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Great Reads

Comparator - Data Sources Comparer

by Alex Pumpet

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

C# USB HID Interface

by Szymon Roslowski

Just another approach to understanding communication between HID devices and C#.

Cryptographic Interoperability: Keys

by Jeffrey Walton

Import and export Cryptographic Keys in PKCS#8 and X.509 formats, using Crypto++, C#, and Java.

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

by shunninghuang

CPS1 emulator, ROM hacking

Latest Articles

Build Rich Web Apps with ASP.NET Core and Sircl – Part 4

by Rudi Breedenraedt

In this series, we will see how to build interactive web applications in ASP.NET Core with the help of Sircl.

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.

WPF mDNS (Bonjour) discovery tool to discover available network devices/ services

by Bharath K A

Multicast DNS (mDNS) is used to perform peer-to-peer discovery of services/devices on a local network

Fededim.Extensions.Configurati...

by Federico Di Marco

Fededim.Extensions.Configuration.Protected is an improved ConfigurationBuilder which allows partial or full encryption of configuration values stored inside any possible ConfigurationSource and fully integrated in the ASP.NET Core architecture using Data Protection API.

All Articles

.NET

Build Rich Web Apps with ASP.NET Core and Sircl – Part 4

N 6 May 2024 by Rudi Breedenraedt

In this series, we will see how to build interactive web applications in ASP.NET Core with the help of Sircl.

C# MVVM Toolkit Demo

U 5 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.

WPF mDNS (Bonjour) discovery tool to discover available network devices/ services

N 5 May 2024 by Bharath K A

Multicast DNS (mDNS) is used to perform peer-to-peer discovery of services/devices on a local network

Fededim.Extensions.Configuration.Protected: The Ultimate Integration between ASP.NET Configuration and Data Protection API

U 4 May 2024 by Federico Di Marco

Fededim.Extensions.Configuration.Protected is an improved ConfigurationBuilder which allows partial or full encryption of configuration values stored inside any possible ConfigurationSource and fully integrated in the ASP.NET Core architecture using Data Protection API.

Build Rich Web Apps with ASP.NET Core and Sircl – Part 3

U 3 May 2024 by Rudi Breedenraedt

In this series, we will see how to build interactive web applications in ASP.NET Core with the help of Sircl.

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

Atata - C# Web Test Automation Framework

U 23 Apr 2024 by Yevgeniy Shunevych

An introduction to Atata C#/.NET web UI test automation full-featured framework based on Selenium WebDriver

Couldn’t get equations in HTML when convert word .docx file to HTML file in C#.

N 23 Apr 2024 by M-Badger

I've not tested this but it would appear that the MS interop library version that you are using doesn't know how to convert images into MathML or LaTeX format. So either you need to convert them to MathML or LaTeX in the document before saving...

Couldn’t get equations in HTML when convert word .docx file to HTML file in C#.

22 Apr 2024 by Conduct dotnet

I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the...

Data not loading on page refresh in blazor webassembly standalone app

20 Apr 2024 by Graeme_Grant

Like desktop apps, you should use multiple techniques to capture and handle errors in your app. Blazor is no different. This page lists a number of strategies that you should be using: Handle errors in ASP.NET Core Blazor apps | Microsoft...

Data not loading on page refresh in blazor webassembly standalone app

20 Apr 2024 by Prasad Sathe

Data not loading on page refresh in blazor webassembly standalone app What I have tried: I have created a sample web app in blazor as webassembly standalone app, then I simply published this web app in a local folder and hosted it in the iis as...

Simplifying Dynamic SQL Queries with Dapper

16 Apr 2024 by Mishael Ogo

A look at a simple SQL builder for Dapper

.NET 8 — Transactional Outbox Pattern With EF Core

16 Apr 2024 by GabrieleTronchin

In this project, I've implemented the Transactional Outbox Pattern using EF Core.

entity-framework

Format of the string does not conform to specification starting at index 0

13 Apr 2024 by SproketCoder

I've been attempting to retrieve a table from the SQL DB based on user inputs, but I'm encountering the following error: "Format of the string does not conform to specification starting at index 0". The query I'm using is "SELECT * FROM...

Format of the string does not conform to specification starting at index 0

12 Apr 2024 by OriginalGriff

Your command string is wrong: SELECT * FROM @Tablename WHERE Created_On >= '@StartDate' AND Created_On

Functional Programming in C#

11 Apr 2024 by Akram El Assas

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

How to fix this issue

9 Apr 2024 by OriginalGriff

Start by looking at the SQL command that those parameters relate to: check what parameter you are assigning to "GroupId" and make sure it is a valid ID. When you are sure that is right, check the parameter name against the variable, and look at...

How to fix this issue

9 Apr 2024 by Dave Kreskowiak

Quote: This is my code in this I pass parameters like groupid declared string datatype to this function but in sp I declare groupid as a parameter as int is this a issue or not What do you mean "is this an issue"? Obvious it is, otherwise you...

How to fix this issue

9 Apr 2024 by Rajalakshmi Raji

Conversion failed when converting the varchar value 'GroupId:' to data type int. 1 CUS | Conversion failed when converting the varchar value 'GroupId:' to data type int. 1 CUS this is my issue at...

Im having issues with godaddy windows hosting server, trying to get this contact form working, works great on local, but not godaddy server

8 Apr 2024 by Rod Kemp

Sounds like you are running into a SPF,DKIM, DMARC authentication issue. SPF is a DNS record that tells the receiving email server if the sending server is a valid sender for the domain in the from field of the email. In your case you have the...

Im having issues with godaddy windows hosting server, trying to get this contact form working, works great on local, but not godaddy server

8 Apr 2024 by Member 11290735

using System; using System.Collections.Generic; using System.Linq; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using...

Im having issues with godaddy windows hosting server, trying to get this contact form working, works great on local, but not godaddy server

8 Apr 2024 by Pete O'Hanlon

As you are having a problem with a hosting provider, the best thing for you to do is to get in touch with GoDaddy and talk to their support team. You can find their support here[^].

Integer Overflow Vulnerabilities in .NET

8 Apr 2024 by Jason Sultana

Integer overflow vulnerabilities in .NET and other strongly typed applications

What to do image processing or machine learning for task circle detect and compare

7 Apr 2024 by Member 16238522

Complimenti! Articolo interessante! Ѕе cerchi un' idea sս dove andare in vacanza vai su seViaggi

artificial-intelligence

image-processing

machine-learning

image-classification

image-recognition

C# .NET Core Event Source with Martendb

31 Mar 2024 by GabrieleTronchin

A simple implementation of MartenDB. MartenDB is a .NET Transactional Document DB and Event Store on PostgreSQL. For more information about MartenDB

How do I clear web browser navigation history from code from web app (ASP MVC .NET CORE)

30 Mar 2024 by Pete O'Hanlon

If you want to annoy users, come up with a way to prevent them from being able to go back from your site. There is a way that you could, sort of, achieve this which is to open a new browser tab when you navigate into your site. Your users will...

How do I clear web browser navigation history from code from web app (ASP MVC .NET CORE)

30 Mar 2024 by Dave Kreskowiak

To directly answer the question of a "web app", no, you cannot touch the browser, or any objects in it, like navigation history, from your server-side code. Grant has given you the only options you have from non-privileged code, which does not...

Use MailKit and GreenMail to develop a robust email interaction

30 Mar 2024 by GabrieleTronchin

In this project, I leverage MailKit to seamlessly manage email communication with a test MailService.

How do I clear web browser navigation history from code from web app (ASP MVC .NET CORE)

30 Mar 2024 by Graeme_Grant

I did a quick Google Search: js clear navigation history - Google Search[^] Found the following answer: Window: history property - Web APIs | MDN[^] Quote: For security reasons the History object doesn't allow the non-privileged code to access...

How do I clear web browser navigation history from code from web app (ASP MVC .NET CORE)

29 Mar 2024 by Perić Željko

Hello, When I right-click the navigate back arrow in my web browser, I can see a list of previous URLs. Is there a way to clear that history from code in a web app? All the best. What I have tried: Searched all over the Internet, and except...

How convert opencvsharp.mat object to skbitmap (skiasharp library)

29 Mar 2024 by Andre Oosthuizen

Not my field of expertise at all but I found the following which might point you in the right direction - System.Drawing.Image to SkiaSharp[^] MS Learn | System.Drawing.Common only supported on Windows[^] Convert System.Drawing.Icon to...

How convert opencvsharp.mat object to skbitmap (skiasharp library)

28 Mar 2024 by Balanka228

OpenCvSharp.Mat object has ToBitmap() method (to System.Drawing.Bitmap). I am using SkiaSharp library. How convert OpenCvSharp.Mat image to SKBitmap without using System.Drawing What I have tried: I tried to create my own method that converts...

While converting the pdf base to image bytes the image quality is getting blur as well as content in C# .NET application

26 Mar 2024 by Shahbaz435

I've a pdf base64 string and I want to convert that into a image bytes, but while converting the image quality is getting compromised and the content is getting blury. What I have tried: public byte[] ConvertPdfToImg(string soapResponse) { ...

While converting the pdf base to image bytes the image quality is getting blur as well as content in C# .NET application

26 Mar 2024 by OriginalGriff

You are using a free version of a paid-for product: you need to contact the manufacturers (C# / VB.NET PDF component - GemBox.Pdf[^]) to find out if the free version has quality restrictions as well as page count restrictions. We don;t provide...

How to change 9 digit uploaded data into 10-digit number in angular

26 Mar 2024 by Pete O'Hanlon

There are a few ways you can accomplish this. If you are using a version of ES that's high enough, you can use padStart[^] (this is available from ES2017 onwards). If you don't have that available, you can write your own easily...

How to change 9 digit uploaded data into 10-digit number in angular

26 Mar 2024 by techno pack

Hi Team, I am totally new to angular. I have angular UI where we upload a .CSV file with 6 columns and their respective data, so before I invoke .net API , I need change If the 1st column has data with 9 digits then we need to change to 10 digits...

I need help to visualize results from K-mean clustering

26 Mar 2024 by Pete O'Hanlon

The easiest way to do this would be to output your results into a scatter plot. There are many different graphing libraries available that you could use. As I don't know what technology you are using under the covers...

I need help to visualize results from K-mean clustering

25 Mar 2024 by Bodan Temelkovski

I'm developing a C# program using ML.NET for K-means clustering. Currently, I'm testing it with a modest dataset featuring penguin characteristics. However, as I progress, I anticipate working with a large dataset containing customer information...

ProtectedJson: Integrating ASP.NET Core Configuration and Data Protection

24 Mar 2024 by Federico Di Marco

An improved JSON configuration provider that allows partial or full encryption of values in appsettings.json

How to fix an unknown provider error in tscript in a .NET project?

23 Mar 2024 by Graeme_Grant

I am not an Angular developer. However, you have a Dependency Injection error according to: [$injector:unpr]. Googling you error message Error: [$injector:unpr] Unknown provider[^] confirms this. Check the links in the search results for more...

Microservices using ASP.NET Core, Ocelot, MongoDB and JWT

23 Mar 2024 by Akram El Assas

Microservices sample architecture using ASP.NET Core, Ocelot, MongoDB and JWT

Test-Driven Development in C#

23 Mar 2024 by Akram El Assas

TDD in C# through a simple example

Challenges in Migrating ASP.NET Apps to Containers #3 – OpenSSL Issues

22 Mar 2024 by Mohammad Elsheimy

Configuring OpenSSL minimum version and legacy renogetiation

How Much Can Sqlite Handle? Multiple Threads Concurrently Inserting Into Sqlite

22 Mar 2024 by raddevus

An informal study of the Sqlite database and how many concurrent inserts it can handle. Will help you decide if you want to use Sqlite in your projects.

How to fix an unknown provider error in tscript in a .NET project?

22 Mar 2024 by xTMx9

Good day! I am facing an issue with my .net web app. I am working on an app with 2 modules that existed for a long time. I'm using angularJS and typescript for frontend. For reasons, 1 of these modules had to be disabled. This has created an...

Building a Plugin Architecture with Managed Extensibility Framework

22 Mar 2024 by Nicolas DESCARTES

How to build a plugin architecture in C# ?

JavaScript Event Calendar for Resource Scheduling

19 Mar 2024 by Dan Letecky

Weekly HTML5 event calendar with CSS themes, drag and drop support, date navigator. PHP and ASP.NET Core REST API backends.

How can I detect if my observation collection changed in VB.NET ?

19 Mar 2024 by Graeme_Grant

I am not sure what you are trying to do however I'll show you how to handle each item in the ObservableCollection. The Item class needs to implement the INotifyPropertyChanged Interface (System.ComponentModel)[^]. Microsoft provide a sample: How...

Why is the WMI win32_process commandline property null for only some processes of non-adminusers?

18 Mar 2024 by Dave Kreskowiak

Simple. Windows Security considers most command lines a security risk to be seen by normal users. No, there is nothing you can do about it. Normal users can see the command lines for processes they launch themselves, but not for System, Local...

Why is the WMI win32_process commandline property null for only some processes of non-adminusers?

18 Mar 2024 by Saumya Chattopadhyay

Hello Fellas, I have created a non-admin user, and trying to get details of Win32_Process but i'm either not getting any value or incorrect value for commandLine argument. I followed below steps to create the non-admin user and to give...

How do I link two lists together by observable collection in VB.NET ?

17 Mar 2024 by Sh.H.

Hi guys Here we have listORG with 3 fields: Idx , Etude , Name ---------------------------------- 1 Etude1 John 2 Etude2 John 3 Etude3 John 4 Etude4 John 5 Etude5 Merry...

How can I detect if my observation collection changed in VB.NET ?

17 Mar 2024 by Pete O'Hanlon

You cannot tell if an object has been changed using an ObservableCollection. The way to do this is to use INotifyPropertyChanged and raise the PropertyChanged event whenever you change the value in a property.

How can I detect if my observation collection changed in VB.NET ?

17 Mar 2024 by Sh.H.

Hi folks. I have an Observation Collection. I used event CollectionChanged. But this event only raises when new item added, or an item deleted. So how can I detect if an item edited? (And ofcourse, it would better also to detect which item got...

How do I link two lists together by observable collection in VB.NET ?

17 Mar 2024 by Graeme_Grant

You would use a CollectionViewSource and use grouping. I assume that you are using WPF. Here is a sample: How to: Sort and Group Data Using a View in XAML - WPF .NET Framework | Microsoft Learn[^]. Hereare some more things that you can do with...

How do I link two lists together by observable collection in VB.NET ?

16 Mar 2024 by Gerry Schmitz

You don't need an ObservableCollection to "count"; but you can substitute if you want. public class Org { public int Idx; public string Etude; public string Name; } static List _listOrg = new...

Error message-exception/the request was aborted: could not create SSL/TLS secure channel

15 Mar 2024 by Member 16222935

The host is saying to fix the issue at our end as their network team as given a log in which instead of certificate they are receiving the fin packet. And we are not able to find out the issue.

Error message-exception/the request was aborted: could not create SSL/TLS secure channel

14 Mar 2024 by Pete O'Hanlon

The error generally indicates that the server does not have a valid certificate associated with it and you are making a request to a secured endpoint, or the server is not setting the TLS version. If the endpoint belongs to you, make sure to add...

Error message-exception/the request was aborted: could not create SSL/TLS secure channel

14 Mar 2024 by Member 16222935

When I am trying to hit a post API request from my source code i am getting this error, when tried troubleshooting so it is found that by the host that instead of sending certifcate chain we are sending fin packets. But in code we are not able to...

How do I link two lists together by observable collection in VB.NET ?

12 Mar 2024 by OriginalGriff

There are problems here with what you want to do: you can't use a single ObservableCollection for two different lists, and while you could put all the items from both into a weakly typed ObservableCollection and cast them appropriately when you...

How to show subtitle on video like adobe premiere in VB.NET and C#?

9 Mar 2024 by Andre Oosthuizen

Another solution will be to use the 'DispatcherTimer' control to sync your titles - C# DispatcherTimer properties[^] Your code will look like the following, adjust the 'SubtitleRecord' class and initialization parts based on your actual data in...

How to show subtitle on video like adobe premiere in VB.NET and C#?

8 Mar 2024 by OriginalGriff

That's complicated, because the user can pause, fast forward, or rewind at any time, and you need to keep the subtitles in sync with the video or it will just get very confusing. Probably your best bet is to use the industry standard .SRT file -...

How to show subtitle on video like adobe premiere in VB.NET and C#?

8 Mar 2024 by Sh.H.

Hi guys Here is a list with 3 fields: StartTime , EndTime , SubtitleText There is almost 1000 numbers in the list. So I have a VideoElement which plays the video, and I made a TextBlock on it to show this list as its subtitle. Could you please...