C#

We are a programming server aimed at coders discussing everything related to C# (CSharp) and .NET.

C#

We are a programming server aimed at coders discussing everything related to C# (CSharp) and .NET.

9/4/2024

✅ Q about the "?" symbol when declaring vars

Hello everybody ,I have seen some c# vidoes where people declare variables with "?", for example "int?","bool?" , I have asked copilot what does it mean and he said that its just "normal variables" but they are special in that they can also store Null . my question is : how accurate is his answer and in what case/context will I use :"type?" instead of "type" thanks...

dreadfullydistinct

9/4/2024

✅ Covariant return type properties

Am I missing something - I thought that property return types could be covariant if they were readonly. So why does this not compile? ```cs public abstract class C {...

BalthazarArgall

9/4/2024

How do I reference either the x or y field of a Vector2 depending on some condition?

Hello. I'm resizing a grid, to do so I use two functions, the first resizes the grid in the X axis, the second on the Y axis. I would like to merge them but I have difficulties coming up with a solution. My main issue is that I would need to have some way to tell the method to either use (and update, very important) the x or y field of a Vector2 depending on some boolean (if changeXAxis = true then use coordinates.x else use coordinates.y, if it makes sense). I have tried multiple things, for example setting variables with a ternary operator like so:...

Ploot

9/4/2024

✅ AddHttpClient and AddHostedService

I have a hosted service that I register with my DI as so serviceCollection.AddHostedService<ExampleService>() and everything works fine. However I now need this service to use it's own HttpClient. That seemed like no issue, Just add serviceCollection.AddHttpClient<ExampleService>(x => x.Timeout = Timeout.InfiniteTimeSpan) and I should be good to go, or so I thought.. Everything resolved correctly and the program ran, except for the fact that the injected HttpClient did not in fact have infinite timeout. A quick breakpoint check later and i find that the configuration action isn't triggering, or from what I found online, that client isn't used at all and it's instead falling back to the standard HttpClient that AddHttpClient adds for everything that isn't the targeted type....

antalya

9/4/2024

✅ Obfuscate

How do I assign an OBF to an application I made in C#? When I used ConfuserEx, I couldn't assign an OBF because I was using Guna2. Is there another application?

Denge

9/4/2024

Testing multi layered .NET application

Hey, I'm new to C#/.NET and i'm currently making my first project. This project has a Controller - Service - Repository structure. Right now I'm trying to write tests for my controllers but I'm facing a problem trying to mock my service. In the setup of my mock, i pass the data it should return, but the result is null (without the returned data) ...

Jimjam#9770

9/4/2024

How do I run/start my code?

I've practically only ever used Python, so I'm unsure how to run this code on Visual Studio Code? Sorry if this is really basic, I just genuinely am so stressed because I need to get this done asap (rocky) and I'm just a bit stuck right now 😭...

Martina Nordkvist

9/4/2024

Costom ScrollViewer Wpf

I have made a slider that looks like the image below but I want to know if it’s possible to make the exact same thing but vertical and a ScrollViewer instead of a slider. I have tried a lot but not succeeded. Need it for a Listbox. I like that design a lot

Maujey

9/4/2024

How to use ExtensionMethods for structs

yatta

9/4/2024

✅ ObservableCollection.Add() takes too long.

As the title and the image pretty much have explained it, ObservableCollection takes 4 second just to add a record, is there anyone also has this problem, may I ask for some suggestion ?

cocKy

9/4/2024

Default value to textarea in .net core MVC

<textarea asp-for="Description" class="form-control">@ViewBag.Product.Description</textarea>

<textarea asp-for="Description" class="form-control">@ViewBag.Product.Description</textarea>

Based on the example above, I want to add a default value to the textarea since it is a page for user to update the item....

Cavecrush

9/3/2024

Help on how async/await works

Hi everyone, I am currently learning about asynchronous programming in c# and have been reading the documentation at https://learn.microsoft.com/en-us/dotnet/csharp/asynchronous-programming/. I understand how the usage of await will pause execution until the task completes, but I dont fully understand where execution goes after hitting an await statement. The documentation mentions `The await keyword is where the magic happens. It yields control to the caller of the method that performed await,...

Boubou🗿

9/3/2024

Help about UI design for a code editor

Hi everyone, i am making a code editor but i want to enhance my design because it looks old. I need some help. Thanks !

hutoanhill

9/3/2024

✅ using using to clear up ambiguous references.

I've to two method called index: Microsoft.EntityFrameworkCore.Index System.ComponentModel.DataAnnotations.Schema.Index i don't use the 2nd one. I want every mention of index to be interpreted as the first one....

Sun「無用」

9/3/2024

Class with same name as namespace

In the same app still (Ilanos), in my Ilanos.Application proj I have a lot of classes that are supposed to use the Joke class. However, for the sake of organization, I'm separating them like this: ``` |- Ilanos.Application |- Mappers |- Joke...

shahinjabbar

9/3/2024

hey guys. please take a look at this SO question. thanks

https://stackoverflow.com/questions/78944916/how-to-hash-using-md5-oracle-blob-in-c-sharp-using-linq2db

Sun「無用」

9/3/2024

Unable to create DbContext

I'm trying to create by db tables right now, still in the start of a project. I have a ApplicationDbContext in my Infrastructure project and I'm running dotnet ef migrations Initial, that's all. Project is public for now, could be seen here (yes, I know it's messy, I don't like clean architecture, I mostly don't know how to do it, not my style of coding) ...

Neeyo

9/3/2024

Access database field in one to many relationship in asp net core

In my example I have Polls and PollOptions tables, I can access PollOptions.Poll table but not the other way around

V0FBU1VM

9/3/2024

Caching?

I have been meaning to ask a question about caching. How do you determine what data to cache and when?

hutoanhill

9/2/2024

Trying to scaffold a MySQL database with Rider

I am trying to scaffold a MySQL database. I am using Rider. I found this article on the MySQL website: https://dev.mysql.com/doc/connector-net/en/connector-net-entityframework-core-scaffold-example.html but the commands it uses seems to require Visual Studio which i am not using. ...

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C#

We are a programming server aimed at coders discussing everything related to C# (CSharp) and .NET.

C#

We are a programming server aimed at coders discussing everything related to C# (CSharp) and .NET.