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CPS1.NET: A C# Based CPS1 (MAME) Emulator

by shunninghuang

CPS1 emulator, ROM hacking

Intermediate Data Clustering with k-means

by Andy Allinger

Add features to k-means for missing data, mixed data, and choosing the number of clusters

Music Notation in .NET

by Ajcek84

Open source library for music engraving in desktop, mobile and web applications

HandlEdInput - Powerful and Highly Customizable Input Handler for TextBox, RichTextBox and ComboBox

by Edwyn Amador

Handles and validates input typing and pressed keys in TextBox, RichTextBox and ComboBox, displaying custom balloon tips messages

Latest Articles

C# MVVM Toolkit Demo

by Jo_vb.net

This article and the demo are about getting started using the MVVM Toolkit and some self-created interfaces / services for MessageBox and some dialogs.

MathML to/from Plain Text Converter

by Xavier Junqué i de Fortuny

Converts MathML coded string to/from plain text string

WPF: DataGrid Filterable, Multi Language

by Macabies Gilles

An easy-to-use filterable, multilingual custom DataGrid control for managing and filtering data for your WPF applications

The Main Architecture of MAME.NET

by shunninghuang

C# arcade emulator, ROM hacking

All Articles

Text

C# MVVM Toolkit Demo

U 7 May 2024 by Jo_vb.net

This article and the demo are about getting started using the MVVM Toolkit and some self-created interfaces / services for MessageBox and some dialogs.

MathML to/from Plain Text Converter

U 30 Apr 2024 by Xavier Junqué i de Fortuny

Converts MathML coded string to/from plain text string

WPF: DataGrid Filterable, Multi Language

5 Mar 2024 by Macabies Gilles

An easy-to-use filterable, multilingual custom DataGrid control for managing and filtering data for your WPF applications

The Main Architecture of MAME.NET

18 Feb 2024 by shunninghuang

C# arcade emulator, ROM hacking

Truly Understanding Decision Trees and the C4.5 Algorithm through their Implementation in C#

24 Jan 2024 by Nicolas DESCARTES

How to implement decision trees in C#?

artificial-intelligence

machine-learning

Error when using controltemplate and binding together in textbox datagrid WPF

15 Jan 2024 by Sh.H.

I found the answer. I should bind the Text to parent, then bind to the Class.

Error when using controltemplate and binding together in textbox datagrid WPF

15 Jan 2024 by Sh.H.

Hi I have a DataGrid. I used TextBox in its cells. I made a ControlTemplate for it. So My problem is when I use controlTemplate, the Binding of TextBox won't work. But if I directly set everything in the DataTemplate, the Binding works perfect....

Network Sniffer and Analyzer Program - Part 3

9 Jan 2024 by Ammar Albush 1997

Network Sniffer and Analyzer Program written in C# .NET 6.0 Windows Form (Sharppcap, PacketDotNet)

Simple POCO Mapper for EPPlus

18 Nov 2023 by Erik Drent

A simple POCO mapper for EPPlus

Let's Code that Wicked Cool Calculator

30 Oct 2023 by Rami Alshaar

Enhance your coding skills with a walkthrough on how to create a smart calculator with many features made in Python.

artificial-intelligence

Mastering Scrollbars in User Interfaces: A Comprehensive Implementation Guide

25 Aug 2023 by InvisibleMedia

ScrollBars implementation with Windows Forms because the AutoScroll didn't fit my needs

From WAV to Graphics to MIDI

12 Aug 2023 by Andy Allinger

Convert audio to image. (Edit the image.) Convert image to music.

Using Bitwise Operations on Bitfields as a Primitive SIMD

2 Aug 2023 by Patrice T

How to use bitwise operations on Bitfields as primitive SIMD

Automated Ice Skater MonoGame Solution

26 Jun 2023 by Jo_vb.net

Get started MonoGame and use IceSkater C# project

I have this code for a spelling and grammar checker with issues

16 Jun 2023 by Member 11788039

So the spell checker works fine, however there are a few issues. 1.) Does not capitalize the first letter of the alphabet. 2.) Does not underline the error when doing the spelling or grammar check 3.) Most probable the most important the form...

I have this code for a spelling and grammar checker with issues

15 Jun 2023 by Andre Oosthuizen

1. To capitalize, add the following line of code just before you copy your text to the clipboard (Uppercase Letter[^]) - RichTextBox1.Text = Char.ToUpper(RichTextBox1.Text(0)) + RichTextBox1.Text.Substring(1) 2. To underline the errors, you...

Intermediate Data Clustering with k-means

7 Jun 2023 by Andy Allinger

Add features to k-means for missing data, mixed data, and choosing the number of clusters

machine-learning

How to Create a Hotel Room Availability Calendar with C#

4 May 2023 by JayWalks

A walkthrough of code solving a real world problem

Faster than STL

22 Apr 2023 by Ben McNamara

Container classes much faster than STL.

TracerX Logger and Viewer for .NET

11 Apr 2023 by MarkLTX

Easy to use logger with a powerful viewer that supports filtering by thread, logger, etc.

How I read a specific lines text and display in datagridview in VB.NET

19 Mar 2023 by Amitkumaryadava

Hello Great Minds ! I have Difficulties to read text where notepad have large data and strings character like ---- and ... The Data i Want to read data in datagrid Like Below Village Grower Mobile Aadhar 50305 ...

How I read a specific lines text and display in datagridview in VB.NET

19 Mar 2023 by OriginalGriff

The code you show doesn't try to do what you describe: in fact it doesn't do anything useful at all. It looks like you found some "read a file" code and threw two lines into it in the hope it would work: ResultText.Text = line.ToString...

M1.NET - Decrypt Arcade Audio

6 Feb 2023 by shunninghuang

Software named M1.NET which shows the details of decrypting arcade game audio

Fast 2:1 Image Shrink (Scale Down)

16 Nov 2022 by Svetoslav Chekanov

Fast implementation of 2:1 image shrink (full image or part of it)

How can I make my (system font) text dynamically sized (swiftui)

21 Oct 2022 by nessNotFound404

Hello I've been trying to get scaling text(sized to fit it's container without trailing) into my views with the following modifiers below is the custom button code, and the image is it's containing view. I've applied the following modifiers to...

Handle Managed(C#) Event in Managed(C++/CLI)

10 Oct 2022 by Mehul Donga

Handle managed (C#) event in managed (C++/CLI)

How to parse an M3U list using regex in C#

5 Oct 2022 by Jake-J

Hi there, I want to use regex to parse a m3u list. Let's suppose we have this m3u item: #EXTINF:-1, tvg-name="THE NAME" tvg-logo="THE LOGO" group-title="THE TITLE",THE ITEM https://www.SampleSite.com I want to extract THE NAME,THE LOGO, THE...

regular-expression

How to parse an M3U list using regex in C#

5 Oct 2022 by Patrice T

Just a few interesting links to help building and debugging RegEx. Here is a link to RegEx documentation: perlre - perldoc.perl.org[^] Here is links to tools to help build RegEx and debug them: .NET Regex Tester - Regex Storm[^] Expresso Regular...

regular-expression

How to parse an M3U list using regex in C#

5 Oct 2022 by OriginalGriff

Try this: \btvg-name="([^"]+)".tvg-logo="([^"]+)".group-title="([^"]+)",(.*?)\n*(https?\S+) If you are going to work with regexes, get a copy of Expresso[^] - it's free, and it examines and generates Regular expressions.

regular-expression

31 Aug 2022 by rkapl

Automated Setting of the Out of Office Assistant

Regex to Match Version Number Beginning with a Specific Digit

20 Aug 2022 by Brian C Hart

Example of how to use the caret (^) in Regexes that have specific matching requirements

regular-expression

How do I remove things that are in a list from a text file

19 Aug 2022 by Hiruy Metsihafe

I have automated finding the people's last names from a text file and I have stored their names in a (var)list I want to delete their last names from the text file. and I don't fully know how to use truncate there might be mistakes & if there is...

How do I remove things that are in a list from a text file

19 Aug 2022 by Richard MacCutchan

The following code does not look correct. The variable i contains the complete line, but res contains only the last word of the line. The chances are that the two will never be the same. if i != res: f.write(i) Take a look...

How to create a textsymbol?

21 Jul 2022 by dejf111

Hi, I am trying to create a CIMTextSymbol that I could write my string into. Below in the code I have created a generic CIMTextSymbol , but I would like to write some text with it. What I have tried: private static Task...

How to create a textsymbol?

21 Jul 2022 by Richard MacCutchan

See the sample code at CIMTextSymbol Class—ArcGIS Pro[^].

TextBoxWriter: A Little Adapter for Logging or Whatever

1 Jul 2022 by honey the codewitch

Adapt a TextBox to make it writeable like any other text based I/O

Building a C# WPF Twitter Reader with REST API (Now .NET Core 3 Version!)

18 Jun 2022 by Peter Sun (247)

Create a C# WPF app to read Twitter tweets and retweets via REST API with grouping related users / friends by categories. As a bonus, tweets can be saved in Azure / Cloud, and viewed in an Azure website.

Regex - 7 Free Test Tools

14 Jun 2022 by Mark Pelf

We are giving an overview of 7 free Regex tools to test and develop Regex expressions

Python store textfile into mangodb

12 Jun 2022 by Ayesha Tassaduq

Hi i am trying to store a text file in mangoDb. the text file has data of some generated hashes. but i am receiving this error when i try to store file. Error "failing because no such method exists." % self.__name.split(".")[-1] TypeError:...

Python store textfile into mangodb

12 Jun 2022 by Richard MacCutchan

I just tested this with the MongoDB server running and it works correctly. You need to make sure you have a server instance running on your system.

Subnetting with IPv6 - Part 2/2

24 May 2022 by Yücel Güven

IPv6 Subnet Calculator / Tool explained ( latest version: 5.0 )

Morestachio. More Mustachio, Less Mustache - Extending the Mustachio Syntax

16 May 2022 by GerVenson

Morstachio, the upstarter of Mustachio. Formatter and best friend

Generate Variable Substitution-Boxes Starting from a Key

8 May 2022 by Bruno Tabbia

Creation of a substitution box starting from a key and using it in a direct substitution cipher

Create a tabular data from raw datafile

25 Apr 2022 by A v Nov2021

Input in a text file : Combination: 1 . 1 . 1 . 1 var_a: 33 op: -9.234727046103648 Combination: 1 . 1 . 1 . 2 var_a: 31 op: -9.234270216065962 Combination: 1 . 1 . 1 . 3 var_a: 39 op: -9.233204788566372 Combination: 1 . 1 . 1 . 4 var_a: 50 op:...

Create a tabular data from raw datafile

25 Apr 2022 by CPallini

There is a way simpler than using regular expressions: you can split every line, using ":" as separator, e.g. line = "Combination: 1 . 1 . 1 . 1" l = line.split(":") print(l[1]) outputs 1 . 1 . 1 . 1

Create a tabular data from raw datafile

25 Apr 2022 by Richard MacCutchan

You should create a list of tuples from the inputs. Read each set of three lines, and extract the values. Create a tuple of these values and add it to the list. Once you have all the data you can write it out to a .csv file. See 7. Input and...

RLE: The Human Friendly Compression

16 Apr 2022 by Patrice T

RLE (Run Length Encoding): The Human Friendly Compression

MVC .NET Core Dynamic Role Based Authorization

15 Apr 2022 by dnxit

MVC .NET Core 3.1 Dynamic Role based authorization using Authorization Handler & Custom Authorize Policy

mscript - Version 2.0 Adds Error Handling, New Functions, and DLL Integration

2 Apr 2022 by Michael Sydney Balloni

If you were on the fence about adding mscript to your arsenal of system tools, have another look.

Thread-safe Events in C#

11 Mar 2022 by Mark Pelf

Discussion on proper method to check for null-value and raise Event in C#

multi-threading

Fluent Interface Pattern in C# - With Inheritance Problem

5 Mar 2022 by Mark Pelf

Tutorial article on Fluent Interface Pattern in C#

ARC4 Encryption Library

8 Feb 2022 by Pavel Bashkardin

ARC4 (Alleged RC4) Cryptography Provider Class Library

Input files and output files. What's the best solution?

1 Feb 2022 by Niklas Arabäck

Hi, I can't find the right way and hope that you can help me. I need to use input files for my C# program. The file consists of some info in the beginning and is followed by a big table. It's a calibration file. I also need to generate an...

Input files and output files. What's the best solution?

31 Jan 2022 by M Imran Ansari

In Additional with the solution-1. As you mentioned later on it would be a big table. Write your own classes according to config files and go with either XML or JSON because these formats are human-readable, easy to parse and available in most...

Input files and output files. What's the best solution?

31 Jan 2022 by OriginalGriff

I'd use either XML or JSON: build your classes, populate them, and XML or JSON will serialize / deserialize the file in pretty much a single line of code. It's a lot more flexible and "developer friendly" than an INI file!

Countdown with value from a moltiplication, using timer tick

9 Jan 2022 by MXwell8

Hi, I have a question how can I convert the result of a multiplication into hh:mm:ss? This is the code Public Class Form9 Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs) Handles TextBox1.TextChanged Dim nmpts As...

Countdown with value from a moltiplication, using timer tick

9 Jan 2022 by OriginalGriff

OK. The first things is that you don't want to store a value in the textbox that you intend to use as a calculation - that's just a bad way to do things. Instead, treat your "multiplication result" separate as hold it as an numeric value i.e. an...

An Improved Algorithm for Converting State Machines to Regular Expressions

6 Jan 2022 by honey the codewitch

This article describes an improvement to the state removal algorithm for converting FAs to regular expressions

regular-expression

WinForm VB.NET Hosting WPF Ribbon

1 Jan 2022 by Jo_vb.net

Host WPF usercontrol with Ribbon within winforms VB.NET project

Build the Forest in Python Series: Single-Threaded Binary Search Trees

31 Dec 2021 by Shun Huang

Use Python to build Threaded Binary Search Trees

FastFA: A Unicode Enabled Regex Engine for Code Generators

25 Dec 2021 by honey the codewitch

Explore, run, and manipulate DFA regular expressions from graphs, to state machines with this library

regular-expression

Manipulate network adapter via WMI in plain C and C++

18 Dec 2021 by Kai Schtrom

Win32_NetworkAdapterConfiguration WMI class in plain C and C++

Bezier Curve Machine Learning Demonstration

15 Dec 2021 by asiwel

Bezier Curve Classification Training And Validation Models Using ALGLIB

artificial-intelligence

machine-learning

IniReader: A Simple, Tiny INI Reader

13 Dec 2021 by honey the codewitch

An INI reader that is easy to use, easy to port, relatively efficient, and to the point

State Machine Framework in C

30 Nov 2021 by Nandkishor Biradar

A minimalist UML State machine framework for finite state machine and hierarchical state machine in C

Win32:C++ Add Icon to Right Side of Button Text

21 Nov 2021 by REALTBU

Easy to use class which supports displaying icons on button controls

Script to obtain a single equation

14 Nov 2021 by A v Nov2021

Input in a text file: a=2*8 b=3*9 c=4*8 d=5*9 e=a+b f=c+d g=0*6 h=1*7 i=e+g j=f+h output=i+j Desired Output : output=(((2*8)+(3*9))*(0*6))+(((4*8)+(5*9))*(1*7)) What I have tried: #Logic from internet. D = dict() output = None with...

Localhost login pops-up at the top of the screen

11 Nov 2021 by Richard van Kesteren

In VSC I have open 2 files, a HTML and a CSS. Everytime I type in the css file at the top of the screen a text line opens asking to enter a password. [localhost]: enter your password (press 'Enter' to confirmor 'Escape' to cancel) What is this...

Reggie: A Non-Backtracking Streaming Regular Expression Code Generator

10 Nov 2021 by honey the codewitch

Embed fast streaming C# code to match text based on inputted regular expressions

code-generation

regular-expression

Which is the best app for annimations?

2 Nov 2021 by OriginalGriff

This site is for software development questions, not tech support on apps for video. Start with Google: best app for adding animations to video - Google Search[^] but do bear in mind that Windows 7 is seriously out of date, and finding modern...

csppg: A Little C# Preprocessor for .. Whatever

28 Oct 2021 by honey the codewitch

This is a little templating engine build tool I use to make my code generation projects more maintainable.

A Drop-in Indented TextWriter in C#

23 Oct 2021 by honey the codewitch

A handy code snippet that can set indentation levels while rendering multipart documents with a TextWriter

Init Threads in MFC and Win32

17 Oct 2021 by Petrov Vladimir

Starting Threads in MFC and Win32 and some handling samples

multi-threading

C# how can I do this - number of bytes retrieved from multiple URL

16 Oct 2021 by candijen

I have this question and I am not able to figure it out. Bulk Download: The application should provide a bulk download facility as follows. The user should be able specify a file name, default setting bulk.txt, containing URLs (exactly one per...

Simple CRUD with the .NET Micro ORM "Symbiotic"

5 Oct 2021 by Eric P Schneider

The article demonstrates database create, read, update, delete operations using the .NET Symbiotic ORM.

Audio Steganography for Pretty Good Concealing (AS4PGC)

25 Sep 2021 by Clark Fieseln

Compress, encrypt and hide a secret file inside an audio file (MP3, WAV, OGG, FLAC, ..)

Extract arabic text from PDF

30 Aug 2021 by sahnoune_khaled

I am trying to make a program which extracts the text from a PDF document PDF documents contain ARABIC text written by different types of FONT when I extract the text it works with some files and others not it gives me ambiguous Text I am using...

Customized Onscreen Keyboard in C#

11 Aug 2021 by Kourosh K Tari

Customized onscreen keyboard in C# for Windows

Adventures in Debugging: Hosting Processes, Windows Subsystems, and Other Magical Things

1 Aug 2021 by David A. Gray

Though useful and mostly harmless, pitfalls can lead unwary developers astray.

CSV Interface - A CSV Parser for VBA. Stable, Efficient, Flexible and Standards-compliant

11 Jul 2021 by W. García

To cover the need to import information from a CSV file directly into RAM, in an efficient, secure and stable way, from VBA, specialized libraries are needed to ensure the ease of use and integrity of the data.

Build the Forest in Python Series: Binary Tree Traversal

4 Jul 2021 by Shun Huang

Use Python to implement Binary Search Tree Traversals

Build the Forest in Python Series: Double-Threaded Binary Search Tree

4 Jul 2021 by Shun Huang

Use Python to build Double-Threaded Binary Search Trees

Wallpaper Collection - C# WinForms Utility - v1.1.0.2

29 Jun 2021 by Joe Dufresne

An easy to use tool to save your Windows Spotlight (lock screen) images for use as desktop wallpaper

How can I set my text file?

7 Jun 2021 by Member 15170612

Hello, I have a question, I would like to like the WPF application saves time similar to the one in the rankings. Time and number of attempts is not a problem to list but the problem occurs when I want to sort it in a text file. EDIT:I'll start...

How to Caluculate The Product of two text boxes and print to Third Text Box

7 Jun 2021 by charuwaka

i am visual basic 2010i am Making a hotel bill in that there are two text boxes Quantity and Priceand last Total Text Box. i want code to multiply those Quantity and Price text boxes get multiplied and should appear in third Text Box Totalwhat is The code please tell mequantity...

sum of html text boxes in repeater on text change using jquery

4 Jun 2021 by kk2014

hi all,i have two HTML text boxes inside repeater. on text change of those text box i want to do sum and display in 3rd HTML text box using JQuery.how can i achieve it?Thanks,KK

How can I set my text file?

27 May 2021 by Richard MacCutchan

You have raised this question a number of times and you still appear to be struggling. Think carefully about what you are trying to do, and the order in which you do it. 1. Call the Read method to read the records from the input file. 2. Any...

How can I set my text file?

26 May 2021 by OriginalGriff

The error message says it all: the file you are trying to read is in use. When you open a file for writing, the stream acquires an "exclusive lock" on the file to prevent the contents changing while it is being read and potentially invalidating...

Vector: A Concept-Driven Approach to SQL UDT

26 May 2021 by Giovanni Bejarasco

A walkthrough in UDT programming with primary focus on database concepts

Writing Compiler Front-Ends for LLVM with Lua using Mewa

26 May 2021 by Patrick P. Frey

In this article we see how a very primitive compiler is written in Lua using Mewa and how to compile and run a simple demo program in the shell.

Deploying AI Docker Containers to the Cloud

25 May 2021 by Jarek Szczegielniak

In this article, we publish our NLP API service to Azure using Azure Container Instances.

artificial-intelligence

machine-learning

Debugging AI Code Running in a Docker Container

21 May 2021 by Jarek Szczegielniak

In this article we use Visual Studio Code to edit and debug our increasingly complex code running inside a Docker container.

artificial-intelligence

machine-learning

How to set a ranking in text file?

17 May 2021 by Member 15170612

Hello, I would like to create a time entry in the text file in the form of a ranking. Ranking would be sorted by time value. I create WPF Application. What I created will only write time and further writing to the file is no longer possible. ...

How to set a ranking in text file?

17 May 2021 by OriginalGriff

Quote: so again StreamReader reads a text file and then edits it like like MessageBox? No ... a StreamReader does what it says: reads a file from the beginning to the end. And the problem you have is that text files have no organization: you...

WPF and RX - Dispose vs Complete

16 May 2021 by G.TR

This tip shows two different approaches for disposing view models that use Reactive Extension

How can I echo text value underneath eachother?

16 May 2021 by Jeremy Monney

I have multiple values in a .txt file that are all in a different line and i tried to echo the value in a php like this: $myfile = fopen("pws.txt", "r") or die("Unable to open file!"); echo fread($myfile, filesize("pws.txt")); fclose ($myfile); ...

How can I echo text value underneath eachother?

16 May 2021 by Gerry Schmitz

Use file_get_contents. echo - PHP: How do I display the contents of a textfile on my page? - Stack Overflow[^]

Code always outputs text1 instead of text2

7 May 2021 by gxzs.

I'm trying to make a program that checks username availability on Ubisoft.com. The code I now have should be printing 'available' if the page says "Nothing is broken" and 'taken' if the username is already taken. An example of a taken username...

Code always outputs text1 instead of text2

7 May 2021 by OriginalGriff

Quote: How do I fix that. The only way to do that is to use the debugger (pdb — The Python Debugger — Python 3.9.5 documentation[^]) to look at exactly what you have returned from the site, and check exactly what is happening to that data as...

Code always outputs text1 instead of text2

7 May 2021 by Richard MacCutchan

That is most likely because the returned text always contains the string "Nothing is broken". Examination of the data will confirm.