The primary difference is where your .NET code is running: with Blazor Server, it’s 100% server-side; with a hosted Blazor WASM application, .NET code is running on both the server and the client (though the server can run any other language or framework you want too). From what I read I understand Blazor Server side … Read more
For me, it was because I was using @bind-value. The v is uppercase. Use @bind-Value
I have just implemented a State Container like this and ran into the same error – but my service needs to be a singleton. So I found an example on the aspnetcore git that does exactly what the error message says to do. Call InvokeAsync — not from your state container but when you try … Read more
You were close: <ChildComponent Item=”someModel” T=”SomeModel” DeleteCallback=”OnDeleteSomeModel” /> @code { SomeModel someModel = new SomeModel(); void OnDeleteSomeModel(SomeModel someModel) { … } } The EventCallback uses a generic type and blazor cannot infer it if you don’t pass the type to the component. This means that if you have a EventCallback<T> you need to pass the … Read more
In the code behind razor.cs file, IJSRunTime or others can be injected with the [Inject] attribute public partial class BillingDashboard { [Inject] IJSRuntime JSRuntime { get; set; } protected override async Task MyFunction() { await JSRuntime.InvokeVoidAsync(“console.log(‘test’)”); } }
You need to call the Delete method properly and make it return Task instead of void: <button onclick=”@(async () => await Delete(person.Id))”>❌</button> @functions { // … async Task Delete(Guid personId) { await this.PersonRepository.Delete(personId); } }
The way to do it after release 3.1 of ASP.NET Core seems to be <a href=”” @onclick=”@SomeAction” @onclick:preventDefault />
Create a shared service. Subscribe to the service’s RefreshRequested event in the parent and Invoke() from the child. In the parent method call StateHasChanged(); public interface IMyService { event Action RefreshRequested; void CallRequestRefresh(); } public class MyService: IMyService { public event Action RefreshRequested; public void CallRequestRefresh() { RefreshRequested?.Invoke(); } } //child component MyService.CallRequestRefresh(); //parent component … Read more
Note: This answer is from December 2018 when an early version of Server-side Blazor was available. Most likely, it is no longer relevant. The poor man’s approach to state is a hinted by @JohnB: Use a scoped service. In server-side Blazor, scoped service as tied to the SignalR connection. This is the closest thing to … Read more
Maybe you can try running your application from command prompt: dotnet watch run debug