Logon page suppress in webdynpro application

Dear All,

We know that, In SICF user credentials details can be maintained in logon tab to suppress default logon page of webdynpro application, Is there any way to do the same thing by coding. Our requirement is, we are having separate .net page for login from there we need to pass the user credential to webdynpro application using coding.

Thanks & Regards,

Vinothkumar M