how to edit the details list in grid view ?

private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)

{

//SqlConnection con = new SqlConnection("Data Source=SIVA-PC\\SQLEXPRESS;Initial Catalog=bookshop;Integrated Security=True");

//con.Open();

//string s = ("select * from Bookshop");

//SqlDataAdapter da = new SqlDataAdapter(s, con);

//DataSet ds = new DataSet();

//da.Fill(ds,"b");

//dataGridView1.DataSource = ds.Tables["b"];

//dataGridView1.DataMember = "Bookshop";

//con.Close();

}

private void BookList_Load(object sender, EventArgs e)

{

// TODO: This line of code loads data into the 'bookshopDataSet.Bookshop' table. You can move, or remove it, as needed.

this.bookshopTableAdapter.Fill(this.bookshopDataSet.Bookshop);

}

private void btnsave_Click(object sender, EventArgs e)

{

}

private void btnedit_Click(object sender, EventArgs e)

{

SqlConnection con = new SqlConnection("Data Source=SIVA-PC\\SQLEXPRESS;Initial Catalog=bookshop;Integrated Security=True");

con.Open();

string s = ("select * from Bookshop");

SqlDataAdapter da = new SqlDataAdapter(s, con);

DataSet ds = new DataSet();

da.Fill(ds, "b");

dataGridView1.DataSource = ds.Tables["b"];

}

}

}