Open a .chm file on local network in a c# application

Question

In my code I am trying to open a helpfile (.chm) from the local network using the following code

private void helpToolStripMenuItem_Click(object sender, EventArgs e)
{
    Help.ShowHelp(this, @"\\server\Helpfiles\HelpFiles.chm");
}

If I wanted to open this .chm outside of my application I needed to add a key to my registry first because of security reasons.

I thought that this would also work for my application, however it still say's cancelled.

How can I open this .chm file and it's content?

Answer 1

You need to alter one of the security settings on the machine. I use the following .reg file to effect the modification:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\HTMLHelp\1.x\ItssRestrictions]
"MaxAllowedZone"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\HTMLHelp\1.x\ItssRestrictions]
"MaxAllowedZone"=dword:00000001

Read all about it here: http://support.microsoft.com/kb/896358