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I'm currently creating an application for our helpdesk to assist in trouble shooting. I work for a Native American tribe and we have field offices spread out in the Southeast corner of Oklahoma, and we get a lot of calls from people who are not real computer savvy. The application will be installed on the user's computers that are outside of our domain (we have set up a policy in our AD to place a background on the domain user's computer to display their network information). Currently I have the application displaying the user name, the ip, and network connectivity, but I would like to have it be able to release and renew the ip address since that is sometimes the most difficult thing to walk people through over the phone.
Is there any simple way to do this?
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Hi Dave,
I dare not say that this is the best way, but it may work for you:
<br />
Public Function ExecuteDosCommand(ByVal cmd As String)<br />
'activate dos<br />
AppActivate("C:\WINNT\system32\cmd.exe")<br />
'send the command (for example: "ipconfig /release")<br />
SendKeys.Send(cmd & vbCrLf)<br />
'Flush the buffer, just for safety<br />
SendKeys.Flush()<br />
cmd = ""<br />
End Function<br />
The path to cmd.exe may not be correct, but I am sure you'll figure it out.
Hope it helps,
Johan
My advice is free, and you may get what you paid for.
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How about :-
Public Sub RenewIP()<br />
process.start("ipconfig /renew")<br />
<br />
End Sub
Steve Jowett
-------------------------
Sometimes a man who deserves to be looked down upon because he is a fool, is only despised only because he is an 'I.T. Consultant'
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So I was right not to dare claim that my way was the best 
I didn't know about this one. However this function asks for a file name. In your example you pass the dos command straight to the function though. Will it not throw a "file not found" exception?
My advice is free, and you may get what you paid for.
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Yes you are right, so replace the Process.Start with :-
Shell("IPConfig /renew", AppWinStyle.NormalFocus, True)
For belt and braces you could try :-
Private Sub RenewIP()<br />
Dim sCommand As String = System.Environment.SystemDirectory & "\IPConfig.exe /renew"<br />
Shell(sCommand, AppWinStyle.NormalFocus, True)<br />
End Sub
Steve Jowett
-------------------------
Sometimes a man who deserves to be looked down upon because he is a fool, is only despised only because he is an 'I.T. Consultant'
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So Dave, instead of my answer to your problem, I advise you to use the one Steve suggested in his answers to my reply.
My advice is free, and you may get what you paid for.
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First of all, thanks for all the help. Now, I showed the completed app to the rest of the guys in IT and we came up with the idea of showing the subnet mask and the default gateway (Maybe the MAC, but we really haven't decided). I've found some code calling a WMI, but I can't seem to get it to work right.
Any suggestions?
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Aptiva Dave wrote: but I would like to have it be able to release and renew the ip address since that is sometimes the most difficult thing to walk people through over the phone.
Is there any simple way to do this?
Very easy. You don't even need to write any code. Just create a batch file and use this:
%systemroot%\system32\ipconfig /release
%systemroot%\system32\ipconfig /renew
Call the file iprenew.cmd and drop the file in the C:\Windows folder. When the user needs to renew their IP address, just tell them to click on Start, then Run, and type iprenew and hit Enter.
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The main issue with creating this app is because we have noticed throughout the years that our users just are not that comfortable with using the command prompt. They are very visual people. I also put into this app their computer name and their user name, along with a function to ping an outside address (right now yahoo.com) to test whether they are connected to the internet. Hopefully it should save us some time.
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i know this is waaaay old but here's a cleaner ".Net version" anyway
Public Sub ReleaseIP()
Process.Start(System.Environment.SystemDirectory & "\IPConfig.exe", "/release")
Sleep(3) ' 3 Seconds to give ipconfig time to finish
End Sub
Public Sub RenewIP()
Process.Start(System.Environment.SystemDirectory & "\IPConfig.exe", "/renew")
Sleep(3) ' 3 seconds to give ipconfig time to finish
End Sub
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I am already finish my VB.net project, but I want to protect my project with like CD key, so people can not use my project if they do not know the key.
The problem is I dont know how to make the key.
May someone help me please?
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There's no one set way of doing it.
"I guess it's what separates the professionals from the drag and drop, girly wirly, namby pamby, wishy washy, can't code for crap types." - Pete O'Hanlon
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Winarto wrote: The problem is I dont know how to make the key.
"THE" key? Think about that now. What's to stop anyone from just writing down "THE" key and sending it with every copy of the CD they make??
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I am already finish my VB.net project, but I want to protect my project with like CD key, so people can not use my project if they do not know the key.
The problem is I dont know how to make the key.
May someone help me please?
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Hi,
In reference to your query I would like to mention that there are some common techniques used to design CD or software Keys.
Some common techniques are just to use random math stuff. So lets say you have a serial like this: XXXX-XXXX-XXXX-XXXX
You could randomly generate numbers (either decimal or hex format), for the first 3 groups. Set Group # 4 to the answer of (Groups 1 and 2) / Group 3. You could add random constants or do other funny things.
Another technique is to randomly generate what cryptologist call a "salt". So using the same format as above, you would randomly generate group #1, concatenate the "salt" with some other string that you hard-code, and then put that whole string through an md5 (or other) one-way hashing function. Then the remaining 3 groups can be some defined portion of the md5 hash. Sometimes companies require the buyer to "telephone activate", where they have to give their name, and then the company name to generates them a serial using their name as a salt to some serial generator. In this way the user's information is slightly more tied into the whole scenario. If you want to take it one step further, use their credit card number as the salt, this will make them more unlikely to just share their activation information with others.
I hope this would help to initiate the things. For code snippets you may search on Google.
Have a nice day  .
Regards,
John Adams
ComponentOne LLC
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Try not to post the same question twice. Looks like you might have double clicked on submitting.
"I guess it's what separates the professionals from the drag and drop, girly wirly, namby pamby, wishy washy, can't code for crap types." - Pete O'Hanlon
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A class was created, and objects added to a listbox to form an arraylist.
Ojects were added to arraylist as in
Dim item As items
For Each item In form1.Arraylistlist
Me.Listbox1.Items.Add(item)
Next
How can I delete an object from the arraylist when displayed in Listbox1?
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Hi,
you can add and remove items to/from any collection using the appropriate methods,
see documentation.
However, when you try to modify a collection while you are enumerating it (as in
a for each), you will get an exception.
There are many remedies:
- don't use for each in this case, use a for or a while loop
- create a Clone of the list for the enumeration
- use a temporary collection to remember which items will have to be deleted afterwards
Luc Pattyn [Forum Guidelines] [My Articles]
This month's tips:
- before you ask a question here, search CodeProject, then Google;
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get;
- use PRE tags to preserve formatting when showing multi-line code snippets.
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How can I attach or access a word document (or any other file) from a VB application (or attach a file).
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You cannot "attach" a file to a VB application. What are you looking to do with this file?
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From the menustrip on the help tab, I would like to link a work document to explain or give a user guide to the application
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Process.Start("MyDocument.Doc") would load the document using the associated program although I would suggest using one of the many free HTML Compilers (creating CHM file) or a help file creator.
Failing that I would save the final document as a PDF file.
Steve Jowett
-------------------------
Sometimes a man who deserves to be looked down upon because he is a fool, is only despised only because he is an 'I.T. Consultant'
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I need to create a headerTemplate, itemTemplate and footerTemplate in vb.net. I went to the MSDN site from the Help/search menu in Visual Basic.Net 2005 and it shows a good example of how to create a header template in VB.net, but when it shows how to do the itemTemplate it shows it in ASP. This is a business systems program no a web application. Is there a good example in VB.NET of how to do the item template?
If you know how to do this can you show me?
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Header, Footer, and Item templates all belong to ASP.NET web forms, not windows forms. What you're looking at is useless to you in a windows forms app.
There are no template classes for the DataGridView control. What are looking to do??
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I am going to do it using dataColumns and DataRows.
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