Type argument 'System.Net.Http.Headers.MediaTypeHeaderValue' violates the constraint of type parameter 'T'

I have a Web API solution (targeting .NET 4.6) with a couple of fairly lightweight .NET Core projects in it. I've packaged the .NET Core projects up as a NuGet package and installed them to the Web AP...

14 Jul at 09:38

Could not find method named Get(Login) or Any(Login) on Service

I get the following error when trying to send an HTTP POST request to my login endpoint: "Could not find method named Get(Login) or Any(Login) on Service LoginService" The Login class has three pro...

13 Jul at 13:18

Is there any way to get Firebase Auth User UID?

I am looking to fetch Auth User(s) UID from Firebase via NodeJS or Javascript API. I have attached screenshot for it so that you will have idea what I am looking for. ![enter image description here](...

Get Image from the Gallery and Show in ImageView

I need to get an image from the gallery on a button click and show it into the imageview. I am doing it in the following way: ``` btn_image_button.setOnClickListener(new View.OnClickListener() { ...

Why comparing two strings as object causes unexpected result

Consider the following piece of code. ``` object str = new string(new char[] { 't', 'e', 's', 't' }); object str1 = new string(new char[] { 't', 'e', 's', 't' }); Console.WriteLine(str==str1); // fal...

13 Jul at 11:52

Spring Data and Native Query with pagination

In a web project, using latest spring-data (1.10.2) with a MySQL 5.6 database, I'm trying to use a native query with pagination but I'm experiencing an `org.springframework.data.jpa.repository.query.I...

6 Mar at 09:48

Open generic type arguments cannot be inferred from the usage

For demonstration purposes and completeness, the following classes are used (): ``` public class A { public IEnumerable<B> B { get; set; } } public class B { public IEnumerable<C> C { get; ...

Newtonsoft.JSON v9.01 + FileNotFoundException (.NET Core Class library)

(VS2015 Update 3 + Patch) I have a plain .NET console application (.NET 4.6) and reference a .NET core class library that targets NetStandard v1.3. The class library has a reference to Newtonsoft.JSO...

13 Jul at 11:46

Why does Google.Pubsub.V1 beta01 not work with dotnet cli projects?

I have created a very simple program which should list the topics available in a Google Cloud project. The code is trivial: ``` using System; using Google.Pubsub.V1; public class Test { static v...

nginx docker container: 502 bad gateway response

I've a service listening to 8080 port. This one is not a container. Then, I've created a nginx container using official image: ``` docker run --name nginx -d -v /root/nginx/conf:/etc/nginx/conf.d -p 4...

30 Mar at 03:17

Run triggered Azure WebJob from Code

I created a console application upload as Azure trigger Webjob. It is working fine when I run it from Azure Portal. I want to run this from my C# code. I don't want to use Queue or service bus. I just...

13 Jul at 08:11

Xamarin DependencyService: System.MissingMethodException: Default constructor not found for [Interface]

I am receiving this error when using the Dependency Service on a `Xamarin.Forms PCL`. I have seen answers to this error that involve `iOS` and the `Linker`. However, I am running this on `Android` and...

A reference to could not be added ´. An assembly must have a dll or exe extension in order to be referenced

I have plain c# console application (.NET 4.6) where I want to reference a .NET Core Class Library: ``` { "version": "1.0.0-*", "dependencies": { "NETStandard.Library": "1.6.0", "Newtons...

20 May at 21:29

LiteDB: Invalid BSON data type 'Null' on field '_id'

Using [LiteDB](http://litedb.org), and it is amazing. It works well for loading and storing data, however, not on subsequent loads after the database has been created. On initial load, everything is ...

13 Jul at 01:2

How do I pass a RefId to the UserAuthDetail table in Servicestack?

I see that servicestack supports passing an int? RefId and string RefString in both the Userauth table and the UserAuthDetail table. I have hooked up my sign-up/sign-in process to facebook, but when i...

13 Jul at 00:57

Library NuGet configuration is invalid

VS2015 Update 3. I created a plain .net core class library. Right-click on Project->References-> Manage Nuget packages throws the following error? What is missing? [](https://i.stack.imgur.com/ELVX...

Single letter words in camelCase, what is a standard for handling these?

I'm trying to group together an object's vertex X components in a vector, like structure of array style. Naturally this is the way. ``` Vec xComponents; or Vec xVals; or simply Vec x; ``` However...

12 Jul at 23:39

How to decode JWT Token?

I don't understand how this library works. Could you help me please ? Here is my simple code : ``` public void TestJwtSecurityTokenHandler() { var stream = "eyJhbGciOiJSUzI1N...

NSubstitute - mock throwing an exception in method returning Task

Using [NSubstitute](http://nsubstitute.github.io), how do you mock an exception being thrown in a method returning a Task? Let's say our method signature looks something like this: ``` Task<List<obj...

Conflict between System.IdentityModel.Tokens and Microsoft.IdentityModel.Tokens

I have a conflict when using System.IdentityModel.Tokens : ``` using System; using System.Configuration; using System.Data; using System.Data.SqlClient; using System.IdentityModel.Tokens; using System...

20 Jun at 09:12

'No database provider has been configured for this DbContext' on SignInManager.PasswordSignInAsync

> .Net Core 1.0.0 - SDK Preview 2 (x64).Net Core 1.0.0 - VS "15" Preview 2 (x64).Net Core 1.0.0 - Runtime (x64) So, we updated an RC1 app to the latest versions above. After many hours of switching re...

Where can I find a list of all available ChromeOption arguments?

I am a big advocate for reading the manual. But in this case, despite searching online for some time I cannot find a manual explaining all of the available `ChromeOptions` arguments. Somewhere there m...

23 Jan at 10:8

Why specify route parameter type in web api?

I have a web api end point with a route parameter. It works with or without the route parameter type. I just would like to know why specify this in the following code? ``` [HttpGet] [Route("{myId:int...

12 Jul at 16:29

Converting object to datetime format in python

Below is the first row of my csv DateTime column: ``` Mon Nov 02 20:37:10 GMT+00:00 2015 ``` The DateTime column is currently an object and I want to convert it to datetime format so that I can get t...

17 Apr at 02:32

How to use Rijndael encryption with a .Net Core class library? (Not .Net Framework)

How do we use Rijndael encryption in a .Net Core class library? (Not a .Net Framework Class Library) We need to create a shared .Net Core library for use in multiple projects and need to implement En...