如何在C#中调用帮助文档.chm

using System;
using System.Text;
using System.Diagnostics;
namespace HelloNamespace
{
    public class A
    {
        static void Main(string[] args)
        {
            Process.Start(@"C:\windows\Help\iexplore.chm");
        }

    }

}
System.Diagnostics.Process.Start(Application.StartupPath.ToString() + "\\a.chm"); //相对路径, /bin/debug/a.chm