Questions tagged [asp.net-core]

A free, open source and cross platform web development framework for building .NET web applications.

38 questions with no upvoted or accepted answers
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286 views

Onion Architecture: Should Service Layer contain DB Context?

In Onion Architecture, we have repository layer which conducts Crud Operations (simple insert, delete, update). (Applying Entity Framework with database) Onion Architecture Additionally , we have ...
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0answers
176 views

Clean Architecture - What is the difference between Use Cases and Core Services?

I'm trying to apply Clean Architecture to a simple ASP.NET MVC Core app by following Microsoft's ASP.NET architecture guidelines and their eShopOnWeb sample project. In the standard Clean ...
3
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2answers
194 views

Queueing async code to execute later

I have a website with basic crud operations that involve data and photos. I also need to extract the metadata for the photos that are being uploaded. My original implementation did not have var puts =...
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0answers
376 views

Design a Windows Service with self-hosted ASP.NET Core Web Services and UPD port listeners

I'm designing a software platform in automation that is responsible of many different tasks like: Core functions Driver interface for machines UDP listener for machine messages from PLC UDP listener ...
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0answers
75 views

Extending IdentityUser with nullable foreign key to another IdentityUser

I'm working on a framework which builds on .net core Identity. Let's say I wanted to extend the IdentityUser<TKey> class with a ParentUserId property while the developer should still be able to ...
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0answers
47 views

Correct method for handling edit/update scenario in repository pattern

I have a repository pattern employed in my .NET Core 2.1 project. While implementing the edit/update scenario, I have a doubt. My domain: public class Component { public int Id { get; set; } ...
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0answers
1k views

Where should I put my enums and interfaces?

I have an asp core MVC project for a college and I would like to implement a timetabling feature. To see if I could successfully even generate a dynamic HTML timetable, I started playing around in a ...
1
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0answers
651 views

What is the “recommended” way of using Asp.Net core, Angular, and OpenID-Connect

I mainly just want a lead in a direction with this. I'm not asking about specific frameworks to use, even if I mention them, just how it's supposed to work. I am trying to get an understand of how ...
1
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0answers
36 views

Azure setup question about multiple sites built from the same codebase

My website is running on Azure and I deploy via the Deployment slots feature. When code gets pushed to my production branch, my "staging" site gets the code, I check to make sure it's ok, then I do ...
1
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0answers
486 views

Multi-Tenant & Multi-Object Permision Suggestions

I am looking for suggestions/examples on how to setup permissions for my project. I am using ASP.NET Core 2.0 with EF Identity 2 (on one server) and will be using IdentityServer4 (secondary server) as ...
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0answers
296 views

Getting a route from MethodInfo in ASP.NET Core

Is it possible that given a MethodInfo object, i can somehow figure out what the MVC registered route would be for that method? I've tried something along the lines of checking if the MethodInfo has ...
0
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1answer
30 views

What's a good liveness probe for a Hangfire background job server?

We're in the process of moving everything to K8s and one of our applications is a small .NET Core 2.2 console app that runs a Hangfire background job server. At the moment the app runs as a Windows ...
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45 views

Which authentication should be used for external users (not registered with the system)

I'm working with a project that uses ASP.NET Core 2.2. The main solution contains different projects, including APIs for a mobile application, APIs to integrate the system with third parties, a web ...
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28 views

RabbitMQ consumer for multiple services

I want to create single consumer application for multiple queues. I want to store queue names in config file, and stop listening to queues/exchanges that were removed from it(and start listening to ...
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0answers
41 views

c# Asp Net Core Identity divide the frontend from the backend

I have a question about the architecture of my IdendityProvider for User authentication. For security, I would divide my frontend exposed on the internet from backed that is internal to my network ...
0
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0answers
41 views

Is it the right pattern for Razor Pages' private methods to return IActionResult to handler?

Is this a good code pattern in ASP.NET Core Razor Pages, for private methods to return IActionResult to the calling handler? // Public handler public IActionResult OnGet() { var result = ...
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0answers
99 views

Is ASP.NET Core Identity a leaky abstraction?

As far as I know, the DBContext or underlying persistance technology should be only contained inside the Data layer. Also, it feels very wrong to me to have identity package inside the user ...
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0answers
36 views

Registering dependency implemented in separate assembly with shared interfaces

Situation: I have a project with a Business Layer (WizBang.BL) that contains nearly all of my application logic. It communicates with a Data Layer (WizBang.Data) that contains by entity classes and ...
0
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1answer
115 views

Call library functions with varying number of inputs while keeping API simple

For a ASP.NET Core application, I'm using a library which performs calculations using objects that have a similar interface but their constructors use different inputs. The inputs are market prices ...
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0answers
42 views

DDD with web api, how to correctly display error messages that caused by domain to the client?

I asked a question about duplicate validation in domain or application layer. Now, I decided to put all the business rules in the domain layer. I have a value object like this, it has a method for ...
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0answers
140 views

API Class Input and Paging Specification Pattern in Net Core

I was reading following website, and created a PageModel and Specification pattern. Question is should I merge these two for good practice or keep separate? The PageModel will accept following ...
0
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2answers
170 views

Hosting a standalone .Net Core Web Application

We've created a .Net Core Web Application and are deploying it as a stand-alone exe. The main reason for deploying it stand-alone was to not be dependant upon the version of .Net Core installed on the ...
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0answers
86 views

How can I economically scale to 100+ instances of my .Net Core app without using 1 container per instance?

Currently I have a .NET core application, which fires up a new thread to hold each customer account. Each thread instance: Is long running for many months or more Holds open SignalR Websockets and ...
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16 views

how to work with variable data structures and templates

I need users to be able to create an organization which will have some preset fields such as Name, Address, and Type. But depending on the type, the organization can have type-specific fields such as ...
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23 views

Difficulty understanding the purpose of ViewComponents in MVC

I've thrown some of these into my new MVC project for pages where I need 'widgets' on the screen that are on multiple pages. But I'm thinking of scrapping them and using RenderAction instead. All my ...
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0answers
154 views

Tradeoffs between Testability and Performance when filtering using SQL vs LINQ

My team has recently decided to adopt the CQRS pattern similar to the one used in the famous Microsoft EShopsOnContainers repository. In this solution, the queries are made in Query classes using ...
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27 views

Authentication, bussiness logic and several entities in asp.net core

I'm working on an asp.net core application, using Identity as authentication/authorization management. Depending on the role the user can do "some thing", this is the normal way of authorization. But ...
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542 views

EventSourcing / CQRS Implementation with ASP.NET Core WebApi and Azure Cosmos DB

I was looking for an easy implementation of the Event Sourcing and CQRS Pattern in ASP.NET Core using Azure Cosmos DB as Event Store. As I couldn't find anything appropriate I decided to write a ...
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36 views

Asp.Net Core: creating files in background

I have a web app with SPA client. When user requests a report, that request should create an excel or pdf file in background and notify user via SignalR. I guess I need to save that file somewhere ...
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124 views

Authenticated ASP.NET Core MVC site consuming web API

I have an ASP.NET Core 2.2 MVC site, that uses Facebook as an identity provider. Users can click the login button, they are redirected to Facebook to enter their credentials, and are then redirected ...
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155 views

Why do I define my Queries, Data, and Mutation as Singleton when using GraphQL in .NET Core?

Why do I define my Queries, Data, and Mutation as Singleton when using GraphQL in .NET Core? From the doc's dependency injection page: public void ConfigureServices(IServiceCollection services) { ...
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1answer
77 views

C# Separate Online Store into Different Solutions and Nugets

I am creating an Online Shopping Cart store. It is built through Net MVC Core. There is a Front End View website: html, css, razor. Then we have backend code design for Customers: including shopping ...
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74 views

Should I use CQRS in this case?

I'm building web API. I have a problem where input differs from the output, for example, input expects just the id and output returns entire object. Also, there are few things specific to the output ...
0
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1answer
356 views

Architecture to share logic across MPA and SPA applications

What in your opinion is good practice to handle the case where I want to have re-usable and shared logic that collects and returns my data from the database? For example I have Multi Page ...
0
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1answer
260 views

Does Asp.Net Identity worth the overhead?

I'm creating web applications using Asp.Net Core Identity with N-Tier architecture. Lately I've been discovering many properties of this library that I didn't know before as I need to configure the ...
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1answer
41 views

What is a simple implementation of onion architecture for C# ASP.NET Core WebAPI and SQL db that is not full DDD and CQRS?

I'm a programming teacher. My students learn structured and then object oriented programming in JavaScript and C#. They learn SQL, MS SQL Server, Dapper and EntityFramework Core. After this they ...
-2
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1answer
111 views

How to migrate an existing ASP.NET MVC site to ASP.NET MVC Core - specifically on authorization

I am in the process of upgrading an existing website to ASP.NET Core 2.1. The goal is simplification and ease of maintenance. Existing site is using: EF and .NET 4.6.2 A [Users] table in SQL Server ...
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1answer
152 views

Use Angular2 for website and API for mobile application with single Web API project

We are working on a project to develop a solution with a large number of modules in which the client wants a website as well as mobile application. As a team we're working using ASP.NET MVC and Web ...