Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

open command prompt and run command in vb

Posted on 2014-10-10
4
Medium Priority
?
178 Views
Last Modified: 2015-01-18
Hello,

i am trying to simply open a command prompt and run a command but its not running just flashing a command prompt can someone help


       Dim p As New Process()
        p.StartInfo.StandardOutputEncoding = System.Text.Encoding.ASCII
        p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden
        p.StartInfo.RedirectStandardOutput = True
        p.StartInfo.UseShellExecute = False
        p.StartInfo.FileName = "cmd.exe"
        p.StartInfo.WorkingDirectory = "c:\Windows\Microsoft.NET\Framework\v4.0.30319\"
        p.StartInfo.Arguments = "aspnet_regiis -pef" & "connectionStrings" & Path & cmbApps.Text
        Try
            p.Start()
            Dim output As String = p.StandardOutput.Read()
            lstdata.Items.Add(output)
            p.WaitForExit()
        Catch ex As Exception
            MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
        Finally

            If Not (p Is Nothing) Then
                p.Dispose()
            End If

        End Try

Open in new window

0
Comment
Question by:Chris Jones
  • 3
4 Comments
 
LVL 22

Expert Comment

by:rspahitz
ID: 40373718
When using the old Shell command, you would do something like this:

"cmd /c DOSCmd"
to run the command and close the window
or
"cmd /k DOSCmd"
to run the command and keep the window open.

Does that work here?

p.StartInfo.FileName = "cmd.exe /k"

--
Most likely, there's a DOS syntax error so keeping the window open will probably help you identify what's wrong.

My guess would be that you need a space after (and maybe before) "connectionStrings" -> "connectionStrings "
0
 
LVL 22

Expert Comment

by:rspahitz
ID: 40373729
Another way to help is to first convert this into a value:

"aspnet_regiis -pef" & "connectionStrings" & Path & cmbApps.Text

Then open a cmd window from the start button and enter:
cmd /k aspnet_regiis -pefconnectionStrings {Path} {cmbApps.Text}

Open in new window


Where the last two parts are the values.  You should see the error in the command window
0
 
LVL 1

Author Comment

by:Chris Jones
ID: 40373772
Hello rspahitz

this did work when i ran from the start menu and command prompt without the /k

but the above did not work

"cmd /c DOSCmd" 
to run the command and close the window
or
"cmd /k DOSCmd"
to run the command and keep the window open.

Does that work here?

p.StartInfo.FileName = "cmd.exe /k"

Open in new window

0
 
LVL 22

Accepted Solution

by:
rspahitz earned 2000 total points
ID: 40373937
I've never done it the way you're doing it, but that's probably the "new way".
For now you can see if this works:

Shell "cmd /k aspnet_regiis -pef" & "connectionStrings" & Path & cmbApps.Text

If so, you may see the error message then you can go back to your code so you can capture the process info.

Otherwise, see if you can locate a method to KeepWindowOpen or possibly this:

p.StartInfo.Arguments = "aspnet_regiis -pef" & "connectionStrings" & Path & cmbApps.Text & " > C:\errorfile.txt"

After the window flashes (runs the command and closes the window!) then you should have a file called errorfile.txt located on the root of your C-drive which might clue you in on the problem.
0

Featured Post

NFR key for Veeam Agent for Linux

Veeam is happy to provide a free NFR license for one year.  It allows for the non‑production use and valid for five workstations and two servers. Veeam Agent for Linux is a simple backup tool for your Linux installations, both on‑premises and in the public cloud.

Question has a verified solution.

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

In my previous two articles we discussed Binary Serialization (http://www.experts-exchange.com/A_4362.html) and XML Serialization (http://www.experts-exchange.com/A_4425.html). In this article we will try to know more about SOAP (Simple Object Acces…
It’s quite interesting for me as I worked with Excel using vb.net for some time. Here are some topics which I know want to share with others whom this might help. First of all if you are working with Excel then you need to Download the Following …
This video shows how to quickly and easily deploy an email signature for all users in Office 365 and prevent it from being added to replies and forwards. (the resulting signature is applied on the server level in Exchange Online) The email signat…
When cloud platforms entered the scene, users and companies jumped on board to take advantage of the many benefits, like the ability to work and connect with company information from various locations. What many didn't foresee was the increased risk…
Suggested Courses
Course of the Month15 days, 23 hours left to enroll

580 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