title: How to replace string.empty to "0"
body: <p>Just like the title says.</p>
  
  <p>I've tried doing <code>str.Replace("","0");</code> but it gave me error because <code>oldValue</code> has zero length.</p>
  
  <p>Is it possible to replace <code>string.Empty</code> into something?</p>
  
  <p>Edit:</p>
  
  <p>I am maintaining a program and I encountered that the program was calling a method that'll return a string then be converted to Int32.</p>
  
  <p>int x = Convert.toInt32(Method1());</p>
  
  <pre><code>public string Method1()
  {
        string retString = string.Empty;
        //Do Something
        return retString
  }
  </code></pre>