HOW TO BIND TWO TABLES IN SINGLE GRIDVIEW

I HAVE GRIDIVIEW COLUMNS WHICH USED TWO TABLES TO DISPLAY IN GRIDVIEW USING TEMPLATE FIELD

tABLE1 HAS DIRECT QUERY

GV1.DATASOURCE=from r in DC.oRDER_daTA_tABLE where _pNo.Contains(r._DOC_No) & _InputToQuery.Contains(r._Order_No) & (r._InvoiceStatus != 'R') select r);
GV1.DATABIND();

TO CALL TABLE2(tABLE2 IS PRESENT IN sp),FOR BINDING IN SAME GRIDVIEW
hOW TO CALL tABLE2 FOR SAME GRIDVIEW???

ONLY IF BOTH ON SAME SP I CAN BIND USING TEMPLATE FIELD...