public static List <Staff> SearchStaff(string searchString)
{
searchString = searchString.ToLower();
return(Staffs
.Where(s => s.FirstName.ToLower().Contains(searchString) || s.LastName.ToLower().Contains(searchString))
.ToList());
}
public static bool StaffExists(string firstname, string lastname)
{
return(Staffs
.Where(s => s.FirstName == firstname && s.LastName == lastname)
.Count() > 0);
}