Every delegate type implicitly provides the following predefined comparison
operators: :
bool operator ==(System.Delegate x, System.Delegate y);
bool operator !=(System.Delegate x, System.Delegate y);
Two delegate instances are considered equal as follows:
?If either of the delegate instances is null, they are equal if and only
if both are null.
C# LANGUAGE SPECIFICATION
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?If either of the delegate instances has an invocation list (?2.1)
containing one entry, they are equal if
and only if the other also has an invocation list containing one entry, and
either:
?Both refer to the same static method, or
?Both refer to the same non-static method on the same target object.
?If either of the delegate instances has an invocation list containing two
or more entries, those instances
are equal if and only if their invocation lists are the same length, and
each entry in one?s invocation list
is equal to the corresponding entry, in order, in the other?s invocation
list.
Delegates of different types can be considered equal by the above
definition, as long as they have the same
return type and parameter types.