Hi Everyone, 

I have site where I used authorize.net as a payment gateway Now what happening I want to charge credit card instantly and I don't want to wait or do authcapture transaction. Is there a any way in API. to directly charge credit card . As what happen I am selling services if customer entered invalid card with valid format it proceed without appoved and customer getting access to my servcies and then after invalid card get declined by autorize.net. So I need some thing Prior to it.

Please help me on this. I am working in C# language.