how to make an OPTIONS request with HttpClient

How do I send an OPTIONS request with System.Net.Http.HttpClient exposed methods for HttpClient - DeleteAsync - GetAsync - PostAsync - PutAsync - few others as well..... I was expecting a OptionsAsync

4 Jun at 03:39

Deconstruction is ambiguous

I have a vector class with two deconstruction methods as follows: ``` public readonly struct Vector2 { public readonly double X, Y; ... public void Deconstruct( out double x, out double...

19 Apr at 20:5

React Native Error: ENOSPC: System limit for number of file watchers reached

I have setup a new blank react native app. After installing few node modules I got this error. ``` Running application on PGN518. internal/fs/watchers.js:173 throw error; ^ Error: ENOSPC: Syst...

5 Oct at 12:28

What is the difference between services.Configure() and services.AddOptions<T>().Bind() when loading configuration in ASP.NET Core?

In my ASP.NET Core 2.2 WebApi project, I want to load configuration from `appsettings.json` into strongly typed object. The appsettings.json has following configuration section: ``` { "MySettings1...

19 Apr at 13:42

How to map IdentityServer4 Identity to any WebApp (.Net MVC Boilerplate, .Net Core Boilerplate)

I'm creating an SSO server, to centralize all users in ActiveDirectory(AD) and manage them there instead of the database of each specific application. To made this server I used IdentityServer4(Idsr4)...

.Net Core warning No XML encryptor configured

When I start my service (API on .Net Core 2.2 in Docker container) I've got a warning: > No XML encryptor configured. Key {daa53741-8295-4c9b-ae9c-e69b003f16fa} may be persisted to storage in une...

19 Apr at 11:7

LoadSelect creating unexpected query

I'm attempting to load a date filtered list of objects that have a reference via LoadSelect. However when the query is generated to load the references it is not constructed properly and I receive a "...

19 Apr at 10:34

The target process exited without raising CoreCLR started event error with .NET Core 2.2

I want to debug an empty WebApi Project based on .NET Core 2.2. I installed the "Core 2.2 SDK x86" and changed the target framework to 2.2: ``` <Project Sdk="Microsoft.NET.Sdk.Web"> <PropertyGroup> ...

Handle an input with React hooks

I found that there are several ways to handle user's text input with hooks. What is more preferable or proper way to handle an input with hooks? Which would you use? 1) The simplest hook to handle in...

19 Apr at 14:18

Entity Framework cannot bind value object in entity constructor

I've created an entity that takes a value object as a parameter in it's constructor, however when I add the entity to the db context it throws the following exception. > InvalidOperationException: No...

18 Apr at 15:54

Unable to make a connection between trivial C# gRPC client and server

I'm trying to get a basic gRPC C# client and server working using the .Net bindings for the [official grpc library](https://github.com/grpc/grpc) (version 1.20). But every time my client calls fail to...

28 May at 07:43

Redirect to div in page with #

I want to redirect to a certain div of a webpage after handling some data in a controller. Is their any way to add the '#' to the end of the url? Or should I handle it with javascript? Example: ``` ...

18 Apr at 08:30

How to package and deploy a NuGet package with symbols and source code so that debugger can use THAT source code?

I have created a very simple NuGet package from a .net framework visual studio Class Library project, where the class library source is in C#. I used this command to create the nuget package: ``` nu...

cannot search for NuGet Packages in visual studio 2019

Cannot search for online NuGet packages in visual studio 2019. Default package source is offline and no option for adding online package source. Searched through the internet. Wasn't able to find the ...

17 Apr at 13:37

React Hook : Send data from child to parent component

I'm looking for the easiest solution to pass data from a child component to his parent. I've heard about using Context, pass trough properties or update props, but I don't know which one is the best ...

17 Apr at 11:47

How to change Mat-Datepicker date format to DD/MM/YYYY in simplest way?

I'm setting up a mat-datepicker for DOB and traditionally the display format is MM/DD/YYYY,I need to change it to DD/MM/YYYY with less coding I tried format tag in mat-date picker but it does not work...

19 Jul at 07:26

Using Node.js 'jsrsasign' library to verify signature generated by .NET Bouncy Castle library

I'm generating signatures in C# using the Bouncy Castle library as follows: ``` var privateKeyBase64 = "MIGTAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBHkwdwIBAQQgg8/MbvGGTDMDpfje8lQBZ8st+l3SK7jRl7OWlyUl/VagCgY...

18 Apr at 05:51

Ormlite very slow

I have a simple table with only 6 quite simple fields, and only 2 rows in the table. When running the query SELECT * FROM PersonsPreferences from MS SQL Server Management Studio, "Client Statistic...

16 Apr at 20:45

Where should I perform custom application initialization steps in ASP.NET Core?

ASP.NET Core framework gives us two well defined places for initialization: 1. the `Startup.ConfigureServices()` method for registering DI services 2. the `Startup.Configure()` method for configurati...

16 Apr at 12:4

Does ServiceStack now support Oracle.ManagedDataAccess.Client?

ServiceStack.OrmLite.Oracle OracleOrmLiteDialectProvider.cs class uses `Oracle.ManagedDataAccess.Client` [here](https://github.com/ServiceStack/ServiceStack.OrmLite/blob/master/src/ServiceStack.OrmLit...

16 Apr at 09:50

Elasticsearch.Net.UnexpectedElasticsearchClientException during deserilize result

I have a c# project which i want send a request to my elastic search server. this is my connection and elastic search client : ``` ConnectionSettings connectionSettings; ElasticClient elasticClient; ...

24 Apr at 11:56

Error Message: MongoError: bad auth Authentication failed through URI string

I'm trying to connect to my mongoDB server via the connection string given to me by mongo: ``` "mongodb+srv://david:password@cluster0-re3gq.mongodb.net/test?retryWrites=true" ``` In my code I am call...

3 Dec at 23:47

Using Stopwatch in C#

Does anyone know how I can add a timer function to this code that solves sudoku puzzles? I've tried the Stopwatch class but I can't get it to work because I don't know exactly where to put it. I've tr...

8 Feb at 00:34

How to disable caching for all WebApi responses in order to avoid IE using (from cache) responses

I have a simple ASP.NET Core 2.2 Web Api controller: ``` [ApiVersion("1.0")] [Route("api/[controller]")] [ApiController] public class TestScenariosController : Controller { [HttpGet("v2")] pub...

Cannot convert lambda expression to type 'ServiceLifetime' because it is not a delegate type on Asp.net core 2.2

Why do I get this error: > Cannot convert lambda expression to type 'ServiceLifetime' because it is not a delegate type [TokenAuthWebApiCore.Server] on this line of code: This is how I use it: I am th...

6 May at 20:35