CombineImpl Method

Delegate.CombineImpl Method (Delegate)


Concatenates the invocation lists of the specified multicast (combinable) delegate and the current multicast (combinable) delegate.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

protected virtual Delegate CombineImpl(
	Delegate d


Type: System.Delegate

The multicast (combinable) delegate whose invocation list to append to the end of the invocation list of the current multicast (combinable) delegate.

Return Value

Type: System.Delegate

A new multicast (combinable) delegate with an invocation list that concatenates the invocation list of the current multicast (combinable) delegate and the invocation list of d, or the current multicast (combinable) delegate if d is null.

Exception Condition

Always thrown.

This method applies only if the current delegate is multicast (combinable).

The current implementation simply throws a MulticastNotSupportedException.

The invocation list can contain duplicate entries; that is, entries that refer to the same method on the same object.


when invoked late-bound through mechanisms such as Type.InvokeMember. Associated enumeration: ReflectionPermissionFlag.MemberAccess

.NET Framework
Available since 1.1
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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