EF Core add-migration Build Failed

I have a developer that is getting "Build failed." when running add-migration in a .NET Core EF project, with no explanation of why the build failed. How do you troubleshoot this error? This is what ...

ServiceStack AutoQuery into custom DTO

So, I'm working with ServiceStack, and know my way around a bit with it. I've used AutoQuery and find it indispensable when calling for straight 'GET' messages. I'm having an issue though, and I hav...

Retrieving exceptions when ReplyTo is a temp queue

Our application uses temporary queues to direct service bus responses to the originating caller. We use the built-in `ServiceStack.RabbitMq.RabbitMqServer` to publish and handle messages. ``` Message...

Split batch of messages to be sent to Azure Service Bus

Let's say I have a collection `List<BrokeredMessage>` of messages that I want to batch-send to Azure Service Bus. The collection size is arbitrary, so the total size of all messages combined might b...

27 Jun at 11:57

Enable both Windows authentication and Anonymous authentication in an ASP.NET Core app

I know that this has been asked many times before, but unfortunately not about ASP.NET Core web apps, just the classic ASP.NET web apps. All the answers i've found on the internet don't help me, becau...

Angular CLI - Please add a @NgModule annotation when using latest

I'm new to Angular, so please excuse any new comer stupidity here. - - - - - > compiler.es5.js:1689 Uncaught Error: Unexpected directive 'ProjectsListComponent' imported by the module 'Proje...

HttpContextBase namespace could not be found

``` public string GetCartId(HttpContextBase context) { if (context.Session[CartSessionKey] == null) { if (!string.IsNullOrWhiteSpace(context.User.Identity.Name)) { ...

2 Aug at 05:4

libstdc++.so.6: version `GLIBCXX_3.4.20' not found

To upload the raw-reads > 2GB to SRA on Genebank, I installed aspera connect plug-in on ubuntu 16.04. But the plug-in did not pop up as indicated by the instruction on the genebank SRA portal. I go...

27 Jun at 06:9

Angular 4 Pipe Filter

I am trying to use a custom pipe to filter my `*ngFor` loop using an input field with ngModel. With my other custom pipe (sortBy), it works perfectly fine. However, the filter pipe seems to make it th...

5 Nov at 12:10

How to see docker image contents

I did a docker pull and can list the image that's downloaded. I want to see the contents of this image. Did a search on the net but no straight answer.

2 Oct at 10:39

Dotnet watch with debug Visual Studio Code

right now my PC is very slow and Visual Studio is working really bad so i decided to try Visual Studio Code to create my ASP.NET Core application. In one of Microsoft presentation I have seen running ...

ServiceStack OpenAPI Route/Tag Description

I've upgraded my project to use the latest version of ServiceStack and to use the OpenApiFeature instead of the SwaggerFeature. The descriptions I specified in the RouteSummary used to display in Swa...

Dependencies not copied to bin folder

I have created a new web site using Visual Studio 2017. The target framework for this site is NetCoreApp 1.1. As this is an MVC project, it references a number of Microsoft and third-party dlls from...

26 Jun at 15:22

How to add custom claims to access token in IdentityServer4?

I am using [IdentityServer4](https://identityserver4.readthedocs.io/en/release/). I want to add other custom claims to access token but I'm unable to do this. I have modified Quickstart5 and added AS...

StackOverflowExceptions in nested async methods on unwinding of the stack

We have a lot of nested async methods and see behavior that we do not really understand. Take for example this simple C# console application ``` public class Program { static void Main(string[] ar...

17 May at 14:38

Marching Cubes generating holes in mesh

I'm working on a Marching Cubes implementation in Unity. My code is based on Paul Bourke's [code](http://paulbourke.net/geometry/polygonise/) actually with a lot of modifications, but anyway i'm check...

30 Jun at 16:49

ServiceStack - Autoquery Request logs issue

I'm struggling to get the example custom autoquery of the requestlogs working in a servicestack service. I'm using VS2017 and have used the ServiceStack ASP.NET empty template to create a new soluti...

26 Jun at 14:38

Install specific version of ng cli

I'm using angular 2.4.9 for my application development so I need to use specific version of ng cli instead of the latest one. I know the below command will install latest version of ng cli ``` npm i...

26 Jun at 14:1

How to create Azure AD user programmatically?

I understand there is azure portal to manage groups, user and etc. Are there any ways to do it programmatically (either using web-api or sdk in C#)? Thanks in advance.

26 Jun at 09:35

Thread.Sleep alternative in .NET Core

I'm porting a library to .NET core and to maximize portability I need to eliminate the dependency on System.Threading.Thread, and therefore Thread.Sleep. Whats an alternative to this?

26 Jun at 07:13

TLS 1.2 not negotiated in .NET 4.7 without explicit ServicePointManager.SecurityProtocol call

I need to upgrade a .NET application to support a call to an API on a website that only supports TLS 1.2. From what I read, if the application is targeting 4.6 or higher then it will use TLS 1.2 by de...

26 Jun at 15:43

Keras input explanation: input_shape, units, batch_size, dim, etc

For any Keras layer (`Layer` class), can someone explain how to understand the difference between `input_shape`, `units`, `dim`, etc.? For example the doc says `units` specify the output shape of a...

C# 7.0 case pattern matching on generic parameter

Is there a reason for not being able to handle a generic variable by the type pattern? Please consider the code: ``` public static int CompareValues<T>(T left, T right) { switch (left) { case...

25 Jun at 08:2

Performance-wise: Is a WPF application better than an Electron one coded wisely?

Recently, I have been reading about and I got curious about its potential when compared to something already established in the market of building `Windows 7` desktop applications (i.e., ). So far, ...

25 Jun at 09:1

Authenticating to ServiceStack with Angular

We are looking to build an Angular 2 SPA using ServiceStack. We are primarily looking for a getting started type of instructions/demos on handling authentication, uploading files, etc using Typescript...