DATABASE query

hi i am working on a database connected with c# code, i want to show crystal report, i have made a connection with SQLite database file,now my "report1.rdlc" looks like

Code:

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NAME  ADDRESS  CONTACT  AMOUNT

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now i want to add all the amounts in the AMOUNT column but confused how to do that....
kindly help me out

Perhaps write a loop to read each row of the DB, then total the AMOUNT column?

this is my form1 code

Code:

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private void Form1_Load(object sender, EventArgs e)
        {
            // TODO: This line of code loads data into the 'DataBDataSet.Accounts' table. You can move, or remove it, as needed.
            this.AccountsTableAdapter.Fill(this.DataBDataSet.Accounts);
            this.reportViewer1.RefreshReport();
        }

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i am going to save the result in textbox in report viewer,if i access database here in this event i cannot access the textbox in which i have to show the result...
and i just want that amount having certain criteria means the amount of year 2010 by deploying a check then the results i get,want to show that amount having year 2010 so i have to search through the fields of report viewer