Calculating Score of multiple choice question in grid view

com = new SqlCommand("update Exam set Score='" + Score + "' where PCode=<Condition>

Condition means the primary key value of that row
create one invisible lable inside a grid and store pCode and then pass that 
PCode of every question there

 com = new SqlCommand("update Exam set Score='" + Score + "' where PCode='" + Label14.Text + "'", con);
can u plz tell me 
How to update total result?
and
how to create table update means columns ?sql server
:(

Hi Chinna Netha,

Read this link it may help you

http://forums.asp.net/t/2008563.aspx?Calculating+Score+of+multiple+choice+question+in+a+gridview