Many to Many LINQ TO SQL Query

I have the following tables:

Users

Roles

UserRoles

开发者_JAVA百科 MenuItems

RoleMenuItems

A User can have multiple Roles and a MenuItem can be accessed by multiple Roles. Now I want to write a method as follows:

public IList<MenuItems> GetMenuItems(UserRoles userRoles)
{
   var menus = // LINQ query to get the MenuItems by UserRoles 

   return menus.ToList();
}

Is there a way to do this?

userRoles.SelectMany(i => i.MenuItems);