datagrid with sum query

Hi Amitesh,


Try this...


App.config




       
   



Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.OleDb;
namespace Sum_in_datagridview
{
    public partial class Form1 : Form
    {
        string ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["dsn"];
        OleDbCommand com;
        OleDbDataAdapter oledbda;
        DataSet ds;
        string str;
        public Form1()
        {
            InitializeComponent();
        }

      

        private void Form1_Load(object sender, EventArgs e)
        {
            bindgrid();
        }
        private void bindgrid()
        {
            OleDbConnection con = new OleDbConnection(ConnectionString);
            con.Open();
            str = "select * from product";
            com = new OleDbCommand(str, con);
            oledbda = new OleDbDataAdapter(com);
            ds = new DataSet();
            oledbda.Fill(ds, "product");
            dataGridView1.DataMember = "product";
            dataGridView1.DataSource = ds;
            con.Close();
        }

        private void btn_sum_Click(object sender, EventArgs e)
        {
            int sum = 0;
            for (int i = 0; i < dataGridView1.Rows.Count; ++i)
            {
                sum += Convert.ToInt32(dataGridView1.Rows[i].Cells[1].Value);
            }
            label1.Text = "Total sum is:"+sum.ToString();


        }
    }
}


Thanks
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