Converting a Integer to a Integer? (converting a Type to a Nullable(Of Type) Posted on 2013 September 30 by jontas In order to convert a Integer to a nullable interger, all that needs to be done is to call CType Dim int As Integer = 0 Dim intNullable As Integer? = CType(int, Integer?)Dim int As Integer = 0 Dim intNullable As Integer? = CType(int, Integer?)