Questions

Servicestack MySql connection string

I'm trying to figure out how to create a connection string in Servicestack for (in this case) MySql. The question is: what is the connection string in Web.config supposed to look like ? I stumbled ...

23 Jul at 13:58

Proper way to register HostedService in ASP.NET Core. AddHostedService vs AddSingleton

What is the proper way to register a custom hosted service in ASP.NET Core 2.1? For example, I have a custom hosted service derived from [BackgroundService](https://learn.microsoft.com/en-us/dotnet/ap...

ADB stopping at <waiting for devices>

I was trying to install some custom recovery and ROM on to my phone when I got to this situation. ADB or fastboot shows ``` <waiting for devices> ``` I tried and saw few solutions. I'm writing ...

3 Apr at 20:38

Error: JavaFX runtime components are missing, and are required to run this application with JDK 11

I'm trying to run the sample JavaFX project using IntelliJ but it fails with the exception : ``` Error: JavaFX runtime components are missing, and are required to run this application ``` I have do...

23 Jul at 12:22

Httpclient This instance has already started one or more requests. Properties can only be modified before sending the first request

I am creating an application in .Net Core 2.1 and I am using http client for web requests. The issue is I have to send parallel calls to save time and for that I am using Task.WhenAll() method but whe...

HMAC authentication via Postman

I'm using an example for setting up HMAC authentication for a Web API project. The original example source code/project is available here: [http://bitoftech.net/2014/12/15/secure-asp-net-web-api-usi...

31 Jul at 06:30

What is the difference and why does Switch Case work like this in C#?

I have two functions, one can be compiled and the other cannot. What is the difference? Does function number 1 assume that case 1 always will be hit, or it just a compiler problem? ``` public void T...

23 Jul at 13:40

How do I implement IHttpClientFactory in .net framework apart from .Net core?

In .Net core, we can use IHttpClientFactory to inject and use during runtime. As a developer I no need to worry about the dependency resolution. I need to just specify AddHttpClient() in service colle...

23 Jul at 08:43

Returning false while connecting bio metric machine using C#

I want to connect bio metric machine using C#. I am using for connecting with machine I have used connect_net method to connect with ip address and port ``` public partial class Form1 : Form { ...

25 Jul at 06:40

Posting data to sql server using servicestack and c#

I'm just starting to learn servicestack and c# and I need some help with posting data to sql server. When I test using swagger I get a 200 response but nothing is actually being inserted into the data...

23 Jul at 05:6

ASP.NET Core 2.1 Invalid Request Line Issue

Our Linux Docker ASP.NET Core container server logs are getting filled by the following 'Informational' log entries since we've updated from .NET Core 2.0 to .NET Core 2.1 (SDK 2.1.302): ``` INFO|Mic...

20 Sep at 23:35

ASP.NET Core IHostedService manual start/stop/pause(?)

I would like to implement a recurring (timed) IHostedService instance in ASPNET Core that can be stopped and started on demand. My understanding is that IHostedService(s) are started by the framework...

Maven: Invalid target release: 10

I'm trying to compile my [maven](https://maven.apache.org/download.cgi) project using [Java 10](http://www.oracle.com/technetwork/java/javase/downloads/jdk10-downloads-4416644.html) but I'm having tro...

22 Jul at 19:50

Validate authentication cookie with ASP.NET Core 2.1 / 3+ Identity

When using Cookie Authentication in ASP.NET Core 2 (with or without `Identity`) it might happen, that a user's email or name is changed, or even the account is deleted during the cookie's lifetime. Th...

How kubectl port-forward works?

`kubectl` exposes commands that can be used to create a Service for an application and assigns an IP address to access it from internet. As far as I understand, to access any application within Kuber...

22 Apr at 05:33

ASP.NET Core MVC Slow response generation

I have an ASP.NET Core MVC web application that has an endpoint which returns some data as a json. The onlly issue is that my data is around 5 MBs of raw (non-idented) JSON, and the response takes a r...

Why doesn't a struct in an array have to be initialized?

I researched this subject but I couldn't find any duplicate. I am wondering why you can use a `struct` in an array without creating an instance of it. For example, I have a `class` and a `struct`: `...

22 Jul at 12:19

Azure Key Vault Certificates does not have the Private Key when retrieved via IKeyVaultClient.GetCertificateAsync

I have 2 approaches to do the same thing, but Azure has deprecated the one that works, and the other method doesn't work. I store my PFX in Azure Key Vault . (when I create the secret I see a warni...

How to get Context in Android MVVM ViewModel

I am trying to implement MVVM pattern in my android app. I have read that ViewModels should contain no android specific code (to make testing easier), however I need to use context for various things ...

21 Jul at 00:29

Elasticsearch: Max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

I have an issue with a systemd config for ElasticSearch. ``` [Unit] Description=platform-elasticsearch After=syslog.target network.target remote-fs.target nss-lookup.target [Service] User={{ app_use...

27 Mar at 16:58

How to install PHP composer inside a docker container

I try to work out a way to create a dev environment using docker and laravel. I have the following dockerfile: ``` FROM php:7.1.3-fpm RUN apt-get update && apt-get install -y libmcrypt-dev \ my...

'unknown' vs. 'any'

TypeScript 3.0 introduces `unknown` type, according to their wiki: > unknown is now a reserved type name, as it is now a built-in type. Depending on your intended use of unknown, you may want to re...

25 Feb at 15:12

Customize automatic response on validation error

With asp.net core 2.1 an ApiController will automatically respond with a 400 BadRequest when validation errors occur. How can I change/modify the response (json-body) that is sent back to the client?...

23 Sep at 16:18

The type or namespace SelectElement could not be found in selenium c#

driver.FindElement(By.Id("inputUsername")).SendKeys("aca"); driver.FindElement(By.Id("inputPassword")).SendKeys("123"); driver.FindElement(By.TagName("button")).Click(); SelectElement oSelect ...

5 May at 14:12

What does model.train() do in PyTorch?

Does it call `forward()` in `nn.Module`? I thought when we call the model, `forward` method is being used. Why do we need to specify train()?

12 Jul at 16:50