C# cast type help

I wrote a test method on my inherited Membership Provider object a开发者_开发问答nd want to call that method by actually casting up the membership provider to my object. Membership is not of type MembershipProvider. It is the default Membership object.

 ((MyMembershipProvider)Membership).Test();

Thanks in advance for the help.

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Sure it is possible. But if you are implementing custom membership provider, then you forgot to take property Provider from your Membership object. Like this:

((MyMembershipProvider)Membership.Provider).Test();

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Try this:

((Membership)MyMembershipProvider).Test();

I'm guessing here, but I think your MemberShip is the class type and the MyMembershipProvider is a reference to a class (an object). You've just got your cast operands backwards.

In otherwords, you may be trying to do something like this:

int myVal = 1;
double mySecondVal = (myVal)double; // fail

double mySecondVal = (double)myVal; // success

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It is possible, if the Membership object is a MyMembershipProvider type, and it has the .Test() method. You can check this like that:

if (Membership is MyMembershipProvider)
    (Membership as MyMembershipProvider).Test();