<div>
Thanks, funwithdotnet.<br />
<br />
The user of my VB.NET app clicks a button which launches a batch file that creates the potentially troublesome file.<br />
If the batch file crashes, the troublesome file is still locked by a process (the batch file?). <br />
<br />
When the user of my VB.NET app clicks the button which launches a batch file again, he/she gets the error: locked/in use by another process.<br />
<br />
So I cannot simply use the Try code with File.Open( ...) etc.
</div>


<div>
I will have the Process Id of the crashed batch file.<br />
So if I Kill it, will it unlock the troublesome file?
</div>


<div>
You read my mind. <br />
<br />
Not sure if that would work for your particular circumstance, but I'd definitely try it.<br />
<br />
Good luck!
</div>


<div>
I did a little bit of debugging and my scenario is a bit more complicated.<br />
<br />
As far as the VB.NET application is concerned the batch file does not crash, i.e. it terminates without error.<br />
<br />
But logging of user error reports show that in some circumstances the batch file leaves behind a locked file.<br />
<br />
So my problem is: &nbsp;how can I use VB.NET to delete that file?
</div>


<div>
What does your Batch file do?
</div>


<div>
Hi Scott:<br />
<br />
I used the term &quot;batch file&quot; loosely, my VB.NET app is launching a Command Shell CMD.EXE as follows:<br />
<br />
excerpt of my VB.NET code:<br />
<br />

<pre><code class="code-10 nolinks" id="code-20-41822667-1"><span>       Dim objProcess As New Process</span>
<span>        Dim startInfo As New ProcessStartInfo(&quot;CMD.EXE&quot;)</span>
<span>        Dim boolUserHasInteruptedByESCKeyOnce As Boolean</span>
<span>        Dim objErrorMessage As clsErrorMessage</span>
<span></span>
<span></span>
<span>        startInfo.WindowStyle = ProcessWindowStyle.Minimized</span>
<span>        startInfo.WindowStyle = ProcessWindowStyle.Hidden</span>
<span>        startInfo.CreateNoWindow = True</span>
<span>        startInfo.UseShellExecute = False</span>
<span>        startInfo.Arguments = Arguments</span>
<span>        objProcess = Process.Start(startInfo)</span>
</code></pre>
<br />
<br />
<br />
Arguments will be something like:<br />
<br />
/c &quot;&quot;D:\fortranpath\fortranap<wbr />p.EXE&quot; &quot;jobname&quot; &quot;D:\fortranpath&quot; &quot;D:\datapath&quot; 1&gt;&quot;D:\D:\datapath\maybeloc<wbr />ked.sto&quot; 2&gt;&amp;1&quot;<br />
<br />
maybelocked.sto is the file that can get locked.
</div>


<div>
Hi Scott &amp;&nbsp;funwithdotnet,<br />
<br />
Thanks for your help.<br />
<br />
I'm going to change my VB.NET code so that if the file is locked, I define a new one.
</div>


<div>
<div class="content wysiwyg-content">
Hi Experts,<br />
<br />
How can I detect if a file is being used by another process and if so, delete/unlock it?<br />
<br />
Regards,<br />
Leigh
</div>
</div>


Hi Experts,

How can I detect if a file is being used by another process and if so, delete/unlock it?

Regards,
Leigh

VB.NET - how to detect if a file is being used by another process

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Visual Basic.NET

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.NET Programming

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