I already posted this answer in the link provided by thatraja.
How to open winform by clicking hyperlink in crystal report
It worked perfectly with me, by adding the following code:
Private Sub CRV_ClickPage(ByVal sender As System.Object, ByVal e As CrystalDecisions.Windows.Forms.PageMouseEventArgs) Handles CRV.ClickPage
If e.ObjectInfo.Name = "vouCode" Then
Dim frmToLoad As New Services
frmToLoad.LoadOrders(e.ObjectInfo.Text)
frmToLoad.Show()
End If
End Sub
Where
e.ObjectInfo.Name
will return the IFieldObject name, and
e.ObjectInfo.Text
will return it's text.
Thanks thetraja for submitting the link.