/// <summary>
/// Adds an event registration to the collection for the specified <paramref name="eventName"/>.
/// </summary>
/// <param name="eventName">Can be null or empty.</param>
/// <param name="handler">The actual event handler delegate. Must not be null.</param>
/// <returns>Returns the registration object that contains the user data. Never returns null.</returns>
public EventHandlerRegistration <TUserData> AddEventRegistration(string eventName, Delegate handler)
{
Check.IfArgumentNull(handler, nameof(handler));
if (!_registrations.TryGetValue(eventName, out List <EventHandlerRegistration <TUserData> > regList))
{
regList = new List <EventHandlerRegistration <TUserData> >();
_registrations.Add(eventName, regList);
}
var reg = new EventHandlerRegistration <TUserData>(handler);
regList.Add(reg);
return(reg);
}
/// <summary>
/// Adds an event registration to the collection for the specified <paramref name="eventName"/>.
/// </summary>
/// <param name="eventName">Can be null or empty.</param>
/// <param name="handler">The actual event handler delegate. Must not be null.</param>
/// <returns>Returns the registration object that contains the user data. Never returns null.</returns>
public EventHandlerRegistration <TUserData> AddEventRegistration(string eventName, Delegate handler)
{
Check.IfArgumentNull(handler, "handler");
List <EventHandlerRegistration <TUserData> > regList = null;
if (!this.registrations.TryGetValue(eventName, out regList))
{
regList = new List <EventHandlerRegistration <TUserData> >();
this.registrations.Add(eventName, regList);
}
Contract.Assume(regList != null);
var reg = new EventHandlerRegistration <TUserData>(handler);
regList.Add(reg);
return(reg);
}