Dynamically read value of a property from a structure or class.

Ok, I pass in an unknown structure into a function.  I can get the name of the structue, and the name of each property within.  How do I get the values?  

    Public Sub GetStructure(ByRef oStructure As Object)
        Dim tStructure As Type = oStructure.GetType
        Dim sTempFieldName As Reflection.FieldInfo
        Dim oValue As Object

        Try
            Console.Write("Structure Name: " & tStructure.Name)

            'for each item in structure, get it's name and value
            For Each sTempFieldName In tStructure.GetFields
                oValue = ?  'Value of oStructure for current field sTempFieldName
                Console.Write("  Variable Name: " & sTempFieldName.Name & " - Value: " & oValue)
            Next
        Catch ex As Exception

        End Try
    End Sub