Open CHM (help file) in C#

Question

I\'m trying to open help file (chm extension) in C#.

File.Open(@\"//help.chm\",FileMode.Open, FileAccess.Read, FileShare.Read);

and

Answer 1

 Help.ShowHelp(this, AppDomain.CurrentDomain.BaseDirectory+"\\test.chm", HelpNavigator.Topic, "Welcome.htm");

Welcome is id of the welcome age in chm file