title: how to achieve conditional app_offline.htm in asp .net IIS 7
body: <p>I am going to upload new look of my site.my site is in ASP .NET , C#.</p>
  
  <p>What i want that during my testing time the site should in Maintenance mode but i should be able to access the site.</p>
  
  <p>So my question is can i have conditional app_offline.htm , so my site will be accessible from my IP and others will see app_offline page.</p>
  
  <p><strong>Please note</strong> I can change my IIS setting if required.</p>