Action<T1, T2, T3, T4> public sealed delegate Action<T1, T2, T3, T4> : MulticastDelegate Documentation public Action(object object, IntPtr method) public virtual IAsyncResult BeginInvoke(T1 arg1, T2 arg2, T3 arg3, T4 arg4, AsyncCallback callback, object object) public virtual void EndInvoke(IAsyncResult __result) public virtual void Invoke(T1 arg1, T2 arg2, T3 arg3, T4 arg4)