protected void Binder()
{
DataClasses2DataContext da = new DataClasses2DataContext();
GridView1.DataSource = da.BookInfo.ToList();
GridView1.DataBind();
}
protected void Button1_Click(object sender, EventArgs e)
{
DataClasses2DataContext da = new DataClasses2DataContext();
BookInfo book = new BookInfo();
book.ID = TextBox1.Text;
book.Name = TextBox2.Text;
book.Author = TextBox3.Text;
book.Press = TextBox4.Text;
da.BookInfo.InsertOnSubmit(book);
da.SubmitChanges();
Binder();
TextBox1.Text = "";
TextBox2.Text = "";
TextBox3.Text = "";
TextBox4.Text = "";
}