Support Forums
[TuToRiAl] How to execute simple commands in Visual Basic - Printable Version

+- Support Forums (https://www.supportforums.net)
+-- Forum: Categories (https://www.supportforums.net/forumdisplay.php?fid=87)
+--- Forum: Coding Support Forums (https://www.supportforums.net/forumdisplay.php?fid=18)
+---- Forum: Visual Basic and the .NET Framework (https://www.supportforums.net/forumdisplay.php?fid=19)
+---- Thread: [TuToRiAl] How to execute simple commands in Visual Basic (/showthread.php?tid=12465)

[TuToRiAl] How to execute simple commands in Visual Basic - Resistance - 10-04-2010

Hello everyone. Today i'm going to be showing you how to use very basic and beginner codes in VB. Everyone should know this, especially if you had something to start off with. (This was the first code I ever started off with to get me at this point).

Now, how to execute a command.

These are ways to suspend the state of your computer.

Usage: shutdown [/i | /l | /s | /r | /g | /a | /p | /h | /e] [/f]
[/m \\computer][/t xxx][/d [p|u:]xx:yy [/c "comment"]]

No args Display help. This is the same as typing /?.
/? Display help. This is the same as not typing any options.
/i Display the graphical user interface (GUI).
This must be the first option.
/l Log off. This cannot be used with /m or /d options.
/s Shutdown the computer.
/r Shutdown and restart the computer.
/g Shutdown and restart the computer. After the system is
rebooted, restart any registered applications.
/a Abort a system shutdown.
This can only be used during the time-out period.
/p Turn off the local computer with no time-out or warning.
Can be used with /d and /f options.
/h Hibernate the local computer.
Can be used with the /f option.
/e Document the reason for an unexpected shutdown of a computer.
/m \\computer Specify the target computer.
/t xxx Set the time-out period before shutdown to xxx seconds.
The valid range is 0-315360000 (10 years), with a default of 30.
If the timeout period is greater than 0, the /f parameter is
implied.
/c "comment" Comment on the reason for the restart or shutdown.
Maximum of 512 characters allowed.
/f Force running applications to close without forewarning users.
The /f parameter is implied when a value greater than 0 is
specified for the /t parameter.
/d [p|u:]xx:yy Provide the reason for the restart or shutdown.
p indicates that the restart or shutdown is planned.
u indicates that the reason is user defined.
If neither p nor u is specified the restart or shutdown is
unplanned.
xx is the major reason number (positive integer less than 256).
yy is the minor reason number (positive integer less than 65536).


Initiating a Shutdown of your computer on the click of a button.

Code:
Shell("shutdown -s -t 1")

The 1 represents how many seconds there will be a delay for till shutdown. Very simple. (This is actually BATCH Commands coding and i'm using it in VB.)

Now this same code can open little applications such as Calculator.

Code:
Shell("calc.exe")

You must type .exe to be sure, its not assuming what the heck to run. Its programming, not a guessing game lol.

---

How to start a process such as a website, folder path or even an executable (Shell it preferred for executables).

Code:
Process.Start("C:\Users\YourUserName")

Code:
Process.Start("C:\Windows\System32")

Self Explanatory.

Execute Website Address:

Code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Process.Start("http://www.supportforums.com")
    End Sub
End Class

Run Executables, the "Fancy" way.

Code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        System.Diagnostics.Process.Start("C:\Windows\System32\notepad.exe")
    End Sub
End Class


Thats it for this tutorial. I believe we are done. Enjoy starting and executing tasks.

RE: [TuToRiAl] How to execute simple commands in Visual Basic - thanasis2028 - 10-06-2010

(10-04-2010, 06:08 PM)L3g1tWa5te Wrote: (Shell it preferred for executables).
Why? What's the differnce between Shell and Process.Start? (Personally I always use Process.Start)

RE: [TuToRiAl] How to execute simple commands in Visual Basic - CATMAN - 10-06-2010

Thanks.
I can make a CMD commands generator now <3