Check if EventCallback has been set Blazor

Question

Is there a way to check if EventCallback has been set to something. I am setting mine outside the component and only want to show certain things inside the component if the EventCallback has been set.

Answer 1

You can use the HasDelegate property on the EventCallback parameter. This will return a bool indicating whether the event dispatcher is non null

[Parameter]
public EventCallback DoSomething { get; set; }

private bool IsEventSet => DoSomething.HasDelegate;