Any way possible that a custom method can be fired using the selected items from multiselect. There is absolutely no where in the documentation to specify this. It is only provided SelectedItemsChanged that takes lambda. When trying to fire a custom method on selected items when the user clicks a button, the follwing error is thrown:
Argument 2: cannot convert from 'method group' to 'EventCallback' .
It is provided a link below : The lambda expression in the handler is required by the framework: https://github.com/aspnet/AspNetCore/issues/12226.
It doesn't really make sense why this link has been provided as it takes you to a blog page and absolutely no solution is provided.
So may I ask, how do you fire a custom method only on the selected items?