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Asked: 2026-05-11T03:47:20+00:00

I have a URL which requires some parameters. The values of those parameters can

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I have a URL which requires some parameters. The values of those parameters can be accented characters, so I absolutely need to UrlEncode them. Strangely, I see a difference between the behavior or Javascript and .NET.

Let’s pretend I try to UrlEncode the word ‘éléphant’. In JavaScript (according to this WebSite: http://www.albionresearch.com/misc/urlencode.php), I get the following: %E9l%E9phant. This appears correct to me. However, in .NET with this call (System.Web.HttpUtility.UrlEncode(‘éléphant’)) I get ‘%c3%a9l%c3%a9phant’. What is wrong? What am I missing? What should I do if I want to get %E9l%E9phant in .NET?

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  1. System.Web.HttpUtility.UrlEncode will use UTF8 (i think..) as its default encoder, you can change this by specifying one..

    System.Web.HttpUtility.UrlEncode('éléphant', Encoding.Default); // %e9l%e9phant

    Though it may be preferable to specify an actual codepage or what not, instead of relying on the OS default.

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