Private Sub cmbInsert_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmbInsert.Click
   If TextBox_A.Text <> "" And TextBox_B <> "" And  TextBox_C.Text ="" And TextBox_D = "" Then

      objconn = New MySqlConnection
      objconn.ConnectionString = "server=localhost; username=root; password=; database=red_cheese_pizza_database"
      objconn.Open()
            With objcmd
                .Connection = objconn
                .CommandText = "insert query here"
                .ExecuteNonQuery()
            End With
       objconn.Close()
       MsgBox("Data Added!", MsgBoxStyle.Information + MsgBoxStyle.OkOnly, "SUCCESS")

   ElseIf TextBox_C.Text <> "" And TextBox_D <> "" And  TextBox_A.Text ="" And TextBox_B = "" Then

      objconn = New MySqlConnection
      objconn.ConnectionString = "server=localhost; username=root; password=; database=red_cheese_pizza_database"
      objconn.Open()
            With objcmd
                .Connection = objconn
                .CommandText = "insert query here"
                .ExecuteNonQuery()
            End With
       objconn.Close()
      MsgBox("Data Added!", MsgBoxStyle.Information + MsgBoxStyle.OkOnly, "SUCCESS")

   End If
 End Sub