IConfiguration does not contain a definition for GetValue

After moving a class through projects, one of the `IConfiguration` methods, `GetValue<T>`, stopped working. The usage is like this: ``` using Newtonsoft.Json; using System; using System.Net; using Sys...

Relationship between C# 8.0, NET Core 3.0 and Visual Studio

The article [Building C# 8.0](https://blogs.msdn.microsoft.com/dotnet/2018/11/12/building-c-8-0/) states > The current plan is that C# 8.0 will ship at the same time as .NET Core 3.0. However, the fe...

14 Jul at 03:15

ServiceStack Redis client Get<T>(key) removes quotes from string data

I am using ServiceStack.Redis library to work with Redis. To start with, I have implemented [this](https://www.codeproject.com/Articles/1120038/A-simple-Csharp-cache-component-using-Redis-as-pro) solu...

Cannot load System.ComponentModel.Annotations from OrmLiteConfigExtensions (ServiceStack.OrmLite.Core)

I get a runtime error when using `ServiceStack.OrmLite.Core` package (5.4.1) and trying to get a `ModelDefinition` (`ServiceStack.OrmLite.ModelDefinition`) by doing: ``` var model = ModelDefinition<T...

.NET Core include folder in publish

I have the following folder structure for my .NET Core 2.1 project: [](https://i.stack.imgur.com/rpKJc.png) How can I include folder `AppData` and all of its subfolders and files when I publish the ...

19 Feb at 09:35

How to use if-else condition on gitlabci

How to use if else condition inside the gitlab-CI. I have below code: ``` deploy-dev: image: testimage environment: dev tags: - kubectl script: - kubectl apply -f demo1 --record=true ...

19 Feb at 08:11

Servicestack Session is null only when using JWT

This fails on SessionAs in the baseservice in Postman when I authenticate via JWT. But when I use Basic Auth it works fine. Anyone know why? Apphost ``` Plugins.Add(new AuthFeature(() => new CustomU...

19 Feb at 05:51

HTTP Error 502.5 - ANCM Out-Of-Process Startup Failure after upgrading to ASP.NET Core 2.2

After upgrading my project to ASP.NET Core 2.2, I tried to run the application (locally of course) and the browser displayed an error message like in the below screenshot. [](https://i.stack.imgur.c...

19 Feb at 03:4

Error setting X509Certificate2 PrivateKey

I am migrating a .NetFramework 4.6.1 library to a .NetCore 2.2. But i am unable to set x509certificate.PrivateKey as shown below. I have read that may be due to the RSAServiceProvider but i am unaware...

5 May at 18:38

Why am I seeing net::ERR_CLEARTEXT_NOT_PERMITTED errors after upgrading to Cordova Android 8?

After upgrading to [Cordova Android 8.0](https://cordova.apache.org/announcements/2019/02/16/cordova-android-release-8.0.0.html), I am seeing `net::ERR_CLEARTEXT_NOT_PERMITTED` errors when trying to c...

12 Mar at 21:33

Where i should put my DTOs in clean architecture?

[](https://i.stack.imgur.com/LCRQQ.png) Need to implement the clean architecture and struggling with DTO concept. As I understand, i can't use my domain objects in presentation layer (asp mvc) inste...

18 Feb at 13:13

Uncaught TypeError: Cannot destructure property `name` of 'undefined' or 'null'

Object destructuring throws error in case of null object is passed ``` function test ({name= 'empty'}={}) { console.log(name) } test(null); ``` > Uncaught TypeError: Cannot destructure property...

Error installing geopandas:" A GDAL API version must be specified " in Anaconda

This error raised while installing geopandas. I've looking for its solution on the web, but none of them really explain what happened and how to solve it.. This is the full error: ``` Collecting geop...

17 Feb at 15:20

Self-referenced generic parameter

For example I have the following classes: 1. ``` class MyClass1 { public MyClass1 Method() { ... return new MyClass1(); } } class MyClass2 { public MyClass2 Method()...

17 Feb at 20:44

Formatting rule to have blank line between class member declarations

Micrsoft provides bunch of coding settings for EditorConfig [.NET coding convention settings for EditorConfig](https://learn.microsoft.com/en-us/visualstudio/ide/editorconfig-code-style-settings-refe...

19 Feb at 05:45

What does null! statement mean?

I've recently seen the following code: ``` public class Person { //line 1 public string FirstName { get; } //line 2 public string LastName { get; } = null!; //assign null is poss...

8 Apr at 09:31

Serilog not writing to File (.net core 2.2)

I am writing a web service that is using Serilog. I was having problems getting files to write out (but console logging worked). I noticed that the setup changed when .net core 2.0 came out based on [...

15 Feb at 18:28

ServiceStack OrmLite-Mysql Compability (5.4.0) (.net c#)

We have a solution consisting of both .net Framework (4.7.2) and .net Standard (2.0) projects. According to this page: [http://docs.servicestack.net/templates-corefx#reference-core-packages](http://do...

CSV to object list

I am currently using ServiceStack.Text to de-serialize CSV to list of objects. My Model ``` public class UploadDocument { [DataMember(Name = "Patient")] public string Patient { get; set; } ...

15 Feb at 04:20

How can I use C# 8 with Visual Studio 2017?

I'd like to use C# 8.0 (especially ranges and non-nullable reference types) in Visual Studio 2017. Is it possible?

How to create an Expression builder in .NET

I have written some code to allow filtering of products on our website, and I am getting a pretty bad code smell. The user can select 1-* of these filters which means I need to be specific with the `W...

What does " yarn build " command do? Are " npm build " and "yarn build" similar commands?

What does `yarn build` command do ? Are `yarn build` and `npm build` the same? If not what's the difference?

3 Feb at 12:37

IRequestHandler return void

Please see the code below: ``` public class CreatePersonHandler : IRequestHandler<CreatePersonCommand,bool> { public async Task<bool> Handle(CreatePersonCommand message, CancellationToken can...

12 Feb at 11:20

Push method in React Hooks (useState)?

How to push element inside useState array React hook? Is that as an old method in react state? Or something new? E.g. [setState push example](https://stackoverflow.com/questions/41052598/reactjs-arra...

25 Feb at 06:24

Is there an explanation for inline operators in "k += c += k += c;"?

What is the explanation for the result from the following operation? ``` k += c += k += c; ``` I was trying to understand the output result from the following code: ``` int k = 10; int c = 30; k +...

14 Feb at 01:0