New Post: how to maintain Login name throughout the application?

Hi,

we have create an application using prism with login page and l we have an application using prism with login page. Login id should maintain throughout the application. when i navigate using request navigate i have passed id through query string. when i returned from one page to another page it will return as null.

can any one help to solve this problem through maintain the login id through out application?

Regards,
Raj.