Vb.net: clearing the entire contents of an array of strings

Question

I have it:

    Dim split As String() = temp_string.Split(",")

    ''#feed all info into global variables
    patient_id = split(0)
    doc_name = split(1)
    lot__no = split(2)
    patient_name = split(3)

how to clear all split () contents?

Answer 1

Array.Clear(split, 0, split.Length)

Answer 2

ReDim split(-1)

Answer 3

. , . , .

Answer 4

Nothing, . , , .

split = Nothing

, , , , , , .