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Asked: 2026-05-14T04:11:51+00:00

The regular .Net framework contains HttpUtility.UrlEncode in the System.Web Assembly and in Silverlight it

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The regular .Net framework contains HttpUtility.UrlEncode in the System.Web Assembly and in Silverlight it appears it was moved to System.Windows.Browser. But in Windows Phone 7 (which I thought was the same as Silverlight) I can’t seem to find a proper way to UrlEncode anything. Neither of the previously mentioned assemblies are available in the Windows Phone 7 environment.

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  1. Editorial Team

    Silverlight has the Uri.EscapeUriString and Uri.EscapeDataString which can be used to URL-encode portions of a URI such as query strings and path components and such.

    Even in the desktop framework, you should never take a dependency on System.Web.dll just for HttpUtility, although many developers still do it. This is bad for 3 reasons.

    • The assembly is very large and loading it can add significant delays to your application.
    • You will be bloating the working set of your process for about 20 lines of code.
    • It makes your application require the full framework since System.Web is not in the client profile.

    In addition to the Uri escaping methods described above, if you need HtmlEncode, I would just rip code off that someone else wrote and drop it in your application.

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