Authorization in ASP .NET Core Razor pages

I am unable to implement policy-based authorization in ASP .NET Core for an action on a razor page. I read through [this comprehensive document on authorization](https://learn.microsoft.com/en-us/asp...

13 Aug at 12:35

Visual studio 2019 go to definition and Intellisense not working

I have noticed a weird issue with Visual Studio 2019 v16.0.1 the IntelliSense about "Using directive is unnecessary" normally grey is missing and type reference suggestion for missing using is not wor...

When does IDE0063 dispose?

I'm trying to understand this C# 8 simplification feature: > IDE0063 'using' statement can be simplified For example, I have: ``` void Method() { using (var client = new Client()) { ...

12 Aug at 14:24

ServiceStack ServiceStack.Auth.OrmLiteAuthRepository

All of a sudden I got the following error message when I try to run my web application. "Method 'GetRolesAndPermissions' in type 'ServiceStack.Auth.OrmLiteAuthRepository`2' from assembly 'ServiceStack...

12 Aug at 09:0

ASP.Net Core + Swagger - Actions require an explicit HttpMethod binding for Swagger 2.0

I have a project with following structure: ``` Controllers/ - Api/ - UsersController.cs - HomeController.cs Startup.cs ``` where looks like this: ``` namespace MyProject.Api.Controllers { ...

How use ImageSharp(Web) to compress / mutate stream with images(IFormFile)

I am trying to compress image(usually around 5-30) quality / size with [ImageSharp.Web()][1] library, and I cant really understand how can I do that or what I am missing here. - Can I reuse the same m...

17 Jul at 08:37

Transactional annotation attribute in .NET Core

I am just curious, in Java, there is a `@Transactional` attribute which can be placed above the method name and because almost every application service method use's transaction, it may simplify the c...

7 May at 03:51

"There was an error running the selected code generator: 'The value -1 outside the acceptable range of [0,2147483647]. Parameter name :value''"

I am working on an ASP.NET MVC project and so far I had no problems with scaffolding any type of items until now. Every time I want to create a new controller or view, I get the following error messa...

xUnit assert two values are equal with some tolerance

I'm trying to compare the precision of two numbers with some tolerance. This is how it was being checked in nUnit: ``` Assert.That(turnOver, Is.EqualTo(turnoverExpected).Within(0.00001).Percent); ``` ...

28 Mar at 15:35

Hangfire - Multi tenant, ASP.NET Core - Resolving the correct tenant

I got a SaaS project that needs the use Hangfire. We already implemented the requirements to identify a tenant. - - - - `TenantCurrentService`- `DbContextFactory`- - - - I'm trying to stamp a T...

Project 'ClassLibrary1.csproj' targets 'netstandard2.1'. It cannot be referenced by a project that targets '.NETFramework,Version=v4.8'

I have some class library projects in targets `netstandard2.1`. When I referenced that to my WPF project in target `.NET Framework v4.8`, On building time I get an error: > Severity Code Descri...

.Rdlc Report in MVC project - Managed Debugging Assistant 'PInvokeStackImbalance'

I am so close to getting my last report up and running. I have not had this problem with any other reports. I am trying to create a report based off a database record. When I go to create the report b...

ASP Net Core 2.2 add locker icon only to methods that require authorization - Swagger UI

## Versions: - - --- ## What I currently have? I have implemented swagger in my Web API project. And I am using JWT authorization with `[Authorize]` attribute on the methods that require...

How to sort List<T> in c#

I've got a `List<Card>`, and I want to sort these cards So, I'm looking for a method to sort them with different criterias, like their `ID`, their `Name` ... ``` public class Card : IComparer { ...

3 Sep at 10:9

Defining OpenApi response schemas - particularly the example field - with ServiceStack.Api.OpenApi

When I generate an API spec on SwaggerHub, I can declare the schemas, including user-friendly examples, as follows: ``` components: schemas: Job: type: object required: - po...

How to know the jdk version on my machine?

I have recently uninstalled JDK 11 and installed JDK 8. For confirmation, I want to check which JDK is installed on my Windows 10 machine. I typed `java -version` on cmd then get the error message > j...

16 Feb at 15:27

How to use environment variables in unit tests (.net core)

I have got a method that I am trying to test which uses environment variables from my "local.settings.json" ``` private static string _environmentVar = Environment.GetEnvironmentVariable("envirnomen...

5 Aug at 13:29

How can I hint the C# 8.0 nullable reference system that a property is initalized using reflection

I ran into an interesting problem when I tried to use Entity Framework Core with the new nullable reference types in C# 8.0. The Entity Framework (various flavors) allows me to declare DBSet properti...

Could not load file or assembly Microsoft.VisualStudio.Coverage.Analysis in Visual Studio 2019 16.2

I recently installed VS2019 Prof 16.2 and experience following error when loading `.coverage` files: ``` Microsoft Visual Studio Exception was thrown: Could not load file or assembly 'Microsoft.Visua...

How to install Font Awesome in ASP.NET Core 2.2 using Visual Studio 2019

I am struggling to find any up to date installation guide for installing Font Awesome in ASP.NET Core 2.2 I've tried a manual file import to the project folder directory, then tried the NuGet package...

Removing object from array using hooks (useState)

I have an array of objects. I need to add a function to remove an object from my array without using the "this" keyword. I tried using `updateList(list.slice(list.indexOf(e.target.name, 1)))`. This re...

21 Dec at 22:51

ServiceStack OrmLite OrderBy on joined table columns

I wish to make an OrderBy statement in OrmLite, using data from multiple joined tables in my query: ``` myQuery.OrderBy<MainTable, SubTable>((m, s) => m.Col1 < s.Col2) ``` just as you can with OrmL...

3 Aug at 10:0

How do I specify "any non-nullable type" as a generic type parameter constraint?

The post is specific to C# 8. Let's assume I want to have this method: ``` public static TValue Get<TKey, TValue>( this Dictionary<TKey, TValue> src, TKey key, TValue @default ) => src.TryGe...

Net Core: Execute All Dependency Injection in Xunit Test for AppService, Repository, etc

I am trying to implement Dependency Injection in Xunit test for AppService. Ideal goal is to run the original application program Startup/configuration, and use any dependency injection that was in S...

7 Aug at 04:49

C# Enums and Generics

Why does the compiler reject this code with the following error? (I am using `VS 2017` with `C# 7.3` enabled.) > CS0019 Operator '==' cannot be applied to operands of type 'T' and 'T' ``` public cl...

2 Aug at 09:47