title: WIX extracting Binary table data to TempFolder
body: <p>During install I need to extract a text file from Binary data and place it in TempFolder so it can be used by a dll I don't control. It needs to be passed the file-name of the text for processing.</p>
  
  <p>I thought I could use a simple custom action to invoke xcopy to copy the data but how do I identify the contents of the binary table?</p>
  
  <p>Secondly, customaction supports various actions but I don't see anything obvious to just drop the binary item into the TempFolder.</p>
  
  <p>Any ideas?</p>