public void AddAfter(AfterAction <T> action)
{
if (after.Exists(a => a.IsSame(action)))
{
throw EventHandlerAlreadyExistsException.CreateFromKey(action.Name);
}
after.Add(action);
}
public void AddBefore(BeforeAction <T> action)
{
if (before.Exists(a => a.IsSame(action)))
{
throw EventHandlerAlreadyExistsException.CreateFromKey(action.Name);
}
before.Add(action);
}
/// <summary>
/// Initializes a new instance of the <see cref="EventHandlerAlreadyExistsException" /> class.
/// </summary>
/// <param name="key">The key of the event handler.</param>
public static EventHandlerAlreadyExistsException CreateFromKey(string key)
{
var exception = new EventHandlerAlreadyExistsException($"{key} is already registered.");
return(exception);
}
