How to access values of footer textboxes on Button Click Event(Button is outside the Gridview)...

Question

How to access values of footer textboxes on Button Click Event(Button is outside the Gridview)...Footer Text Boxes are generated dynamically in Dynamic GridView...... Footer Text Boxes may be very depending on Column in Table.....


IN 1st DROP DOWN LIST DATABASE NAMES ARE GENERATED DYNAMICALLY

IN 2nd DROPDOWN LIST TABLE NAMES ARE GENERATED DYNAMICALLY DEPENDING ON 1st DROPDOWNLIST

GRIDVIEW IS DISPLAYED BASED ON TABLE NAME