private void Save_Click(object sender, EventArgs e)
        {
  //******* For database using SQL EXPRESS  ***********
          
            string conString = @"Initial Catalog=database_name;" +
                               @"Data Source=.\SQLEXPRESS;"+
                               @"AttachDbFilename=\database_name.mdf;"+
                               @"Integrated Security=True;"+
                               @"User Instance=True;";
                        

            //******* For Database with SQL Server 2005 installed seperatly********

/*            string conString = @"Initial Catalog=bookdata;" +
                                 @"Data Source=computername\SQLEXPRESS;"+
                                 @"Integrated Security=True;" */
                                               
                                    
            SqlConnection connection = new SqlConnection(conString);
          
            connection.Open();
            String MyString = "INSERT INTO bookentry (AuthorName, BookTitle, Price) VALUES('"+ textBox2.Text+"' ,'"+ textBox3.Text+"' ,'"+ textBox4.Text +"' );";
   
            SqlCommand command = new SqlCommand(MyString,connection);
            command.ExecuteNonQuery();
            connection.Close();
    
            label1.Text = "Successfull";
            
        }