Private Sub tenthuoc_AfterUpdate()
If IsNull(tenthuoc) Then
MsgBox "Chöa nhaäp teân thuoác ", , "Chu y"
Exit Sub
End If
tenthuoc = StrConv(NGHIEMTRANG(tenthuoc, 0), 3)
Mathuoc = Trim(tenthuoc & "-" & Hamlg & "-" & dongia & "-" & nhom)
Dim Rdmt As Recordset
Set Rdmt =...