how to open existing blazor project in vs code

Blazor vs Razor

Razor... is a solution for server-based architecture that can handle API logic and server-side templating, but it cannot offer client-side logic outside of JavaScript....Blazor... is the next step (and hopefully successor) that will allow the same server-side functionality as Razor but will integrate client-side logic using C# instead of JavaScript...

VS Code CSC : error CS1617: Invalid option '7.3' for /langversion

You can use one of the 15.7 previews or above. It's a bit pointless to use those now that the 15.7 final is out. You can also use the 15.8 previews as they are incremental on top of that 15.7 final. Visit ...blazor.net... for up to date details of getting started etc.

How to install ASP.NET Core Blazor Language Services when not using VS 2017?

The language service is for intellisense in Visual Studio. So if you are not using Visual Studio there is no need to install it. There is no blazor intellisense support for VSCode right now or something....See ...here... for the 7.3 error.

Blazor default template fails with HTTP Error 502.5 with .NET Core 2.1 SDK RTM

This issue is reported on the ...Blazor GitHub issue 1424... but do not do as suggested and delete your global.json file....The solution is to modify your global.json file to have your installed SDK version....I've got dotnet 2.1.3 installed and 2.1.300 uin my Balzor project's global.json file, and am getting the same error...It turns out I've got ...

can't build default blazor project in 0.5.1

change SDK version to what you installed on your machine in ...global.json... or try to delete ...global.json...If you want to know which version of .net core installed, run following command:...dotnet --version

Add Blazor support to existing ASP .NET Core 2.1 MVC application

I wrote a blogpost about that: ...http://flores.eken.nl/mixing-blazor-and-mvc-pages-in-one-app/...Basically:...In the startup.cs of your site, change the app.UseBlazor() statement to:...app.Map("/bzr", child => { child.UseBlazor<Blazor.Program>(); });...And in the index.html in the wwwroot, alter the base href to:...<base href="/bzr/" />

Add Model Project (EntityFramwork) to Asp.net Core 3 Project

It needs to be:....AddDbContext<Models.DataContext>(options => options.UseSqlServer(Configuration.GetConnectionString("DataContext"))); ...In other words, ...without... the curly brackets. You could alternatively just return the ...options... instance, but that's all just unnecessary code-bloat. The exception is a red herring. Because your lamb...

Blazor: A second operation started on this context before a previous operation completed

You can try to create a new scope for each request:...public class MyViewModel : INotifyPropertyChanged { protected readonly IServiceScopeFactory _ServiceScopeFactory; public MyViewModel(IServiceScopeFactory serviceScopeFactory) { _ServiceScopeFactory = serviceScopeFactory; } public async Task<IEnumerable<Dto>> GetLis...

Blazor: A second operation started on this context before a previous operation completed

You can try to create a new scope for each request:...public class MyViewModel : INotifyPropertyChanged { protected readonly IServiceScopeFactory _ServiceScopeFactory; public MyViewModel(IServiceScopeFactory serviceScopeFactory) { _ServiceScopeFactory = serviceScopeFactory; } public async Task<IEnumerable<Dto>> GetLis...

Responsive UI design causing problems for Entity Framework in Blazor application

I am familiar with writing highly responsive ASP.NET MVC applications where we load the initial page data, and then fire off multiple AJAX calls to load "secondary" data for the page. So behinds the scenes, these AJAX requests all hit the web server(s) about the same time and pull data from our SQL DB....I envisage doing something very similar wit...

How to access Entity Framework DbContext entities in Server-Side Blazor Components

What you call a controller should be turned into a service class, that retrieves data from the database, and pass it to the calling methods. You should add this service to the DI container in the Startup class. To use this service in your components you should inject it like this:...@inject DataService myDataService ...I think that the Blazor templ...