what is the c# equivalent to javascript's unescape()? - Stack Overflow

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I am trying to analyse some JavaScript, and one line is

var x = unescape("%u4141%u4141 ......"); 

with lots of characters in form %uxxxx.

I want to rewrite the JavaScript in c# but can't figure out the proper function to decode a string of characters like this. I've tried

HttpUtility.HTMLDecode("%u4141%u4141");

but this did not change these characters at all.

How can I accomplish this in c#?

I am trying to analyse some JavaScript, and one line is

var x = unescape("%u4141%u4141 ......"); 

with lots of characters in form %uxxxx.

I want to rewrite the JavaScript in c# but can't figure out the proper function to decode a string of characters like this. I've tried

HttpUtility.HTMLDecode("%u4141%u4141");

but this did not change these characters at all.

How can I accomplish this in c#?

• javascript
• c#
• .net

Share Improve this question Follow edited May 8, 2015 at 6:03 gotqn 43.6k4646 gold badges165165 silver badges254254 bronze badges asked Jul 26, 2011 at 17:09 vivek a.vivek a. 9911 gold badge11 silver badge33 bronze badges 1

• 1 You are mixing up two different escaping/unescaping methods: one is for entities inside a HTML file, the other is for URLs, i.e. addresses. – Philip Daubmeier Commented Jun 30, 2012 at 14:55

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6 Answers 6

Sorted by: Reset to default 14

You can use UrlDecode:

string decoded = HttpUtility.UrlDecode("%u4141%u4141");

decoded would then contain "䅁䅁".

As other have pointed out, changing the % to \ would work, but UrlDecode is the preferred method, since that ensures that other escaped symbols are translated correctly as well.

You need HttpUtility.UrlDecode. You shouldn't really be using escape/unescape in most cases nowadays, you should be using things like encodeURI/decodeURI/encodeURIComponent.

When are you supposed to use escape instead of encodeURI / encodeURIComponent?

This question covers the issue of why escape/unescape are a bad idea.

You can call bellow method to achieve the same effect as Javascript escape/unescape method

Microsoft.JScript.GlobalObject.unescape();

Microsoft.JScript.GlobalObject.escape();

Change the % signs to backslashes and you have a C# string literal. C# treats \uxxxx as an escape sequence, with xxxx being 4 digits.

In basic string usage you can initiate string variable in Unicode: var someLine="\u4141"; If it is possible - replace all "%u" with "\u".

edit the web.config the following parameter:

< globalization requestEncoding="iso-8859-15" responseEncoding="utf-8" >responseHeaderEncoding="utf-8" in < system.web >

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