Open CHM (help file) in C#
I'm trying to open help file (chm extension) in C#. File.Open(@"//help.chm",FileMode.Open, FileAccess.Read, FileShare.Read); and FileStream fileStream = new FileStream(@"c:\help.chm", FileMode.Open); doesn't work :( abhilash You can use - System.Windows.Forms.Help.ShowHelp(Control, String) So assuming you are in a Form/Control Help.ShowHelp(this, "file://c:\\helpfiles\\help.chm"); ShowHelp method also provides overloads to go to specific topic and help page located inside the compiled HTML help file. Read System.Windows.Forms.Help.ShowHelp on MSDN Decompiling a CHM file Is as easy as executing