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PDF417 Barcode Encoder Class Library and Demo App Ver. 2.2

by Uzi Granot

The PDF417 barcode encoder class library is written in C#. The target framework is .NET Framework (net462) and .NET Standard (netstandard2.0). The encoder library allows you to create a PDF417 barcode image from a text string or a binary (byte) array. Two demo/test applications are included.

MQTT – Message Queue Telemetry Transport Protocol with .NET Core

by JawadHasan

How to use MQTT Protocol in your .NET Core Applications

BusinessRulesEngine for .NET Applications

by Dan Ionescu (USINESOFT)

Complex cascade defaulting of properties on an object graph triggered by other property changes

Slickflow.NET Core Open Source Workflow Engine

by besley

Slickflow.NET Core Open Source Workflow Engine

Latest Articles

A Dynamic Where Implementation for Entity Framework

by Marc Clifton

Using EntityFramework Core and SQL Server to create a dynamic IQueryable filtering that is not susceptible to SQL injection attacks

A Lightweight Thread Safe In-Memory Keyed Generic Cache Collection Service

by Marc Clifton

Using a collection to manage caches instead of implementing discrete cache instances

The Remote InterOperability Platform

by Daniele Alberto Galliano

A guest OS for IoT devices, that can adapt easily to many different tasks

Cinchoo ETL - Converting JSON to XML with Namespaces

by Cinchoo

Tip to convert JSON to XML with namespaces using Cinchoo ETL

All Articles

.NET Standard

PDF417 Barcode Encoder Class Library and Demo App Ver. 2.2

8 Sep 2020 by Uzi Granot

The PDF417 barcode encoder class library is written in C#. The target framework is .NET Framework (net462) and .NET Standard (netstandard2.0). The encoder library allows you to create a PDF417 barcode image from a text string or a binary (byte) array. Two demo/test applications are included.

MQTT – Message Queue Telemetry Transport Protocol with .NET Core

19 Oct 2020 by JawadHasan

How to use MQTT Protocol in your .NET Core Applications

BusinessRulesEngine for .NET Applications

1 Dec 2019 by Dan Ionescu (USINESOFT)

Complex cascade defaulting of properties on an object graph triggered by other property changes

Slickflow.NET Core Open Source Workflow Engine

30 Nov 2019 by besley

Slickflow.NET Core Open Source Workflow Engine

Using Managed Extensibility Framework to Build a Modular Console Application

24 Jul 2019 by Sau002

This article takes you through a step by step journey of building a fairly large console application which is modular and also extensible by using the principles of Managed Extensibility Framework.

Excelsior! Building Applications Without a Safety Net - Part 3

20 May 2021 by Pete O'Hanlon

Third part of a series of articles where we build an application showing the entire thought process when writing it

Excelsior! Building Applications Without a Safety Net - Part 1

11 May 2021 by Pete O'Hanlon

First part of a series of articles where we build an application showing the entire thought process when writing it

.NET Core/Standard Auto Incrementing Versioning

23 Feb 2020 by Sacha Barber

How to get nice auto incrementing assembly versions inside your .NET Core/Standard projects

Volume Serial Numbers (like for Windows Partitions) Applied to MS Office Files

28 Oct 2019 by stc.reseller

Helpful tips in labeling Office files or how to make Office file changes statistically visible, in one single step

C# how to PGP encrypt a csv file using bouncy castle?

16 Jul 2021 by Richard MacCutchan

See bouncycastle.org[^].

Count string using regex pattern

21 Jan 2022 by Patrice T

Quote: I would like to use ? for any char in between string if it appear on search textbox. You need to learn Regex better, '?' is not what you think it is. Try add.ress Count is 6, "Add.ress" is rejected because of uppercase. Just a few...

regular-expression

How can I connet weighing scale through RS232 usb cable

28 Aug 2022 by CPallini

You should read the documentation of the device and implement the specified protocol. Without knowing more details, we cannot give better help.

How can I connet weighing scale through RS232 usb cable

28 Aug 2022 by OriginalGriff

To add to what Carlo has - correctly - said ... Don't start by writing code - there are far too many things which can trip you up, and if you throw together code to see if it works, you have no idea why it failed if it doesn't work immediately....

How to create a folder with name curent date and time then save an image to the created folder in C# ?

22 Dec 2022 by Dave Kreskowiak

This is REALLY EASY to diagnose. Set a breakpoint in the code that generates the filepath for the image. Run the code. When the debugger stops the code at the breakpoint, hover the mouse over the variable you're building the filepath in. Does...

'System.data.sqlclient' wasn't found in the list of registered .NET core data providers.'

18 Jun 2021 by NightWizzard

I had the same problem - reason: with NET 5 the SQL client library isn't included by default. You habe to install it first with the nuget manager and for NET 5 it's no longer located in the main namespace "System" but in "Microsoft".

.net standard assemblies in .NET framework apps

5 Nov 2021 by #realJSOP

Right after I posted this, I found the answer. When I originally created the Common assembly, I targeted .Net Standard 2.1 (thinking the newest is the best way to go). While googling my problem, I found out that .Net 4.7.2 only supports...

Converting azure angular datetime to .NET datetime

6 Dec 2023 by Gerry Schmitz

If you're working with (C#) "properties" (get; set;) you can add expressions that return different values based on context without having to introduce (major) "breaking" changes. ...

MVVM and Xamarin Forms

3 Dec 2019 by Xamarin Skills

In this post, I will cover what MVVM is and how it can be used from a pure .NET perspective by creating a basic MVVM framework from scratch.

.net standard microsoft.win32 does not contain openfiledialog()

14 Apr 2021 by Tobynate

I am trying to open the file dialog in my WPF application which is a .Net Core app and uses a .Net Standard Library where all my code lives. However, when I tried the OpenFileDialog() method which inherits from Microsoft.Win32 namespace, it says...

.net standard microsoft.win32 does not contain openfiledialog()

14 Apr 2021 by Richard Deeming

Looking at the "Applies to" section in the documentation, this dialog was never defined for .NET Standard: OpenFileDialog Class (Microsoft.Win32) | Microsoft Docs[^]: Applies to: .NET 5.0, 6.0 preview 3 .NET Core 3.0, 3.1 .NET Framework...

'System.data.sqlclient' wasn't found in the list of registered .NET core data providers.'

19 Jun 2021 by eweqee

I am developing .net core and angular web application. In this solution, we are calling the database using another class library in .net 5. So, When it coming to create a connection It says below Error: " 'System.Data.SqlClient' wasn't found...

I have a complex question which involves PHP and .NET and which .NET version is the one people ask on job descriptions as is speciafied only .NET

11 Oct 2021 by ralucaAdinaAvram

I have recently seen a few jobs with .net, and I haven't started yet a coding career, so I am trying my best to learn everything that would look good on my cv and that I would enjoy working with. I studied until now HTML, CSS and JAVASCRIPT and I...

.NET-Compiler-Platform

I have a complex question which involves PHP and .NET and which .NET version is the one people ask on job descriptions as is speciafied only .NET

11 Oct 2021 by Richard MacCutchan

For Web applications you need to learn ASP.NET | Open-source web framework for .NET[^]. However, there is a fairly steep learning curve and trying to gain experience from Youtube tutorials is largely a waste of time. You will also find that a CV...

.NET-Compiler-Platform

.net standard assemblies in .NET framework apps

5 Nov 2021 by #realJSOP

Using Visual Studio 2019 Building console app solution I have a solution with the following assemblies: - ConsoleAppCore - console app targeting .Net Core 5.0 - ConsoleAppFrame - console app targeting .Net Framework 4.7.2 - Common - library...

Count string using regex pattern

1 Feb 2022 by Timi_z

Hi, I'm trying to find a solution for the following task, but I’m stuck. Please help me find a solution. The code is working fine for counting exact string match, but what I’m trying to achieve is to find and count words if they are not same...

regular-expression

Count string using regex pattern

1 Feb 2022 by Timi_z

I found a solution. I have added for each loop and replaced the question mark with all the char I needed from the array each time.

regular-expression

Failed to install deb package make on ubuntu. Please help

8 Feb 2022 by DoingWork

Failed to Install Deb package maker for .netcore apps on ubuntu[^] or Is there any alternate package maker ? .Netcore version: .Net5.0 Ubuntu: 18.04.6 TLS VSCODE : 1.64.1 OS: Linux x64 5.4.0-96-generic What I have tried: I have successfully...

.NET-Compiler-Platform

Azure devops gives NuGet package restore error

28 Feb 2022 by jaideepsinh

NuGet package restore error for the solution which have a mix of .netcoreapp3.1 and .NETStandard 2.1 projects. I have multiple .net projects in one solution file and added references to each other projects. Some of the projects has .netcore 3.1...

How to save file to folder if excel cell contain embed object

9 Jun 2022 by ajay.raju531

Hi, I have an excel file and one cell of every row contain embed pdf file object and remaining cells contain string values. How to check if cell contain embed object then save that object file into folder and also save the file path and...

How to save file to folder if excel cell contain embed object

9 Jun 2022 by matblue25

See my earlier comment and check the link below for how to access OLEObjects in Excel from C#. OLEObjects

How can I connet weighing scale through RS232 usb cable

28 Aug 2022 by Member 11113497

My code how can i write code please help me anybody What I have tried: Public Class Form1 Dim SerialPort1 As IO.Ports.SerialPort Delegate Sub SetTextCallback(ByVal data As String) Private Delegate Sub...

How to get pdf from httpwebresponse

16 Sep 2022 by ajay.raju531

Hi, I am getting pdf from httpwebresponse, I have copied response stream to memory stream and converting stream data to base64 string using bytes array. and saving the base64 string data in database, if pdf contains plain text it is working...

How to upgrade from .NET core 2.1 to .NET core 5 ?

22 Oct 2022 by Dave Kreskowiak

Chances are you have a global.json file somewhere in directory path you ran the command in that is forcing the 2.x version of .NET. Select which .NET version to use - .NET | Microsoft Learn[^] global.json overview - .NET CLI | Microsoft Learn[^]...

How to create a folder with name curent date and time then save an image to the created folder in C# ?

22 Dec 2022 by OriginalGriff

We can't see your code, we can't access your HDD, and we can;t read your mind: we can't help you as a result! So, it's going to be up to you. Fortunately, you have a tool available to you which will help you find out what is going on: the...

How to keep 'assets' folder (somewhere? ) To be accessed by all of the other 40 web projects?

20 Feb 2023 by Richard MacCutchan

You can put the actual folder anywhere, a reasonable place would be a folder above all the project folders. You can then add references to it in each project that needs it; something like: Dev +--Assets +--Project1 -- include ..\Assets\... ...

How to keep 'assets' folder (somewhere? ) To be accessed by all of the other 40 web projects?

23 Feb 2023 by Koppula Ravi

- All the projects are in asp.net web forms using donet framework 4.7.2. - I have 40 over projects with the same project configurations ( All are web forms and framework is 4.7.2). - I have created a folder named 'Assets' and kept all my CSS...

How to keep 'assets' folder (somewhere? ) To be accessed by all of the other 40 web projects?

23 Feb 2023 by mtoha

I guess you need 1 project containing assets, that method is like CDN method. And then the project calling .js .css .jpg and all things using that project.. i.e. http://project-assets/css/site.css At iis you should filter that extensions is...

How can I add .NET framework 4.7.2 to a build_check.yml that accounts only for the .NET core

7 Jul 2023 by Member 13304618

I have a .NET solution that have several projects, built in .NET Core and in the .NET 4.7.2. All those projects are built and run fine on my local environment. However, when I push this solution to a GitHub, the build in the GitHub fails error...

.net 5.0 - system.servicemodel issues

1 Aug 2023 by Fydobas

Say I have a WinForms application that I want to port to WPF/.NET 5.0 - or 6.0, it doesn't matter in this case. Also say I am required to use a certain third party library that is used for sending data to another application via a SOAP service....

Converting azure angular datetime to .NET datetime

6 Dec 2023 by Z.C.M.

I'll apologize in advance for the length. This probably should have been a normal post in the appropriate forum. We have a web app with an Angular front end (as they said in 13th Warrior, I'd rather prefer a dragon), .NET Core 3.1 back end that...

A Lightweight Thread Safe In-Memory Keyed Generic Cache Collection Service

2 Apr 2023 by Marc Clifton

Using a collection to manage caches instead of implementing discrete cache instances

A Dynamic Where Implementation for Entity Framework

2 Apr 2023 by Marc Clifton

Using EntityFramework Core and SQL Server to create a dynamic IQueryable filtering that is not susceptible to SQL injection attacks

entity-framework

The Remote InterOperability Platform

9 Sep 2022 by Daniele Alberto Galliano

A guest OS for IoT devices, that can adapt easily to many different tasks

.NET Standard, What are the Alternatives?

19 May 2020 by Daan Acohen

An explanation of how to support multiple platforms in .NET development

3 Feb 2021 by Sergiy Stoyan

Application settings manager. Logger. Auxiliary routines.

CPPkg: Create Zips of Your Source Code From Visual Studio

9 Jul 2020 by honey the codewitch

Easily create zip packages from source code, suitable for upload on CodeProject

Cinchoo ETL - Quick Start: Converting CSV to JSON File

20 Oct 2021 by Cinchoo

Quick tutorial on converting CSV file to JSON file using Cinchoo ETL

An Open Source ORM Framework - Light.Data

22 May 2019 by aquila huang

Introduction of the open source project Light.Data

Image Canvas Border Editor

18 Jan 2020 by Marijan Nikic

Small tool for adding borders to image for canvas printing

Cinchoo ETL - Converting JSON to XML with Namespaces

27 Oct 2021 by Cinchoo

Tip to convert JSON to XML with namespaces using Cinchoo ETL

How to create a folder with name curent date and time then save an image to the created folder in C# ?

22 Dec 2022 by sahil ajmeri 2022

i want to create a folder with name curent date and time then save an image to the created folder in C# i have tried something but its creating folder but images are not saving in that folder Screenshot-58 — ImgBB[^] What I have tried: ...

'System.data.sqlclient' wasn't found in the list of registered .NET core data providers.'

19 Jun 2021 by NightWizzard

It's not a solution by code - you have to use the nuget manager in Visual Studio to add the reference.

How to upgrade from .NET core 2.1 to .NET core 5 ?

22 Oct 2022 by ahmed_sa

I work on visual studio 2019 when create new project with .NET core web application it display to me as .NET core 2.1 i need to create new project on visual studio 2019 with .NET core 5.0 so what i do to display .net core 5.0 when create new web...