C# 7.1 can't be published

I have ASP.NET Core C# web application. I made some changes that now use C# 7.1 features. I changed project version, so it compiles and runs fine. However, when I try to the project, I am getting an ...

C# Attribute hell - one class shared between mobile and server on two different SQL platforms

We share a single poco's with - - - Problem is the shared classes have become a mess. ``` [PrimaryKey, AutoIncrement] public int Id { get; set; } #if __MOBILE__ [Indexed] #else ...

How do I use HttpClient PostAsync parameters properly?

So I am working on writing an extension class for my project using HttpClient since I am moving over from HttpWebRequest. When doing the POST request, how do I send a normal string as a parameter? No...

How does the hard-coded ApplicationInsightsResourceId impact the gathering of AI data from resources in varying production levels?

I have an application to which I am trying to add in Azure Application Insights telemetry. I've been reading how I can modify the InstrumentationKey at runtime, to select a different telemetry target...

20 Jun at 09:12

Optional property class in typescript

I'm new to typescript. What is the utility of optional properties in typescript? And what is the difference between: ``` a?: number; a: number | undefined; ```

9 Jan at 21:15

How to make Sonarqube exclude a .NET (C#) project from coverage measures

Sonarqube allows for individual files to be excluded from code coverage by adding patterns in the key. This can be done on a project level by adding them in the UI and even in a .csproj file by speci...

What exactly happens when you call an async method without the await keyword?

I have a web server and there is a periodic job merges and send records (lots of request logs). ``` Task.Run(() => { while (true) { try { MergeAndPutRecords(); ...

26 Jul at 17:3

Angular File Upload

I'm a beginner with Angular, I want to know how to create Angular 5 , I'm trying to find any tutorial or doc, but I don't see anything anywhere. Any idea for this? And I tried [ng4-files](https://git...

7 Jul at 06:0

Ways to secure an anonymous Web API request

I have a (NOT ASP.NET Core) single page application with on the front end. My client (browser) talks to server through ASP.NET Web APIs. Now, the web application is on but . There is no login/ us...

31 Dec at 15:30

'react-scripts' is not recognized as an internal or external command

I've got a maven project, within which is JavaScript project cloned as a git sub-module. So the directory structure looks like `mavenapp/src/main/javascript/[npm project files]` Inside my package.json...

27 Aug at 08:14

Dynamically compile a class in App_Code while pre-compiling the rest of the project/library

ASP.NET has specicial application folders like [App_Code](https://msdn.microsoft.com/en-us/library/ex526337.aspx) which: > Contains source code for shared classes and business objects (for example, ....

How to configure "Shorten command line" method for whole project in IntelliJ

When I run tests I get the error "Command line is too long". It works if I set the "Shorten command line" method in the Run/Debug configuration to "JAR manifest" for the specific method or class, but...

27 Nov at 04:3

What does Debug.WriteLine() in C# do?

I was wondering what `Debug.WriteLine()` does. I see it all the time in many different codes, but I don't get what it's supposed to do. What I found out so far: > "Writes information about the debug t...

6 May at 00:54

Asp.net core 2 Prefix Routing

How to create prefixed routing for MVC CRUD operation. I am working on an application that requires admin and front-end. For the admin I want all route to point to `localhost:5000/admin/....` I have ...

Difference between client and server time ServiceStack

I have a web service, built on ServiceStack. It serves protobuf-net requests from window form users. I would simply like to know how to automatically get the user's machine Current Time (for every se...

21 Dec at 13:36

What's the difference between sizeof(T) and Unsafe.SizeOf<T>()?

First of all, a small disclaimer before the actual question: > I know there are a lot of closed/duplicate questions regarding the difference between the `sizeof` operator and the `Marshal.SizeOf<T>` m...

1 Aug at 18:21

System.ArgumentNullException: Value cannot be null, Parameter name: implementationInstance

I deployed .NET core mvc application in IIS, when I run app, the page show 502.5 error, I run command in powershell "dotnet D:\deploy\WebApp\WebApp.dll" ,this follow show detail error content: I know ...

11 Sep at 11:21

How to access Anaconda command prompt in Windows 10 (64-bit)

I had to install the 64-bit version of Anaconda with python 3.5 in Windows 10. I followed the default settings (`AppData/Continuum/Anaconda3`). However, after installation, I am unsure how to access t...

20 Dec at 22:22

Find max value of a column in laravel

The problem started because I have a table (Clientes), in which the primary key is not auto-incremental. I want to select the max value stored in a column database. Like this select, but with eloque...

11 Apr at 20:25

How to get DbSet from entity name in EF Core / .NET Core 2.0

I have a `DbContext` with several `DbSet<T>` properties: ``` public virtual DbSet<A> A { get; set; } public virtual DbSet<B> B { get; set; } public virtual DbSet<C> C { get; set; } ... ``` In certa...

10 Jun at 18:44

Selenium can't find chromedriver.exe

We're upgrading to .NET Core, and we have a crawling engine that uses Selenium for some tasks. We use `chromedriver.exe` and it works just fine in .NET 4.6.1. For .NET Core, we created a console app...

20 Dec at 16:13

C# and dotnet 4.7.1 not adding custom certificate for TLS 1.2 calls

I have the following C# code, constructing an https call with a custom certificate. When using Tls 1.1, the call works fine. When using Tls 1.2 the call breaks. I using curl, using tls 1.2 works fine ...

15 Jan at 07:45

JsonServiceClient returns reponse with correct attribute but empty value

I am trying to make a JSON request on an external service, that would look like this : GET request : ``` https://remotehost/path/mycount?foo=C&bar=21 ``` response : ``` {"count":1000} ``` for t...

20 Dec at 11:10

Does injecting ILogger<T> create a new logger each time?

On the logging samples in [the documentation](https://learn.microsoft.com/en-us/aspnet/core/fundamentals/logging/?tabs=aspnetcore2x), there is an example how to inject a logger into a controller: ```...

20 Dec at 08:38

Access Controller from ExceptionFilterAttribute in ASP.NET Core

With ASP.Net Core 2, how could you get access to the Controller instance that an ExceptionFilterAttribute is applied to? Is there a better way to acheive shared "base" controller properties and metho...

8 Aug at 21:48