Cannot access 'variable_name' before initialization

When using reactive variables by declaring them using the `$:` syntax, you get the following error. `Cannot access 'variable_name' before initialization` Here is the code: ``` <script> import { l...

7 Aug at 17:29

How to clear MemoryCache in ASP.NET Core?

I believe this class is missing Clear method, but anyway how to deal with it? In my project I'm caching DocumentRepository's methods for 24 hours where I'm getting lots of rows from database. But some...

.NET Core 2.2: xUnit Theory Inlinedata not working with enum values

Does anybody know how to use xUnit with "Theory" and "InlineData" with `enum` values? This here is leading to the tests not being recognized as tests and not run: ``` [Theory] [InlineData("12h", 12, ...

13 Oct at 19:5

Prevent desktop sharing of a particular c# winforms or detect desktop sharing

While developing an examination software I have a requirement to prevent desktop sharing through applications like TeamViewer, AnyDesk, Ammyy Admin etc or at least detection of it. Our examination sof...

29 May at 06:13

Disable Lazy Loading in Entity Framework Core

There are plenty of posts about how to disable lazy loading in Entity Framework, but the same techniques don't work in EF Core. I found the `LazyLoadingEnabled` property in the change tracker, but thi...

Razor pages and webapi in the same project

I created a web app (razor pages) in .net core 3.0. Then I added an api controller to it (both from templates, just few clicks). When I run app, razor page works, but api call returns 404. Where is th...

23 Sep at 11:35

AntiForgeryToken Expiration Blank Page

I'm using IdentityServer4 with ASP.NET Core 2.2. On the Post Login method I have applied the ValidateAntiForgeryToken. Generally after 20 minutes to 2 hours of sitting on the login page and then attem...

Exception "error MSB3024: Could not copy the file..." is thrown when attempting to build in DevOps pipeline using .Net Core 3.0 SDK (preview5)

I am attempting to build a `.Net Core 3.0 (preview)` project in a DevOps build pipeline. The steps in my `azure-pipelines.yml` executes up to the "`docker build`" step, successfully initiating the bu...

What is the correct way to embed Wyam into an asp.net core MVC solution?

What is the correct way to embed Wyam into and asp.net core MVC solution? As the project needs advanced authentication, I've embedded it in MVC. I am currently embedding it with an MVC controller rea...

27 May at 21:42

What is wrong when Transient injected to Singleton?

There is a problem of not correctly configured DI containers named [Captive Dependency](https://blog.ploeh.dk/2014/06/02/captive-dependency/) by Mark Seemann. But what about a scenario when "Transien...

SSRS external image not displayed when value set by expression

I am using `Microsoft.ReportViewer.WebForms` version 11 via an aspx page embedded in an MVC application. The report is rendered directly as a PDF from the report viewer. I have a tablix that displays...

How can I write a SQL update query with a where clause using Entity Framework .NET Core

I only want to update a field based on the condition that is mentionned below. I know how to write it in SQL. I'm not sure how to accomplish this in entity framework. I want to use this particular que...

6 May at 20:34

Why ILogger is not able to use the same position of the arguments array multiple times?

I'm trying to trace/log some information on a message dispatching process that I'm working on. When you try to use an object of a concrete position from the array of arguments more than once, this th...

25 May at 18:29

Could not load file or assembly 'Newtonsoft.Json, Version=6.0.0.0 ..." during runtime ,indirect dependency assembly keep looking for old version

I have a C# project that has direct reference to Newtonsoft.Json and some other references(which has indirect reference to Newtonsoft.Json). I want to upgrade Newtonsoft.Json version from 6.0.8 to the...

23 May at 13:22

Unit Testing ServiceBus.Message. How to set value for SystemProperties.LockToken?

I want to test a message handler callback that I have registered with a QueueClient using `queueClient.RegisterMessageHandler(MyCallBack, messageHandlerOptions)`. ``` public Task MyCallBack(Message m...

Creating an OrmLite repository base class for ASP.NET

I'm trying to create a general base class that I can use in my whole project. I've written some code but still getting a NULL instance on my DbConnectionFactory. I've create a ASP.Net web api project...

How to register dependency injection with generic types? (.net core)

I have an asp.net core web app with multiple parameters in appSettings.json file. I didnt' want to have services having `IOptions<MyObject>` in the constructor. I wanted MyObject in the constructor....

What is the difference between the old ListView and new CollectionView in Xamarin 4?

I don't understand what is different in Xamarin Form by new version 4.0 between old ListView and new CollectionView. Why is better to use CollectionView? I se help in microsoft docs, but don't se any...

2 Aug at 07:40

Why is useState not triggering re-render?

I've initialized a state that is an array, and when I update it my component does not re-render. Here is a minimal proof-of-concept: ``` function App() { const [numbers, setNumbers] = React.useState...

25 Jul at 18:39

Is there a way to auto-generate models for OrmLite using .net core?

I am making the assumption that the T4 templates still are not supported in .Net Core. Based on the articles I've read, I do not see any way to make them work. I have a large database schema that I'...

What is the new C#_LSP entry under the Text Editor options for?

Visual Studio 2019 has a new entry under the Text Editor options named C#_LSP. I guess it has something to do with the Language Server Protocol, but I couldn't find what the entry is used for exactly....

Getting "System.Data.SqlClient is not supported on this platform" when launched as dotnet cli tool

We have a simple netcore 2.2 console application using `DbContext` from `Microsoft.EntityFrameworkCore`. When launched from console as is it works as expected. However we decided to utilize it as a [...

XUnit ignore a test unless specifically triggered

I have 2 xunit tests I want to be ignored when triggering `Run All Tests` from VS, and to only run if the user ran it/them specifically. I've tried using `[Fact(Skip = "Long test, only run if needed,...

23 Jul at 06:5

How to use `setState` callback on react hooks

React hooks introduces `useState` for setting component state. But how can I use hooks to replace the callback like below code: ``` setState( { name: "Michael" }, () => console.log(this.state) );...

4 Jan at 21:15

How do I post simple JSON data with a file upload?

I'm trying to set up a file upload request in a ServiceStack TypeScript client that also includes the month for which the file is relevant. How do I set up the request so that both come through to the...

21 May at 21:51