SSRS RDP- Controller and DP Only

I’m building an SSRS report with data source as report data provider. I have created the controller, contract and DP class. I have also created a form that will act as the contract. In this way, I can design more my parameter form . I have passed values from my form to my controller class main method. How can I pass these values to DP class process report method, without using the contract class? or should i still use the contract class ?

thanks, appreciate your help/

Why would you want to avoid the data contract class? It exists exactly for this purpose. Please use it.