how I can show the sum of in a datagridview column in asp.net

Question

i have a datagridview which are used to display a transaction record. And one of the columns in datagridview is \"amount\"

girdview codeenter code here

Answer 1

try this...

 int sum = 0;
 for (int i = 0; i < dataGridView1.Rows.Count; ++i)
 {
     sum += Convert.ToInt32(dataGridView1.Rows[i].Cells[2].Value);
 }
GridViewRow row = GridView1.FooterRow; 
((Label)row.FindControl("lbltotal")).Text=sum.ToString();