process object locking up files

 when i have the .createnowindow=True, whenever the copy command is done, it never releases the copied file. I try to delete d:\test.txt when done, and it says being used by another process.

when i put the createnowindow=False it does not do this, but i get a shell pop up window where can see copy going on.
Isn't there a property to keep the createnowindow=True, but hide the window itself?
         
  Dim cmdFile As New Process
            With cmdFile.StartInfo
                .FileName = "cmd.exe"
                .arguments ="/c copy c:\test.txt d:\test.txt"
                .CreateNoWindow = True
                .UseShellExecute = True
            End With
            cmdFile.Start()
            cmdFile.WaitForExit(-1)
            cmdFile.Dispose()
           
rknealAsked:
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Mohamed ZedanConnect With a Mentor Commented:
Sorry this is what I meant

        Dim pInfo As New ProcessStartInfo("xcopy", "c:\test.txt d:\test.txt")
        pInfo.CreateNoWindow = False
        pInfo.WindowStyle = ProcessWindowStyle.Hidden
        Process.Start(pInfo)
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Wayne Taylor (webtubbs)Commented:
If you are only copying files, it is better to use something like this....

    System.IO.File.Copy("C:\text.txt", "D:\test.txt", True)

Regards,

Wayne
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rknealAuthor Commented:
sorry, i should have said in last post, that we are really running a very detailed windows volume shadow copy, so the above filename is really a .bat file that gets run by the process command.   It is copying about 1G of data over a network from a proprietary system.   As stated above if i put the .createOnWindow=True it does not lock up the files, but i can see the window pop up.
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Mohamed ZedanCommented:
Did you try calling the batch file only without cmd.exe it should work and do what you want
also use xcopy better.

Process.Start("xcopy", "c:\test.txt d:\test.txt")
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Mohamed ZedanCommented:
And try it with .createwindow = false it should be ok ...
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rknealAuthor Commented:
we can't use xcopy, it does not allow to copy open files.
if you look at the windows volume copy service, it allows you to copy open files so this is the mechanism we use to do this.

But, your answer above is allowing me to control the window state of the command window, so it works!

thanks
Bob
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Mohamed ZedanCommented:
Glad it helped :)
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rknealAuthor Commented:
followup comment, i had to still make the .useshellexecute = true to make this not lock up the files, :)

  Dim cmdfile As New ProcessStartInfo
            With cmdfile
                .FileName = rFileStr
                '.RedirectStandardOutput = True
                .CreateNoWindow = True
                .UseShellExecute = True
                cmdfile.WindowStyle = ProcessWindowStyle.Hidden
            End With

            Process.Start(cmdfile)
            Process.Start(cmdfile).WaitForExit(1000)
            Process.Start(cmdfile).Dispose()
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rknealAuthor Commented:
thanks again!, at least not one can see the window popping up with your solution to control the processWindowStyle property.
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Mohamed ZedanCommented:
These lines cause you to call the copy three times

Process.Start(cmdfile)
Process.Start(cmdfile).WaitForExit(1000)
Process.Start(cmdfile).Dispose()

instead do this....

dim p as process = new process
p.start(cmdFile)
p.waitforexit(1000)
p.dispose
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Mohamed ZedanCommented:
you're welcome again .... :) but see the comment above ^^^
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rknealAuthor Commented:
i see! thanks
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rknealAuthor Commented:
just a last comment, i downloaded a free program called unlocker.  This allowed me to see who was locking the files. Ends up being the vb.net app was not locking them, but McAfee antivirus!!  This unlocker program allows you to see that, then tell it to unlock it. Pretty cool for free

Thanks for help.
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