how can i add confirm box in asp.net

Question

hello guys 

i am creating a project in asp.net 
and is that project i need to delete record with confirm box 
for example, if i press the delete button then confirm box show me this msg like "Are  you sure you want to delete" if i press OK then delete that record and if i press Cencel then record will not delete ....

so plz help me and guide me  and provide me the source code about perticuler task if u can ...

Thanks.