title: Visual Studio pre-build event check to see if a directory (and file) exists and delete it if it does
body: <p>Every time I do a build I would like for this Pre-build event to occur:</p>
  
  <pre><code>del  $(ProjectDir)\obj\Debug\Package\PackageTmp\web.config
  </code></pre>
  
  <p>This works fine if the directory is there.  But if the directory is not there then it will cause the build to fail.  I tried doing something like this to check if the directory was there:</p>
  
  <pre><code>if Exists('$(ProjectDir)\obj\Debug\Package\PackageTmp\')   
  del  $(ProjectDir)\obj\Debug\Package\PackageTmp\web.config
  </code></pre>
  
  <p>But I believe my syntax is wrong because I get a exit code of 255.  What would be the proper way to get this to work?</p>
  
  <p>Thanks!</p>