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A conversion operator, in C#, is an operator that is used to declare a conversion on a user-defined type so that an object of that type can be converted to or from another user-defined type or basic type. The two different types of user-defined conversions include implicit and explicit conversions.
You can define a member function of a class, called a conversion function, that converts from the type of its class to another specified type.
What is the return type of the conversion operator? Explanation: Conversion operator doesn't have any return type not even void. 2.
The one reason I can think of is to prevent implicit conversions being applied to the thing being cast. In your example, if you said:
bool( "foo" );
then "foo" would be implicitly converted to a string, which would then have the explicit bool conversion you provided applied to it.
This is not possible if the bool operator is a member function, as implicit conversions are not applied to *this. This greatly reduces the possibilities for ambiguity - ambiguities normally being seen as a "bad thing".
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