using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsHelpProvider
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            //获取htm帮助文件的位置
            string strPath = Application.StartupPath.Substring(0, Application.StartupPath.Substring(0,
Application.StartupPath.LastIndexOf("\\")).LastIndexOf("\\"));
            strPath += @"\helpPage.htm";

            //设置helpProvider1的HelpNamespace属性为帮助文件的路径
            helpProvider1.HelpNamespace = strPath;
            MessageBox.Show(strPath);
            //通过SetShowHelp设置是否显示帮助信息
            helpProvider1.SetShowHelp(this, true);
        }
    }
}