How to Sort a Structure array

Hi everyone i have a stucture array declared as below for picking the best performed subject among three
Option Explicit
Public Type electdetail
reprt As String
subnameName As String
submark As Integer
End Type
Public agrbs() As electdetail


reprt stores the reportcard ID,subnameName stores subject Name and submark stores the subject mark which is what i want to use for sorting the array, Please if you can do Help Thanks