Detect if Visual Studio 2012 app is running from localhost

I can run my app either from the localhost or from the server.

I need code to identify where the app is running from.
My test is:
if (context.Request.Url.ToString().StartsWith("http://localhost"))

This returns "".

Is there another way?

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DovbermanAuthor Commented:
I am using c#.

   Boolean blnLocal = true ;
What is the proper syntax?      
  ???          blnLocal = (System.Web.HttpRequest.

Big MontyWeb Ninja at largeCommented:
blnLocal = (System.Web.HttpRequest.isLocal);
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DovbermanAuthor Commented:
blnLocal = (System.Web.HttpRequest.isLocal);

Error      4      'System.Web.HttpRequest' does not contain a definition for 'isLocal'      C:\Users\David\Documents\Visual Studio 2012\Projects\StockPickerMax\StockPickerMax\Admin\MaintainDataDaily.aspx.cs      369      48      StockPickerMax
Big MontyWeb Ninja at largeCommented:
sorry, should be

blnLocal = (Request.isLocal);

example -

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