Extension Methods to make triggering event handlers easier

EventHandlerExtensions.cs

using System;

public static class EventHandlerExtensions
{
    public static void SafeInvoke(this EventHandler handler, EventArgs args = null, object sender = null)
    {
        if (handler != null)
            handler(sender, args ?? EventArgs.Empty);
    }

    public static void SafeInvoke<TData>(this EventHandler<EventArgs<TData>> handler, TData data, object sender = null)
    {
        if (handler != null)
            handler(sender, new EventArgs<TData>(data));
    }

    public static void SafeInvoke<TEventArgs>(this EventHandler<TEventArgs> handler, TEventArgs args = null, object sender = null)
        where TEventArgs : EventArgs
    {
        if (handler != null)
            handler(sender, args);
    }
}