C#

Great Reads

Maintain Scroll Position Problem fix for Chrome.

by Wonde Tadesse

The other option will be to use Update Panel ASP.NET control as much as possible. It helps to retain the current position on the page whenever a postback happens to the page.

Comparator - Data Sources Comparer

by Alex Pumpet

A simple program for comparing table data from two sources - SQL databases, Excel, CSV or XML-files

Introduction to D3DImage

by Dr. WPF

.NET 3.5 SP1 is here! It's time to break out your DirectX skills. This article provides the information necessary to get started using a new DirectX interop feature in WPF called D3DImage.

ASP.NET: Understanding OWIN, Katana, and the Middleware Pipeline

by John Atten

OWIN, Katana and Middleware Pipeline in ASP.NET

Latest Articles

Decouple ASP.NET Core Identity, Authentication and Database Engines

by Zijian

Reusable codes for JWT security in business applications

Simplifying Dynamic SQL Queries with Dapper

by Mishael Ogo

A look at a simple SQL builder for Dapper

Visual FA Part 5: Real World Lexing Example w/ JSON

by honey the codewitch

Implementing a simple JSON parser with Visual FA

Functional Programming in C#

by Akram El Assas

Functional Programming in C# through Algebra, Numbers, Euclidean Plane and Fractals

All Articles

top

C#

Error CS1513 (quick question)

24 May 2019 by

These are valuable tips for every developer. Hope the OP will follow your suggestions in future. 5*

Wait for webBrowser to finish loading the page

1 Mar 2011 by !Kerish11

Hi !I have a problem.I use the webbrowser class to login to a place.After I have logged into the site, I want to visit a link.The problem is when I have logged into the place, it won´t visit the link. If I show an messagebox after logged in and before I visit the link, it...

How Should I Do To Make My Own Framework

10 Feb 2015 by #1Gorilla

Hi! everyone. i am planning to make my own framework using ms enterprise libraries. (exactly i don't know whether it would be good to use ms enterprise libraries)but i have a trouble that i don't know where i should begin. should i design UML Classes first? or code anything ?if...

.NET

How Can I Model This On Uml Diagram In This Case

12 Apr 2015 by #1Gorilla

hi. i'm using staruml modeling tool. (but i'm novice to model in umlㅠㅠ)while i made a simple C# code and convert this code into uml, i am hit the roadblock. how should i express below codes in uml models. Code:public static IDataLayer GetInstance(){ DatabaseTypes dbType =...

UML

Create an Adobe InDesign Document with c#

7 Nov 2010 by #andy

Sample code to get you started

COM

how to read Excel file in c# by using in sql

16 Jun 2015 by #dev_Preet

You can try this --> http://www.aspsnippets.com/Articles/Read-and-Import-Excel-Sheet-into-SQL-Server-Database-in-ASP.Net.aspx[^]http://csharp.net-informations.com/excel/csharp-read-excel.htm

How to run a web application(ASP.NET) built using visual studio 2013 on a usb flash drive?

17 Apr 2017 by #dev_Preet

i made an asp.net based web site using visual studio 2013 ,and want to run that web site in usb flash drive , is there any application which might help me regarding this problem? What I have tried: when i used tools which are developed for this job like cassini dev etc i got : Configuration...

VS2013

ASP.NET

Persistent String Parser

21 Dec 2008 by #realJSOP

Parse a string with quoted elements, insert/add/delete elements, and is CLS compliant

Anagrams - A Word Game in C#

4 Nov 2012 by #realJSOP

The classic word game using words and letter scores allowed in Scrabble

Overriding App.Config Settings for Multiple Objects

17 May 2008 by #realJSOP

One method for loading common and object-specific data from your app.config file.

Render Text On A Bitmap (and other stuff)

28 Sep 2008 by #realJSOP

Put text on a bitmap, make your winform app go full-screen, and say hello to some simple LINQ code.

Scheduling Future Dates

1 Oct 2008 by #realJSOP

Implement repetitive tasks at consistent intervals

User Login For WinForm Applications

2 Oct 2008 by #realJSOP

Discusses windows authentication and application-specific authentication for WinForm applications

CodeProject Article Scraping

11 Dec 2010 by #realJSOP

Scrape the My Articles page here on CodeProject to keep an eye on your articles.

Being a Programmer

12 Oct 2016 by #realJSOP

My views on how to be a proper programmer

C++

Dev

Wizard Form Implementation

24 Jun 2010 by #realJSOP

Create a dynamically resizable wizard form

.NET

WinForms

Dev

Share User Settings Between Applications

17 Dec 2008 by #realJSOP

A not-so-dotNet way to allow multiple programs to share a single settings file

Keep Your InkJet Print Head Clean

4 Jan 2009 by #realJSOP

A utility that you can use to "exercise" your inkjet printer without wasting a lot of ink or paper

Duplicates in a Arraylist

20 Apr 2009 by #realJSOP

You should take "C#" out of your sig until you learn it.This has been asked/answered at least twice before. It's homework, isn't it? "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy...

Ok, is it just me or...?

5 Apr 2009 by #realJSOP

0) You're stupid.1) MSDN sucks, so that makes you stupid twice - first, because you're using MSDN, and second, because you don't understand what they've written (what little help they provide is written in clear English). "Why don't you tie a...

Doubt: To all those wishing to ask us to do their work.

19 Mar 2010 by #realJSOP

Since this seems to be a particularly popular subject line, I thought I'd exploit it a little.To those of you required to come up with a project for school, do not ask what we think. Why? Because we'll tell you that you're not much of a programmer if you can't identify something like this on...

Using files that are located under the project?

25 Aug 2008 by #realJSOP

Look at my reply to rotter512...Once you add the files as resources and compile the app, it's a piece of cake to extract them at runtime. "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your...

Personal Opinion

28 Oct 2008 by #realJSOP

The app.config is a damn handy thing, and unless you have some fairly bizarre requirements, you should make use of it. The only bad thing about the app.config is that assemblies (DLLs) cannot easily have their own app.config.User settings...

Windows Service Gotcha

19 Mar 2010 by #realJSOP

This is not a question, but is too short to be an article. Learn from my mistake.Yesterday, I was testing a windows service I wrote using Visual Studio 2008 on a Windows 2000 machine. I had originally targeted .Net 3.5 when I created the project, and had to re-target the assemblies to 2.0...

Philisophical question [edited]

15 Jan 2009 by #realJSOP

FXCop will trigger an "issue" if you do the 2nd thing, but FXCop is, after all, just a style guide and most of what it chokes/pukes on can safely be ignored. I tend to use method #2 in your examples. "Why don't you tie a kerosene-soaked rag...

Deploying user-independent configuration/ini files for use with Windows .NET applications

2 Jan 2010 by #realJSOP

This is how I do it:public static System.Environment.SpecialFolder m_specialFolder = Environment.SpecialFolder.CommonApplicationData;

Windows

security

How to fetch hyperlink address and the anchor text in C# winform application

2 Jan 2010 by #realJSOP

Does aTags[0].InnerText do it?

C#2.0

security vulnerabilities

6 Jan 2010 by #realJSOP

The biggest vulnerability is either the rookie programmer who is left to his own devices, or an experienced programmer that assumes too much.The language itself (and the .Net Framework in general) are NOT the problem with regards to security.

Problem in coding

7 Jan 2010 by #realJSOP

I suggest you find another line of work. Maybe... running the machine that puts ridges on the sides of checkers.

ASP.NET

Incorrect Syntax near WHERE

8 Jan 2010 by #realJSOP

The first thing I would do is evaluate the string in the debugger BEFORE it's sent to your stored procedure. At that point, you can paste it into SQL Manager Express and try the query there to see WHERE your problem is.

software security

9 Jan 2010 by #realJSOP

When I googled this (like you should have), I found this:In some situations a program may make the assumption that a variable always contains a positive value. If the variable has a signed integer type an overflow can cause its value to wrap and become negative, violating the assumption...

Unhandled Exception in XAML - How to solve ?

9 Jan 2010 by #realJSOP

You have to have Microsoft Expression to work on the project (or find the redistributables somewhere (probably the MSDN site).

convert string to integer in C# without library functions

9 Jan 2010 by #realJSOP

But why? Since the framework is already loaded, why not make use of the functionality instead of reinventing the wheel? This question makes no sense at all.

how to just compare to date not with date time

9 Jan 2010 by #realJSOP

You can pass just the date from a DateTime object - it's a property.DateTime dt = DateTime.Now;CallMySql(dt.Date);

C#2.0

can i find out dynamic added control in window using C# & net?

9 Jan 2010 by #realJSOP

You could enumerate all child controls from the roignal form template and compare the list to all of the controls enumerated from the loaded form.Reflection is your friend.

How to use VB.NET control in C# project?

9 Jan 2010 by #realJSOP

What d@nish said... (Content must be at least 30 characters? That makes it impossible to type "google" and be done with it.)

software security

9 Jan 2010 by #realJSOP

My guess would be having more than one...

User Control Component

9 Jan 2010 by #realJSOP

We don't do people's homework for them.EDIT ================I strongly doubt the veracity of your claim that it's not homework. Since you're a programmer, and you know your requirements, why don't you at least TRY to do it yourself? Then, if/when you have problems, come back here and...

I'm beginning Gis, please tell me how to build a application for Gis use C#

10 Jan 2010 by #realJSOP

Take a class, or read a lot of books.

how to find the seleted items from list box

11 Jan 2010 by #realJSOP

There is a collection in the ListBox object called SelectedItems, so try this:foreach (MyObject item in listBox.SelectedItems){ // do soemthing with the item}

How to verify if a file replication completes

11 Jan 2010 by #realJSOP

You could do a FileSystemWatcher that watches the newly created file to either look at it's size or wait for the file close event.

critical issue from Thread Programing.

11 Jan 2010 by #realJSOP

Well, you can get a list of the current process' running threads, and then do something with the list:using System.Diagnostics;ProcessThreadCollection threadlist = theProcess.Threads;foreach(ProcessThread thread in threadlist){ // do something with the thread, thread.Id,...

Simulating keypress in C#??

11 Jan 2010 by #realJSOP

Use Spy++ to get a handle to the start button, and then post the appropriate system message using that hwnd.

C#3.0

Split the datatable in to multiple tables of 10 records and execute all the tables using Threading

11 Jan 2010 by #realJSOP

Instead of doing it that way, just create a thread pool and write a thread method that does the required processing, and queue up as many threads as your system can handle and let them all run simultaneously. The thread pool will automatically execute any thread that's queued up when there's...

Is it possible to change the string table values in Shell32.dll using c# ?

11 Jan 2010 by #realJSOP

I wouldn't do it because it's a system DLL, and Vista/Weven don't like it when you mess with system DLLs.

shell

Windows

file

Image Box Error in WPF

12 Jan 2010 by #realJSOP

I believe your app didn't unload all the way the last time you ran it, and Windows thinks the file is still in use...

change the tab page

12 Jan 2010 by #realJSOP

I believe you have to set tabControl.SelectedIndex to the index of the tab you want to activate.

Image Box Error in WPF

12 Jan 2010 by #realJSOP

BTW, it's much safer to use System.IO.Path.Combine when you're building a path like that.

Parsing a string programmatically in C#

13 Jan 2010 by #realJSOP

Put pointy brackets around it and parse it like XML with Linq-to-XML. Just treat everything like an Attribute.// our original stringstring text = "screen_fadetimeout=\"0\" font=\"Courier New\" fontsize=\"11\" linesize=\"4\" theme_color1=\"-1518056\" theme_color2=\"-9674238\"";// add our...

C#3.0

string

I want to convert vb.net to c#

13 Jan 2010 by #realJSOP

I've used this online converter[^], but it's pretty bad at converting. Most of the other online ones are just as bad (as Christian has already noted.If you google "VB.Net to C# converter", you'll get quite a few hits on commercial products. Keep in mind that none of them will be able to do...

.Net - Use The Framework

22 May 2010 by #realJSOP

Don't reinvent the wheel - use the one that's already on the cart.

XML

.NET

LINQ

use other project's form

15 Jan 2010 by #realJSOP

You can add a reference to the other project's assembly...

How to change the default grey color of disabled ToolStripItem Text

15 Jan 2010 by #realJSOP

You need to override one the event responsible for painting the toolstrip items. I don't know precisely which one, but it shouldn't be that hard for you to figure it out.

Posting Article

15 Jan 2010 by #realJSOP

You can't improve "average" developers via documents discussing proper object-oriented techniques. It's kind of like the old phrase, "You can lead a horse to water, but you can't make it drink."Second, if you can't describe ALL of the necessary OO terminologies in 30 pages, your article is...

C#3.0

win7 32bit environment variables

13 Jan 2010 by #realJSOP

Try this instead:string pfile = System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "notes.txt");using (StreamReader sr = new StreamReader(pfile);

making labels,picturebox,combobox transparent in C# form

13 Jan 2010 by #realJSOP

Set the opacity property to 0.xx. Opacity of 0 is invisible, opacity of 1.0 is completely opaque (visible).

Printing a double number to exact format

14 Jan 2010 by #realJSOP

Why won't this work?int divisor = 983;int dividend = 1;int scale = 2000;string padding = "";padding = string.Format("{0}{1}{2}", "{0:0.", padding.PadRight(scale, '0'), "}");string result = string.Format(padding, (double)dividend / (double)divisor);Of course,...

C#3.0

Printing a double number to exact format

14 Jan 2010 by #realJSOP

I would have used a StringBuilder instead of a LinkedList, and decimal instead of int...decimal Rem = 10;decimal Number = 983;int MAXLEN = 2000;StringBuilder result = new StringBuilder("0.");for (int i = 0; i

C#3.0

Printing a double number to exact format

14 Jan 2010 by #realJSOP

Here's a better answer:This is your version. It takes 2000 calculations and string moves, and generates incorrect results to boot:static string Method1(){ int iterations = 0; decimal Rem = 10; decimal Number = 983; int MAXLEN = 2000; StringBuilder result = new...

C#3.0

Printing a double number to exact format

14 Jan 2010 by #realJSOP

Look at the text your tried to copy, and you'll see the appropriate characters.When you copy the code from the screen, it's substituting the escape codes for the characters.

C#3.0

Printing a double number to exact format

14 Jan 2010 by #realJSOP

Run it through the debugger and find out.

C#3.0

How to Change ScrollBar Apperance ?

17 Jan 2010 by #realJSOP

I used google, and what do you know? I found an article right here on CodeProject.Using Google is fun[^]

IShellFolder::GetUIObjectOf

17 Jan 2010 by #realJSOP

Try this link:http://stackoverflow.com/questions/1593079/develop-an-application-similar-to-windows-explorer[^]And here's the pInvoke page about that method:http://www.pinvoke.net/default.aspx/Interfaces/IShellFolder.html[^]If you google the method name itself (like I did), you'll...

IShellFolder::GetAttributesOf

17 Jan 2010 by #realJSOP

Go here to learn how to use it correctly:http://www.pinvoke.net/default.aspx/shell32/SHGetFolderLocation.html[^]After that, use google to find examples of using it in C#. I'm sure that if you actually use the debugger provided in Visual Studio, you'll be able to find out what it's...

C# XmlResolver to map local path to local path?

17 Jan 2010 by #realJSOP

Try adding this *AFTER* the StartInfo.FileName line:condor_status.StartInfo.WorkingDirectory = System.IO.Path.GetDirectory(condor_status.StartInfo.FileName);or set your own application's current directory to the same path as your CondorStatus app because it looks like it's writing a...

Initialization of "StoredProcedureDeadlockRetries" Exception

17 Jan 2010 by #realJSOP

It looks like you're leaving a message for someone specific, and probably in a forum for an article. Nobody has any idea what you're talking about.

.NET

.NET3.5

Error:Failed to grant permission to execute

20 Jan 2010 by #realJSOP

I found this using the magic answer tool we all know as google:"In control panel, select Administrative Tools > .NET Wizards. You can use the Trust Assembly wizard to change the permissions on all associated assemblies (including DLLs) with the project. You change it to "full trust" and...

Source example for capturing a screen capture of a WPF Window

17 Jan 2010 by #realJSOP

I found this on google:http://www.c-sharpcorner.com/UploadFile/perrylee/ScreenCapture11142005234547PM/ScreenCapture.aspx[^]Before using that example, I would check pInvoke for the correct signatures of the interop calls because I'm almost positive that what you see at the link provided...

Comparing to results in method C# wpf

17 Jan 2010 by #realJSOP

Why are you comparing label values? That's really bad form. The code you posted doesn't make any sense at all.

WPF

Trackbar or Slider with customized tickmark text

17 Jan 2010 by #realJSOP

I ended up just putting label controls where I wanted text. I don't think you can label the tick marks in the control itself without overriding it with your own control.Beyond that, the labels you want don't mean the same thing. The tick marks on a track bar control are evenly spaced and...

WinForms

custom-controls

Help me in minimizing the windows form to system tray....

17 Jan 2010 by #realJSOP

Catch the event that displays the form when you're restoring it from the systray, and add this line to the event handler.this.WindowState = FormWindowState.Normal;

C#2.0

String manipulation

17 Jan 2010 by #realJSOP

Use Split('/') to get the separate lines, and then for each line, use Split(' ') to break the line up into words.At that point, you can use the TryParse() method for the desired type to retrieve data. You'll have to do additional coding to determine exactly what data you're getting (to see...

How can I get the path of a dynamically created link when clicked?

17 Jan 2010 by #realJSOP

You could use Linq-to-XML to parse the a tag and retrieve the href attribute. That will give you the link itself.

ASP.NET

String.Format

17 Jan 2010 by #realJSOP

Or, you can do this:string myString = string.Format("{0:00}", number);

problem with type casting

18 Jan 2010 by #realJSOP

If you are dividing int values, you must cast them to doubles if the receiving variable is a double.For example, this will result in "0":int x = 1;int y = 2;double z = x / y;Where this will result in the expected 0.5:int x = 1;int y = 2;double z = (double)x / (double)y;

full screen application in wince

18 Jan 2010 by #realJSOP

Try this:this.Bounds = Screen.PrimaryScreen.Bounds;this.TopMost = true;

how to use web service in our .net project?

19 Jan 2010 by #realJSOP

Google is your friend. No - really - it is.

Whats a better language, C++ or C#

19 Jan 2010 by #realJSOP

Philosophical opinions aside, there are no advantages to a given programming language. Each one is useful and can be "the best choice" for a given task. Only the programmer can determine a given language's fitness for a particular task, and even that decision is based on his own level of...

C++

Can i develop a UML Drawing Tool using C#.net?

19 Jan 2010 by #realJSOP

I'm positive that you don't have the skills required to do this.

Restrict Text Entry in TextBox

20 Jan 2010 by #realJSOP

Beyond what others have said, you really shouldn't throw a message box at the user when they type an invalid character. Just beep the speaker, and be done with it.

C#3.0

Pick ImagesFiles from client machine to show on Web Site

20 Jan 2010 by #realJSOP

I wouldn't visit a site that I knew could scrape files off a client machine. In fact, I'm pretty sure that unless you convince the user to install an ActiveXcrement module, this is pretty much impossible to do.

ASP.NET

How to uncheck Checkbox without raising event

20 Jan 2010 by #realJSOP

Try it this way in your form class:private bool initialized = false;public MyForm(){ InitializeComponents(); this.initialized = true;}void checkbox_clickevent(object sender, EventArgs e){ // initialized prevents the message box from being displayed in the ...

c# help to write a project

20 Jan 2010 by #realJSOP

Take a programming class (actually, you should take a BUNCH of programming classes). Remember, google is your friend.

database connectivity

20 Jan 2010 by #realJSOP

This question cannot possibly elicit a "quick answer". Try posting in the appropriate forum instead.

Made thread of foreach loop

21 Jan 2010 by #realJSOP

Look into using a BackgroundWorker object. I would give you specific code, but there are plenty of examples on the internet. Just use google to find them.

how to define a delimiter in C#

21 Jan 2010 by #realJSOP

You could try something like this before doing anything with the data:string myString = "a b c";do{ myString = myString.Replace(" ", " ");}while (myString.IndexOf(" " >= 0);myString = myString.Trim();

Index was outside the bounds of Array

21 Jan 2010 by #realJSOP

USE THE DEBUGGER.It would have allowed you to discover that there is only one item in the rdr object. Using a value greater than 0 will almost always result in an exception.

C# Help in Formatting Text Output at Console

21 Jan 2010 by #realJSOP

Why use math when you can do it with the framework?int value = 12345;string text = string.Format("{0:0 0 0 0 0}", value);

Numeric textbox required

21 Jan 2010 by #realJSOP

Handle the TextChanged event for the textbox, and eliminate anything in the TextBox.Text property that's not a numeric digit.

Multiple Subsequent "Main" Forms in C# Apps