Как использовать переключатели ( : ? ) в LINQ ?

List<Student> stuList = new List<Student>();

stuList.Add(new Student() { ID = 1, FName = "Shakiy",Result = 'P' });

stuList.Add(new Student() { ID = 2, FName = "Mary", Result = 'P' });

stuList.Add(new Student() { ID = 3, FName = "Bill", Result = 'F' });

stuList.Add(new Student() { ID = 4, FName = "Samantha", Result = 'F' });

stuList.Add(new Student() { ID = 5, FName = "Mary", Result = 'P' });

stuList.Add(new Student() { ID = 6, FName = "John", Result = 'O' });

var slist = from stu in stuList

             select new { Name = stu.FName, Result = stu.Result  == 'P' ? "Pass" :

                 stu.Result == 'F' ? "Fail" : "On Hold" };

foreach (var list in slist)

{

    // print name and result

}

        Dim stuList As New List(Of Student)()

        stuList.Add(New Student() With {.ID = 1, .FName = "Shakiy", .Result = "P"c})

        stuList.Add(New Student() With {.ID = 2, .FName = "Mary", .Result = "P"c})

        stuList.Add(New Student() With {.ID = 3, .FName = "Bill", .Result = "F"c})

        stuList.Add(New Student() With {.ID = 4, .FName = "Samantha", .Result = "F"c})

        stuList.Add(New Student() With {.ID = 5, .FName = "Mary", .Result = "P"c})

        stuList.Add(New Student() With {.ID = 6, .FName = "John", .Result = "O"c})

        Dim slist = _

         From stu In stuList _

         Select New With {Key .Name = stu.FName, Key .Result = If(stu.Result = "P"c, "Pass", If(stu.Result = "F"c, "Fail", "On Hold"))}

        For Each list In slist

            ' print name and result

        Next list