Update data controls whenever update occuer in SQL table
<p>my question is very simple .
say , I have a grid or combo box , its databounded with a table in sql server database.
I wish when ever there occur some update  in data table it refresh the grid .
I did it already with timer but doesn't it consuming resources by sending request after each time out ?
What are the possibilities in experts opinion to get this job done .</p>
