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

Simple do this

Help.ShowHelp(ParentForm, "chmFile.chm", "link.htm");

Answer 2

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 below command in the command prompt.

hh.exe -decompile <target-folder-for-decompiled-content> <source-chm-file>

For Example:

hh.exe -decompile C:\foo\helpchmextracted help.chm

After executing the above command you should find the decompiled content in the C:\foo\helpchmextracted folder.

Answer 3

Well the second line should be ok, if the file is not existent it should throw an exception. Need to be more specific about what you mean by " it doesn't work"

Answer 4

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

Welcome is id of the welcome age in chm file

Answer 5

System.Diagnostics.Process.Start(@"c:\help.chm");

Answer 6

        string helpFileName = @"c:\help.chm";
        if (System.IO.File.Exists(helpFileName))
        {
            Help.ShowHelp(this, helpFileName );                
        }

if this is not work try

        if (System.IO.File.Exists(helpFileName))
        {
            System.Diagnostics.Process.Start(helpFileName);              
        }