Question

I want to display a .CHM help file when clicking on a button in VB.NET. Could anyone show me code how to do this?

Private Sub cmdHelp_Click(ByVal sender As System.Objects, Byval e As System.EventArgs)Handles cmdHelp.Click
   'Please help provide some code
End Sub

Answer 1

Doing a Process.Start with a verb of open does the trick:

Module Module1

    Sub Main()
        Dim p As New Process()
        Dim psi As New ProcessStartInfo("path to my CHM file")
        psi.Verb = "open"
        p.StartInfo = psi
        p.Start()

        Console.ReadKey()
    End Sub

End Module

Note that .chm files are heavily restricted by the OS from about WinXP SP3 (SP2?) onwards – they are considered to be a reasonble security risk, so you can’t open them directly from a network or remote location. You will need to code accordingly, and expect exceptions when trying to open them.