Datagridview edit and update I C#.net

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.Configuration;

using System.Data.SqlClient;

namespace savedata

{

    public partial class Form1 : Form

    {

        SqlConnection con = newSqlConnection(ConfigurationManager.ConnectionStrings["Sqlcon"].ConnectionString);

        public Form1()

        {

            InitializeComponent();

            Bind();

        }

        private void Clear()

        {

            txtName.Text = string.Empty;

            txtLocation.Text = string.Empty;

        }

        private void btnSave_Click(object sender, EventArgs e)

        {

            con.Open();

            SqlCommand cmd = new SqlCommand("Insert Into Test_Data(Name,Location) Values (@Name,@Location)", con);

            cmd.Parameters.AddWithValue("Name", txtName.Text);

            cmd.Parameters.AddWithValue("Location", txtLocation.Text);

            cmd.ExecuteNonQuery();

            con.Close();

            MessageBox.Show("Inserted sucessfully");

            Bind();

            Clear();

        }

        private void Bind()

        {

            con.Open();

            SqlDataAdapter da = new SqlDataAdapter("select * from Test_Data", con);

            DataTable dt = new DataTable();

            da.Fill(dt);

            dataGridView1.DataSource = dt;

            con.Close();

        }

        private void btnDelete_Click(object sender, EventArgs e)

        {

            SqlCommand delcmd = new SqlCommand();

            if (dataGridView1.Rows.Count > 1 && dataGridView1.SelectedRows[0].Index != dataGridView1.Rows.Count - 1)

            {

                delcmd.CommandText = "DELETE FROM Test_Data WHERE ID=" + dataGridView1.SelectedRows[0].Cells[0].Value.ToString() + "";

                con.Open();

                delcmd.Connection = con;

                delcmd.ExecuteNonQuery();

                con.Close();

                dataGridView1.Rows.RemoveAt(dataGridView1.SelectedRows[0].Index);

                MessageBox.Show("Row Deleted");

            }

            Bind();

        }

        private void btnUpdate_Click(object sender, EventArgs e)

        {

            con.Open();

            SqlCommand cmd = new SqlCommand("Update Test_Data set Name=@Name,Location=@Location Where(Name=@Name)", con);

            cmd.Parameters.AddWithValue("@Name", txtName.Text);

            cmd.Parameters.AddWithValue("@Location", txtLocation.Text);

            cmd.ExecuteNonQuery();

            MessageBox.Show("updated......");

            con.Close();

            Bind();

            Clear();

        }

        private void btnEdit_Click_1(object sender, EventArgs e)

        {

            int i;

            i = dataGridView1.SelectedCells[0].RowIndex;

            txtName.Text = dataGridView1.Rows[i].Cells[1].Value.ToString();

            txtLocation.Text = dataGridView1.Rows[i].Cells[2].Value.ToString();

        }

    }

}

Then run the application you will get output like below: