14.9.8 Delegate equality operators_delegatesequal-优快云博客

本文详细介绍了C#中委托类型的预定义比较操作符及其工作原理。包括如何判断两个委托实例是否相等，涉及到委托实例为null的情况、静态方法引用、非静态方法引用以及包含多个条目的调用列表的比较。

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
168
?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.