?
Solved

Sensing NT network connection

Posted on 1999-01-05
2
Medium Priority
?
161 Views
Last Modified: 2010-05-03
Is there a way in VB that I can test to determine whether or not the host system is currently logged onto a network?  (Specifically, NT).
0
Comment
Question by:harrrj
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 13

Expert Comment

by:Mirkwood
ID: 1454078
Take a look at this site. It contains kinds of code about  NT including what you want

http://www.netfokus.dk/vbadmincode/codevb.html
0
 
LVL 1

Accepted Solution

by:
NoCheese earned 400 total points
ID: 1454079
Keep in mind that an NT workstation is always logged onto a network, even when it is standalone, it is part of it's own local domain.

If you want to see if a user is logged on to the local machine or an external network such as a domain, is to compare the environment variable %COMPUTERNAME% against %USERDOMAIN%.  If they are the same, the user is logged in with a local account.  If they are different they are logged in to an external domain.

That is just half of the puzzle.  Once you have determined that the user is logged into an external domain, you need to find out if the user was actually validated, or logged in with cached credentials because they are currently disconnected.  Retreive the variable %LOGONSERVER%, append "\NETLOGON" to the end of it, and use that as the server path in the WNetGetUser API.  If the return value is NON "0", then the user is disconeccted.
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When trying to find the cause of a problem in VBA or VB6 it's often valuable to know what procedures were executed prior to the error. You can use the Call Stack for that but it is often inadequate because it may show procedures you aren't intereste…
You can of course define an array to hold data that is of a particular type like an array of Strings to hold customer names or an array of Doubles to hold customer sales, but what do you do if you want to coordinate that data? This article describes…
As developers, we are not limited to the functions provided by the VBA language. In addition, we can call the functions that are part of the Windows operating system. These functions are part of the Windows API (Application Programming Interface). U…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…
Suggested Courses

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question