C# DataGridView Printing

C# DataGridView Printing

using System;

using System.Data;

using System.Windows.Forms;

using System.Data.SqlClient;

using System.Drawing;

namespace WindowsFormsApplication1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

string connectionString="Data Source=.;

Initial Catalog=pubs;IntegratedSecurity=True";

            string sql = "SELECT * FROM Authors";

            SqlConnection connection = new SqlConnection(connectionString);

            SqlDataAdapter dataadapter = new SqlDataAdapter(sql, connection);

            DataSet ds = new DataSet();

            connection.Open();

            dataadapter.Fill(ds, "Author_table");

            connection.Close();

            dataGridView1.DataSource = ds;

            dataGridView1.DataMember = "Author_table";

        }

        private void button2_Click(object sender, EventArgs e)

        {

            printDocument1.Print();

        }

private void printDocument1_PrintPage(object sender,System.Drawing.Printing.PrintPageEventArgs

e)

        {

            Bitmap bm = new Bitmap(this.dataGridView1.Width, this.dataGridView1.Height);

            dataGridView1.DrawToBitmap(bm, new Rectangle(0, 0, this.dataGridView1.Width,

this.dataGridView1.Height));

            e.Graphics.DrawImage(bm, 0, 0);

        }

    }

}