i used this example to open a command prompt from within vb.net 2010
lnk to stackoverflow document
the command prompt opens as expected and i can do directories open commands like regedit etc. without an issue
but what i really want is tftp.exe when i look for it it does not show up, when doing a dir it is not listed when type tftp at command prompt i get the to recognzed command
when comparing to a normal command prompt by type cmd at the run line i can see it in the windows\system32 folder
also when i do a dir from normal command prompt and compare to dir from the cmd prompt opened by vb.net there is a 400+ number of files difference out of close to 3000 files
trying to find out why i cant see all the files here is the actul code i used
Private Sub Button30_Click(sender As System.Object, e As System.EventArgs) Handles Button30.Click
Dim command As String = "tftp -i 192.168.10.177 put test1.bin"
Dim arguments As String = ""
Dim permanent As Boolean = True
Dim p As Process = New Process()
Dim pi As ProcessStartInfo = New ProcessStartInfo()
pi.Arguments = " " + If(permanent = True, "/K", "/C") + " " + command + " " + arguments
pi.FileName = "cmd.exe"
p.StartInfo = pi
p.Start()
End Sub
This seems like a very convuluted approch you are taking, but to answer your question directly, you probably need to set the working directory like so:
pi.WorkingDirectory = "c:\windows\system32"
I have to say though, you might want to reconsider the whole approach of opening a DOS window for the user to type commands. Doesn't see very user friendly.
ok found the answer, it is becuase i am running 64bit windows and when its looking for the tftp.exe it is actually looking in the syswow64 directory and tftp.exe is not in that directory.
since i have this running and compiled for x86 and not 64bit here is the work around
Public Declare Function Wow64DisableWow64FsRedirection Lib "kernel32" (ByRef oldvalue As Long) As Boolean
then
Wow64DisableWow64FsRedirection(0)
after adding tthis to my code the tftp upload works flawlessly
Related
I have a VB.net app where I invoke Import-Module on a PowerShell from within my vb.net Window Application but the error says it could not find the module. Error as below.
Import-Module : The specified module 'MSOnline' was not loaded because no valid module file was found in any module directory.
When I load the same Module by launching the PowerShell externally in the usual way it works fine. Image as below.
The VB script is as below
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim procStartInfo As New ProcessStartInfo
Dim procExecuting As New Process
With procStartInfo
.UseShellExecute = True
.FileName = "powershell.exe"
.WindowStyle = ProcessWindowStyle.Normal
.Verb = "runas" 'add this to prompt for elevation
Dim psscript As String = My.Resources.mymsolPS
procStartInfo.Arguments = psscript
procExecuting = Process.Start(procStartInfo)
End With
End Sub
My PowerShell Script is saved in my.resource as a txt file. My PowerShell Script is as below.
Import-Module Msonline
Connect-msolService
I replaced the PowerShell script to Get-Help and that works only it dosnt work when I use Import-Module Msonline.
One more information that can be shared is the module is stored in the below location.
C:\Windows\System32\WindowsPowerShell\v1.0\Modules\MSOnline\MSOnline.psd1
Any Help is greatly appreciated.
Thanks in Advance
Update 2:
More fiddling with it found some thing which i am not sure if is relevant.
If I launch the powershell from within my VB.net and run the below command I cant see the MSOnline module.
PS C:\windows\system32>> cd $env:WINDIR\System32\WindowsPowerShell\v1.0\Modules\
PS C:\windows\System32\WindowsPowerShell\v1.0\Modules>> dir
If I run the PowerShell directly from my system and run the above script I can see the Module
d----- 11/22/2017 2:59 PM MSOnline
Still a mystery for me which I cant crack. :(
A difference I notice is when launching from your app, or locally, the directory is either your user, or system.. so maybe the way PS is being loaded it can't find the module.
What about if you provide a full path to the module?
I've had much better luck using RunSpace - I use it to pass any powershell commands - here are a snippet from one of the sites and some examples to look at:
'Create the runspace.
Using R As System.Management.Automation.Runspaces.Runspace = _
System.Management.Automation.Runspaces.RunspaceFactory.CreateRunspace()
'Create the pipeline
Using P As System.Management.Automation.Runspaces.Pipeline = R.CreatePipeline()
'Open the runspace.
R.Open()
'Create each command (in this case just one)...
Dim Cmd As New System.Management.Automation.Runspaces.Command("C:\script.ps1", True)
'...and add it to the pipeline.
P.Commands.Add(Cmd)
'Execute the commands and get the response.
Dim Result As System.Collections.ObjectModel.Collection(Of _
System.Management.Automation.PSObject) = P.Invoke()
'Close the runspace.
R.Close()
'Display the result in the console window.
For Each O As System.Management.Automation.PSObject In Result
Console.WriteLine(O.ToString())
Next
End Using
End Using
http://www.winsoft.se/2009/08/execute-a-cmdlet-or-ps1-script-from-visual-basic/
https://social.msdn.microsoft.com/Forums/vstudio/en-US/5d2279c8-e02c-45eb-a631-951c56067bb5/run-powershell-script-from-vbnet?forum=vbgeneral
https://code.msdn.microsoft.com/windowsdesktop/VBPowerShell-6b4f83ea
The last one provides a pretty solid breakdown of what it's doing. Let me know if you can't get it to work, I can try to see if this import works on an app.
I actually found the solution after hours of pain. This is pretty silly solution.
Went I went to my application Properties I found that the Preferred run was set to 32 bit hence when my PowerShell was launched from within it was looking for the module under SYSWOW where its suppose to look it under System32. I unchecked the "Preferred 32 BIT" and not it imports the module from system 32.
Thought I should share this silly miss so that others should not suffer the same.
I'm writing a program to interface with an inspection machine. The machine has the ability to output command lines during its program run.
The machine has an interface application which allows the passing and automatic start of programs into the machine. I can get this to work with a single instance, however I would like to be able to select several programs for it to run back to back.
Below is the code to pass a single program to the machine:
im ProgramName As String = cbProgram.Text
Dim ProgURL = GetXMLNode(1, ProgramName)
Dim exeDir As New IO.FileInfo(Reflection.Assembly.GetExecutingAssembly.FullName)
Dim EXEPath = IO.Path.Combine(exeDir.DirectoryName, "iscmd.exe")
' New ProcessStartInfo created
Dim p As New ProcessStartInfo
' Specify the location of the binary
p.FileName = EXEPath
' Use these arguments for the process
p.Arguments = " /run""" & ProgURL & """ /nowait"
' Use a hidden window
p.WindowStyle = ProcessWindowStyle.Hidden
' Start the process
Dim ISCMD As Process = Process.Start(p)
ISCMD.WaitForExit()
MsgBox("PING!")
The PING will show immediately after the program has been passed to the machine (but not completed). What I want to be able to do is build an array of programs and launch this process once each time a program has completed. Is it possible to use a command line from the machine to signal to my software that the next program can be started? Below is a screenshot the machines command line.
I'm creating a tool in VB using Visual Studio 2015 and I'm having some issues with forcing one item on a menu strip when clicked to open the SCCM Configuration Manager.
So far I've tried:
Option 1
Dim ProcID As Integer
ProcID = Shell("control smscfgrc", AppWinStyle.NormalFocus)
Option 2
Process.Start("cmd.exe", "control smscfgrc")
Option 3
Dim p as Process = new Process()
Dim pi as ProcessStartInfo = new ProcessStartInfo()
pi.Arguments = "control smscfgrc"
pi.FileName = "cmd.exe"
p.StartInfo = pi
Option 4
Shell=("control smscfgrc", 0)
None of the above work, they just open the console but nothing else.
If I open a regular cmd window using "windows + R" and type the command "control smscfgrc" it open the SCCM Configuration Manager as it should.
I really need this to complete my tool, any help is much appreciated!
Thank you for the time you took to read this.
I'm not a guru with VS nor VB, but your commands to open cmd.exe looks incorrect. You need to add a /c. The command in the Run window ( + R) would look like this ...
cmd.exe /c control smscfgrc
Of course, control is actually control.exe, so you don't even need cmd.exe:
control.exe smscfgrc
Tested and confirmed that this opens the Configuration Manager Properties window from the Run windows on my computer.
You also may need the full path to control.exe. I would use environment variables; I think this is how it would be done in VB:
Dim control_exe As String
control_exe = Environment.GetEnvironmentVariable("SystemRoot") & "\System32\control.exe"
You will automatically get redirected to SysWOW64 if running on as a 32-bit process on a 64-bit OS.
Option 2
Process.Start(control_exe, "smscfgrc")
Option 3
Dim p as Process = new Process()
Dim pi as ProcessStartInfo = new ProcessStartInfo()
pi.Arguments = "smscfgrc"
pi.FileName = control_exe
p.StartInfo = pi
I'm trying to change the computer name of a PC with VB.net using this code:
Declare Auto Function SetComputerName Lib "kernel32" (ByVal lpComputerName As String) As Integer
computerName = "Testing"
SetComputerName(computerName.ToString)
Is this right? Because it doesn't change the computer name.
Really preciate your help.
I've gotten this to work in the past by having my vb.net code generate a bat file and then execute it. the bat script contains the wmic command for renaming the PC.
wmic computersystem where name="%computername%" call rename name="[NEW PC NAME]"
you can compile the new name right into the bat file on the fly. The vb.net code just needs to obtain the new name with an argument, or if you're using a windows form, a text box.
VB PART:
Public rename As String = "wmic computersystem where name=""%computername%"" call rename name="
...
dim source as new system.text.stringbuilder
source.AppendLine("#echo off")
source.AppendLine(rename + """" + [put your new hostname here] + """")
source.AppendLine("shutdown /r -t 10") 'PC rename only works after reboot. omit this line to reboot later
source.AppendLine("del %0") 'this will make the bat file delete itself after it runs
IO.File.WriteAllText("source.bat", source.ToString())
process.start("source.bat")
Do keep in mind this has absolutely no error checking other than what is already built into wmi. You'll need some more code if you want to do things like check for whitespaces, prohibited characters or ensure that the new hostname string is less than 15 characters which is the max set by Windows. This will also only work if the vb.net code is executed with administrator rights. You may also see the Windows CMD briefly open.
Alright guys I have a copy of minecraft wich is a java program launched by Minecraft.exe.
Inside the same folder is my program (lets call it launcher.exe) wich I am programming in VB.net and a Folder called LocalAppData.
If I place a shortcut in the same folder as Minecraft.exe, clear the "start in" field and put this in the target field:
C:\Windows\System32\cmd.exe /c start cd LocalAppData&& set APPDATA=%cd%\LocalAppData&& javaw -Xms4096M -Xmx4096M -cp LocalAppData\Minecraft.exe net.minecraft.LauncherFrame
then minecraft launches with my custom memory allocation from inside the LocalAppData folder. Two command windows appear as well. One closes when minecraft does, but the other does not and needs to be closed by the user
My Question is: How do I acheive the same result in VB.net instead of with a windows shortcut and is there a way to either stop the command windows appearing or setting them both to close automatically?
My goal is to launch minecraft from a subfolder, so local filepaths would be far preferrable to global filepaths, but figuring out the location of the application at runtime and working from a subfolder would be ok as well.
I thought I would be able to use the same code inside a Shell() command to produce the same effect, but it appears not.
Ideally I want to create a program that runs minecraft with:
Custom memory allocation
Local filepaths so that it can be run portably
The appdata folder changed to the subfolder so that it can be run portably
Those command windows either gone or minimised and then close automatically when minecraft is closed by the user.
I know this is a big ask, but I'm 6 months into a programming course and I'll admit that I'm not the best programmer out there.
Once I know how to do this I can create the rest of the program that manages multiple installations in seperate subfolders and lets you choose wich one to launch, but I just need help with the actual launching of the java application itself.
Note:
I should clarify that Minecraft.exe is not something that I have made and that I don't program java. I'm just looking for a solution in VB.Net.
Thank you for reading all this and sorry for the long post.
Edit
Thank you for the help. This is what I have so far, but it produces an error "Error: Could not create the JavaVirtualMachine. Error: A fatal exception has occurred. Program will exit"
'Declare Processes
Dim appDataStartInfo As ProcessStartInfo = New ProcessStartInfo()
Dim javaStartInfo As ProcessStartInfo = New ProcessStartInfo()
Dim appPath As String = Application.StartupPath()
'Launch appdata relocation process
appDataStartInfo.FileName = "cmd.exe"
appDataStartInfo.Arguments = "/c start cd " & appPath & "&& set APPDATA=" & appPath & "\LocalAppData"
appDataStartInfo.UseShellExecute = True
Process.Start(appDataStartInfo)
'Launch Minecraft
javaStartInfo.FileName = "javaw.exe"
javaStartInfo.Arguments = "-Xms4096M -Xmx4096M -cp " & appPath & "\LocalAppData\.minecraft\bin\Minecraft.jar net.minecraft.LauncherFrame"
javaStartInfo.UseShellExecute = True
Process.Start(javaStartInfo)
Does anyone see where I've gone wrong?
The Process class (http://msdn.microsoft.com/en-us/library/system.diagnostics.process.aspx )allows you to launch a process. You set it up with a ProcessStartInfo instance (http://msdn.microsoft.com/en-us/library/system.diagnostics.processstartinfo(v=vs.80).aspx ).
I don't have the time to give you all the details, but this pseudo-code should get you started :
Dim startInfo As ProcessStartInfo = new ProcessStartInfo()
startInfo.FileName = "javaw.exe" 'That's the name of your executable
startInfo.Arguments = "your argument line"
startInfo.UseShellExecute = true 'Needed to open a command window
Process.Start(startInfo)