public delegate void TwoArgAction<T1, T2>(
	T1 t1,
	T2 t2
)

Public Delegate Sub TwoArgAction(Of T1, T2) ( 
	t1 As T1,
	t2 As T2
)

generic<typename T1, typename T2>
public delegate void TwoArgAction(
	T1 t1, 
	T2 t2
)

type TwoArgAction = 
    delegate of 
        t1 : 'T1 * 
        t2 : 'T2 -> unit