ASP。NET MVC -重定向到正确的成员提供程序

I have an ASP.NET MVC 3 application with buyer and seller functionalities. The buyer and seller 'security' databases are separated and there are different membership providers (with different requirements) for each. The MVC application is broken into areas, with one for buyers and one for sellers (with the addition of some common stuff). Everything is working fine right now as I have different login screens for buyers and sellers. A requirement has changed whereby I need to use the same login screen (and reset password screen) for both buyers and sellers.I have an ASP.NET MVC 3 application with buyer