i guess this is what you are looking for. Accept it as answer if it helped you
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Text;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string strcon = ConfigurationManager.ConnectionStrings["ConnectionStringdb"].ConnectionString;
using (SqlConnection con = new SqlConnection(strcon))
{
SqlCommand cmd = new SqlCommand("USP_datamanipulation", con);
cmd.CommandType = CommandType.StoredProcedure;
con.Open();
GridView1.DataSource = cmd.ExecuteReader();
GridView1.DataBind();
con.Close();
}
}
}
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
for (int i = 0; i < GridView1.Rows.Count; i++)
{
GridView1.Rows[i].Cells[3].Text = Convert.ToString(Convert.ToDecimal(GridView1.Rows[i].Cells[1].Text) * Convert.ToDecimal(GridView1.Rows[i].Cells[2].Text));
}
}
}
id quantity priceperunit total
1 5 0.25 1.25
2 10 2.25 22.50
3 15 2.15 32.25
4 20 2.25 45.50