get values from an anonymous type

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VB

I have declared an anonymous type with 2 elements as follows and later filled it. Code is condensed of course.

public StudentNames

Sub FillStudents()
        Dim st = From sts In db.StudentLists Order By studs.Last, studs.First _
                  Select studs.FullName, studs.StudentId

        StudentNames = sts.ToArray
End Sub

How do I get the value of each element
Tried using StudentNames(0,1) and get "Attempted to operate on an array with the incorrect number of dimensions."

I know I could declare StudentNames as a two dimensional array and loop through each st to fill the array, but sts.ToArray is so simple. It works perfect if I use a single dimensioned anonymous type array, but I would like to save the StudentId for later use.

There are a lot of other solutions but this one uses a lot less code both now and later in the program (if I can get it to work).

By the way, I've searched info on anonymous types but they all contain a key, such as:
Dim StudentNames = New With {Key .Name = st.FullName, .Stid = st.StudentId}
which still requires iterating through the query. I would prefer avoiding that if I can.