20 columns of datagridview want to display 1st 10 columns an

Question

this my current Output

---

Col 1|Col 2|Col 3|Col 4|Col 5|Col 6|Col 7|Col 8|Col 9|Col 10|Col 11|Col 12|

---

what I Want

----------------------------------------------------------- 

Col 1|Col 2|Col 3|Col 4|Col 5|Col 6|

-----------------------------------------------------------

Col 7|Col 8|Col 9|Col 10|Col 11|Col 12|

-----------------------------------------------------------