blazor server | Call Async function from blazor component

Question

User2110873642 posted

how do i call this async function properly from blazor syntax?

Blazor component:

<h3>LoginTest</h3>

//The await operator can only be used in an async method.
@if (await GetSomething())
{

}

some class library:

 public async Task<bool> GetSomething()
        {
            //I changed the function to Async task, because the code below required it.
            return await BlazoredSessionStorage.GetItemAsync<string>("Something");
        }

Answer 1

User-474980206 posted

you would call the async routine in one of the lifecycle events, not render (which needs to be fast).

   https://docs.microsoft.com/en-us/aspnet/core/blazor/components/lifecycle?view=aspnetcore-3.1

note: component renders are supposed to be fast and may be called multiple times when rendering the html update. you will have performance problems if you call long compute process or use .Wait(). all long running code should, be in a async lifecycle event.