title: how to fix invalid-zero length error?
body: <p>I create a backup from my database by this code:   </p>
  
  <pre><code>    "USE DBFP; " +
      "BACKUP DATABASE DBFP " +
      "TO DISK = '" + strFileName + "'";
  </code></pre>
  
  <p>but when i want to restore this backup by this code:</p>
  
  <pre><code> "RESTORE DATABASE DBFP FROM DISK = '" + strFileName+"'"
  </code></pre>
  
  <p>this error will apear:</p>
  
  <pre><code>Invalid zero-length device name!
  </code></pre>