot

27 Jan 2019 by Dave Kreskowiak

If you're talking about running code before Windows even starts, Google for "how to write a bootloader". Warning, this is NOT easy and NOT easy to get working. Remember, you don't have a runtime nor an O/S to handle stuff for you, so you have to write EVERYTHING yourself.

What is the meaning for this?

28 May 2021 by Dave Kreskowiak

So what happened when you Googled for "The path to the driver executable must be set by the webdriver.chrome.driver system property"? Always Google for the error message and do a little research before posting a question.

What is the meaning for this?

7 Jun 2021 by Dave Kreskowiak

System Properties (The Java™ Tutorials)[^] Wouldn't is make sense the ChromeDriver class can also query the System properties, with System.getProperty and an arbitrarily chosen property name?

Write a shell script code

6 May 2022 by Dave Kreskowiak

The only code you get is the code YOU write. Asking other people to do your work for you is insulting - yourself. It tells everyone you don't want to learn and that's the one skill you absolutely MUST have when working with code.

Netgear GS108 - 8 Blinking Link LEDs - Can we fix it? Yes we CAN!

1 Jun 2011 by DaveAuld

Netgear GS108 8-port Gigabit switch is unhappy, only wants to blink.......blink no more!

How is a program executed inside the computer hardware when we execute a program

11 Aug 2014 by deepaksharma0390

I want to know the whole execution process of a program when we doubele-click/execute it.I know that when we double -click a program, it is being loaded into the primary memory. I want to know what happens next and how the program is executed by the CPU.Can someone guide me to some...

Simple URB (USB Request Block) Monitor

9 Nov 2012 by Deka Prikarna A.

Simple URB (USB Request Block) Monitor

related to operting system and memory managment

4 Sep 2012 by Dhanraj Varshney Djv

when i deleted the file from recycle bin .where all data goes and how?what the working works behind it?

How can I create shared memory if there is no interprocess communication between two processes?

4 Feb 2010 by Dibyasingh Majhi

How can I create shared memory if there is no interprocess communication between two processes?

Solutions for System Analysis and Design for the Global Enterprise?

20 Feb 2011 by dimitros

anyone knows where can i find solutions for System Analysis and Design for the Global Enterprise by Bentley and Whitten 7th edition??

File System Controls in WPF (Version III)

31 Mar 2018 by Dirk Bahle

Lessons Learned on Software Design with WPF

How we develop an operating system

16 Jun 2011 by divesh12

Contact to Bil Gates..... Its funny. If you create OS try to update in Open source OS. like Ubantu or Linux.

Understanding (all) JavaScript Module Formats and Tools

16 Apr 2020 by Dixin Yan

A one-stop tutorial of all mainstream technologies for JavaScript modules.

Changing Windows Parental Controls in VB.NET

8 Oct 2012 by djdynamix

A little workaround to enable a VB.NET application to read and alter the WPC settings for any user.

how to unmount drives.

1 Apr 2010 by djoo7

:~Hello to codeproject members.I have xp & win 7 os.I wants to unmount the partition of one of OSwhich is not running,& alternate to it.So the one can not access the drives of other OS.please help me out.

Benchmark start-up and system performance for .Net, Mono, Java, C++ and their respective UI

2 Sep 2010 by dmihailescu

What is the start-up and system performance overhead for .Net, Mono, Java versus C++ and Forms, WPF, Swing versus MFC

Using Gmail Account to Send Emails With Attachment

26 Sep 2013 by dontumindit

Sending Email using Gmail account from your application.

Get CPU usage (in %) like in system tray

18 Jun 2011 by Dr.Walt Fair, PE

Have a look at this link.[^]

Has linux message structure like windows?

24 Nov 2014 by E.F. Nijboer

The common mistake most people make. Windows is the name as the os and also of the distribution. In the linux world is is more clear that for example Ubuntu is a distribution of a Linux OS. There are several implementations for messaging available. Have a look at the...

error in populating dropdownlist

13 Nov 2012 by Ed Gepulle

i received this error when populating the dropdownlist. any suggestion pls?System.Web.UI.WebControls.DropDownListthe scenario is, a user is sending information from a c# page and will send it to the email provided.heres the code:protected void btnSubmit_Click(object sender,...

error in populating dropdownlist

15 Nov 2012 by Ed Gepulle

Thanks for your reply. I got the solution for this, i missed to include .text with the other controls. cheers!

Need to access data from system restore point query

11 Apr 2022 by Eddie Winch

Hi there, I have a System Restore Point File, from my Laptop, which I wan't to open on my other main Computer, I copied it from my Laptops System Volume Information Folder, to my Main Computers, System Volume Information Folder, on the C:\...

Locate a folder

16 Nov 2010 by ednakaha

Hello,How can I catch an event of opening any folder in the computer.I'll explain:My project is that if someone opens a folder, my program will check if there is a premission to this users to open the specific folder.How can I know that the user clicks on a folder right...

Partition Tables Explained

2 Nov 2012 by Elias Bachaalany

Format of the partition table accompanied with a GUI demonstration tool

C#: Return values from datarow

10 Sep 2015 by Enemali William

foreach (var dataRow in dr) { filtre.ImportRow(dataRow); }Of what use is your foreach statement since you are just returning a row ? Are you trying to get the columns in the row because dr is already a datarow. You can use this to just add the retrieved row...

File system watcher sometimes does not pick up files properly even if the window service is running properly

11 Nov 2015 by eqxvip

Hi!I had the same problem and reading your solution I realized why. In our code we where listening to CREATED event filtering on XML files as you. This event is always triggered, but since most SFTP software supports continuation on errors the files are created using a temp extension like...

MDAC version problem

1 Jul 2010 by Ersan Ercek

I solved the problem however rather than removing the question, I prefer to explain how, in order to help you aferwards.Despite the lots of incompatibilty posts in several forums,It is necessary to reinstall MDAC. However XP.SP3 does not make it easier for you. You need to :Start-Run...

MDAC version problem

1 Jul 2010 by Ersan Ercek

Dear All,I have a problem. I downloaded the .net project(web) from clients server in order to modify. it is vs2003 asp.net by the way.The software is supposed to extract some data from excel file.however when the code comes the following exception is thrown.The .Net Data OLE DB...

How we develop an operating system

16 Jun 2011 by Espen Harlinn

Here is a couple of links you might find interesting:the Fiasco µ-kernel[^]L4 microkernel family[^]Fiasco is an implmentation of the L4 architecture. It's fairly small, with lot's of interesting features.Get hold of a couple of Andrew S. Tanenbaums' books[^] - compared to most...

devloping distributed system

2 Feb 2012 by Espen Harlinn

Have a look at my answer to Query regarding Design Pattern[^]The Pattern-Oriented Software Architecture series is an invaluable source of information about how to build a distributed system and the other pieces requied to build a working solution.Most of waht you'll find there has been...

How we use C to write Operating System

24 Jun 2012 by Espen Harlinn

When a PC is statered it goes through a boot sequence, and at the end it is able to locate a boot sector on a bootable device, such as a hard disk. Whatever is found there gets loaded into memory by the bios. Then the bios transfers execution to whatever it loaded into memory. This[^]...

How to build my own Operating system ?.

2 Jul 2013 by Espen Harlinn

To get started it might be useful to have a look at a fairly simple OS, like: FreeDos[^]Best regardsEspen Harlinn

Xtreme Cloud Explorer cloud management system for iPhone&iPad

20 Jan 2013 by extremeclouds3

With the popularity of online storage devices known as clouds, popularized by Apple, Google and Dropboxa management system has become essential. Luckily there is now a highly functional and user-friendly application for the iPhone&iPad, designed and created by ‘XtremeApp’This all in one...

how can i create my own mailing system using asp.net 3.5

7 Sep 2012 by Faiz_Khan

I developed a school software where i want that the student interact with each other with email within the software.1) how can i develop the mailing system?2) the mail is stored in the database(MSsql etc) or simple stored as a text file?3) how the process goes?etc etc...thanxFaiz

Get list of registered Dlls & ActiveX controls from registry using c#

16 Aug 2012 by fixthebugg

have a look on these links..Dll Profiler in C#[^]andhttp://stackoverflow.com/questions/1649171/how-to-list-all-activex-controls[^]