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;namespace 帮助控件的使用{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        HelpProvider HP;        private void Form1_Load(object sender, EventArgs e)        {            MessageBox.Show("要想获得帮助。请按F1");            HP = new HelpProvider();            string Source = "Help.txt";            HP.HelpNamespace = Source;            HP.SetShowHelp(this, true);        }    }}