.Net core HttpClient bug? SocketException: An existing connection was forcibly closed by the remote host

The following code runs without any error in a full .Net framework console program. However, it got the following error when running in .Net core 2.1. ``` class Program { static void Main(str...

7 Aug at 18:12

Error build VSTS: ## [error] Error: Unable to locate the 'nuget'

I created a test project with C# + SpecFlow and I am trying to build the solution through VSTS, however in Nuget Restore is presenting the error below. > 2018-08-07T15:29:39.6678023Z ##[error]Error: ...

13 Aug at 21:13

What are single and zero element tuples good for?

C# 7.0 introduced value tuples and also some language level support for them. They [added the support](https://github.com/dotnet/corefx/blob/master/src/System.ValueTuple/src/System/ValueTuple/ValueTup...

7 Aug at 09:8

c# Anonymous Interface Implementation

i've already seen this question a few times but i still don't get it. In Java, i can do this: ``` new Thread(new Runnable(){ @Override public void run() { System.out.println("Hello"); } })....

7 Aug at 09:5

How to Generate ASP.NET Password using PHP

I have existing ap.net c# website is working with mysql database. now i am planning to create mobile app for that website for that API needs to be ready. I am creating an API into PHP Laravel Framewor...

7 Aug at 07:7

Find the smallest positive integer that does not occur in a given sequence

I was trying to solve this problem: > Write a function:``` class Solution { public int solution(int[] A); } ``` that, given an array A of N integers, returns the smallest positive integer (greater tha...

12 May at 15:12

ServiceStack.OrmLite: Inserting or updating columns that are not represented in the POCO?

I looked through the docs and I didn't find anything on this subject, but I thought I'd ask, to be sure: Is there a way for OrmLites INSERT and UPDATE APIs to make it possible in one query, to insert...

HttpRequest describable to string

I'm using asp.net core v2.1 with C# and made a small website. This website has `ExceptionsTracker` that catching all the unhandeled exceptions. ``` internal class ExceptionTracker : ExceptionFilterA...

7 Aug at 06:53

Remove double-quotes from generated query from ServiceStack.Ormlite

Our DBA don't want us to use double quoted fields and tables in our queries (don't ask me the reason)... the problem is that ServiceStack.OrmLite double quote them all, and I don't have any idea on ho...

6 Aug at 22:35

Can't add script component because the script class cannot be found?

Yesterday I updated unity from unity5 to 2018.2.2f1. Unity scripts are not loading after Update 2018.2.2f1. Once I try to play the Scene the scripts are not loaded and I can't add the script again it...

7 Aug at 13:34

FFmpeg skips rendering frames

While I extract frames from a video I noticed that `ffmpeg` wont finish rendering certain images. The problem ended up being byte "padding" between two `jpeg` images. If my buffer size is `4096` and i...

11 Aug at 13:15

C# "Failed to parse method 'InitializeComponent'. The parser reported the following error 'Invalid symbol kind: NamedType'"

I have a project written by someone else with .NET framework 4 I have a problem with one of the forms (others opening correctly). When I try to open Form1 in "Design mode" Visual Studio 2017 shows th...

6 Aug at 14:35

IdentityServer4 custom AuthorizeInteractionResponseGenerator

Sadly documentation on the implementation of a custom `AuthorizeInteractionResponseGenerator` in IdentityServer4 is sorely lacking. I'm trying to implement my own `AuthorizeInteractionResponseGenerat...

6 Nov at 08:19

How to instantiate an instance of FormFile in C# without Moq?

I want to test a function that attaches files to documents in a RavenDB database with an integration test. For this, I need an instance of `IFormFile`. Obviously, I can't instantiate from an interfac...

6 Aug at 10:2

Missing required argument '<PROVIDER>'. Scafffold Dbcontext in asp.net core 2.1.MAC

Trying to do Scaffold with the existing database in mac os visual studio using terminal. Here is the command for the scaffold ``` dotnet ef dbcontext Scaffold "Server=<servername>;Initial Catalog=...

No mapping to a relational type can be found for the CLR type 'Int32[]'

When I execute a SQL Server stored procedure from Entity Framework Core (v2.0) in my ASP.NET Core project, I get this exception: > InvalidOperationException: no mapping to a relational type can be fo...

6 Aug at 09:15

Validation of ASP.NET Core options during startup

Core2 has a hook for validating options read from `appsettings.json`: ``` services.PostConfigure<MyConfig>(options => { // do some validation // maybe throw exception if appsettings.json has inva...

5 Mar at 17:57

CUDA runtime error (59) : device-side assert triggered

``` THCudaCheck FAIL file=/opt/conda/conda-bld/pytorch_1524584710464/work/aten/src/THC/generated/../generic/THCTensorMathPointwise.cu line=265 error=59 : device-side assert triggered Traceback (most r...

16 Jul at 23:18

Select Specific Columns from Spark DataFrame

I have loaded CSV data into a Spark DataFrame. I need to slice this dataframe into two different dataframes, where each one contains a set of columns from the original dataframe. How do I select a s...

1 Mar at 01:10

How to access Lambda environment variable?

When running a .net core 2.1 AWS Lambda function, it is simple to fetch an environment variable from the AWS Lambda Console in c# using: ``` var envVariable = Environment.GetEnvironmentVariable("myV...

Keep wifi active in foreground service after phone goes to sleep

I want to receive packets from wifi when my phone is locked. The problem is that when I lock my screen, my foreground service stops receiving packets. I'm using Foreground Service like this: ``` publ...

Angular: How to download a file from HttpClient?

I need download an excel from my backend, its returned a file. When I do the request I get the error: > TypeError: You provided 'undefined' where a stream was expected. You can provide an Observab...

Waiting for another flutter command to release the startup lock

When I run my flutter application it show > Waiting for another flutter command to release the startup lock this messages and not proceed further.

25 Jun at 08:54

String.Substring() seems to bottleneck this code

I have this favorite algorithm that I've made quite some time ago which I'm always writing and re-writing in new programming languages, platforms etc. as some sort of benchmark. Although my main pro...

12 Aug at 00:59

How to combine FromBody and FromForm BindingSource in ASP.NET Core?

I've created a fresh ASP.NET Core 2.1 API project, with a `Data` dto class and this controller action: ```csharp [HttpPost] public ActionResult Post([FromForm][FromBody] Data data) { return...

3 May at 07:40