I have a chm file (Help File).
In Vb6 Msgbox
MsgBox(strMsgPrompt, vbMsgBoxHelpButton + vbExclamation, strMsgTitle, App.HelpFile & ">Popup", LngMessageNumber)
This will show the help file with topic LngMessageNumber in the window Popup (Popup and Main are two windows defination in chm file).
How can i do a similar task in vb.net.