Updating dabase from Radgridview

hi 

i have a problem i want save my data from gridview to dabase including update, deleting a row and adding a row

i populate radgridview from a datatable.

my delete button is click event on a image 

and my addnew row is the button from da radgridview

the add new row works almost fine (the click event are not firing on the images.) but add the row to the database.

the delete "button" remove the row from datagrid but is not working removing from the database only radgrid,

is there way i can add delete and update radgridview and then i press a button and update the database?