Plus sign in query string

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I have a webapp created using C# and asp.net. I placed a parameter value in the querystring with a plus(+) sign. But the plus sign disappear.

How can I include the plus sign(+) in the query string without disappearing?

Please advise.

Thanks.

Edit: added code with UrlEncode

string str = Server.UrlEncode(Requery.QueryString["new"]);

+ sign has a semantic meaning in the query string. It is used to represent a space. Another character that has semantic importance in the query string is & which is used to separate the various var=value pairs in the query string.

Most server side scripts would decode the query parameters before using them, so that a + gets properly converted to a space. Now, if you want a literal + to be present in the query string, you need to specify %2B instead.

+ sign in the query string is URL-decoded to a space. %2B in the query string is URL-decoded to a + sign.

See the difference between

http://www.google.com/search?q=foo+bar

and

http://www.google.com/search?q=foo%2Bbar

In the above examples, Google's server script is URL-decoding the query parameters and then using them to do the search.

URL-encoding is nothing but % sign followed by the hex-code of the special character. For example, we know that the hex code of A is 0x41 (decimal: 65). Try this:

http://www.google.com/search?q=%41

Hope this makes URL-encoding clear.

So, if you want the + sign to be preserved when a JavaScript is fetching a URL with + signs in its query parameters and a server side script would process the query parameters after URL-decoding it, you should URL-encode the query parameters in the URL before using issuing the HTTP get request so that all + signs are converted to %2B's when the request reaches the server side script. Now when the server side script URL-decodes the query string, all %2B's gets converted back to + signs which is what you want.

See Encode URL in JavaScript? to learn how to URL-encode the parameters using JavaScript. Short answer from the discussion there:

var encodedURL = "http://example.com/foo.php?var=" + encodeURIComponent(param);

Plus sign in query string, + sign has a semantic meaning in the query string. It is used to represent a space. Another character that has semantic importance in the query string is & which is used to separate the various var=value pairs in the query string. + sign has a semantic meaning in the query string. It is used to represent a space. Another character that has semantic importance in the query string is & which is used to separate the various var=value pairs in the query string.

You should URLEncode your query string values to make sure any special characters are not lost.

How to pass + in the url query string parameter?, UrlEncode) from one page to another via the url QueryString. .com/articles/ urlencode-plus-sign-in-querystring-urldecode-plus-symbol. @Rachel G., simply replace all + signs with %2B in the URL string. Once your URL is composed and you have it as a string, you can just use String 's replace () method. Added example. – rid Oct 20 '11 at 21:38 Add the code (escape (descriptionSelectBox.options [i].value).replace ("+", "%2B")) to your answer and I'll mark it as correct.

Look at HTML URL Encoding Reference

You need to Encode the + sign - It's value should be %2B

GET request not encoding "+" (plus sign) in query string � Issue #181 , GET request not encoding "+" (plus sign) in query string #181. Closed. jordansnyder opened this issue on Oct 16, 2014 � 2 comments. Closed� After searching for more combinations of IIS and plus, it appears that IIS7 [.5] is set up to reject URLs with a plus sign by default out of some fear of the use of that character; that symbol is still allowed in the querystring, though.

I alter my previous statement so no one gets confused!

Create your url using the Server.UrlEncode. e.g.

string myUrl = "http://myurl?param1="  + Server.UrlEncode("my+param+1");

URLEncode plus sign in query parameters � Issue #4444 , So I get an Exception while deserializing this string. Is it possible, to differentiate between a desired + sign and an encoded whitespace? Or do I� Hi, I have a problem with passing a plus sign (+) in a URL as an argument, it comes as a space instead of the plus sign. do anyone know how can i solve this issue.

Other simple way is, Request.Url.ToString().Substring(Request.Url.ToString().IndexOf("=") + 1) assuming that my URL is, http://localhost/MyApp/Activate.aspx?ActivationCode=cHbtqH9P2dDZkx/mYUgFFo7nrNqSFgqdPisAzzu5/nwlEYDOHI+CQw==

Query string, On the World Wide Web, a query string is a part of a uniform resource locator ( URL) that For example, this is the source of the special handling of plus sign, ' + ' within browser URL percent encoding (which today, with the deprecation of� string p1 = Server.HtmlDecode(Request.QueryString["P1"]); found from net, url code for plus symbol is %2b, if you decode it you will get "+" sumbol. but if you decode "+" symbol you will get space as a result. this is what happening in your case. Hi, Tried: 1) Page 1: string encoded = Server.UrlEncode (msg);

How to Pass a Plus Sign to a URL?, By design (and originally) in url space should be encoded to + and not to %20 So the solution is - encode the url by yourself, just as you have� 1 . using "Like" operator with plus sign in query : string command = "Select FirstName from UsersTable where FirstName Like '%'+ @FirstName + '%' " ; SqlCommand cmd = new SqlCommand (command);

"+" sign getting replaced with space in querystring, in a string are either encoded with %20 or replaced with the plus sign ( + ) is used within URLs to indicate the beginning of the query string;� If he actually has a plus sign as part of a file URL then it would have to be encoded as %2b (and hence should have worked anyway) since + means space in a query string. – Jamie Treworgy Jan 5 '11 at 13:27

URL Encoding | Maps URLs, As a result when I pass the query string with the + sign it gets Simply put, when passing URL parameters with a plus sign, the plus sign is� A string literal is a series of characters interpreted as one block and is used as one. Literal strings types are used everywhere in SQL. A column of a table with STRING or VARCHAR data type represents string literals when used in the select statement. Examples of literal strings are the following:

Comments
  • actually the value depends from the user input.
  • FYI beware the UrlBuilder, it seems a bit useless which is how i stumbled on your question. See stackoverflow.com/questions/24576239/…
  • *UriBuilder not Url
  • How can I replace the + sign to %2B in javascript. Because I'm creating my querystring in javascript.
  • Like this, string str = Server.UrlEncode(Requery.QueryString["new"]); ? THanks
  • Not quite, you need to encode them before putting them in to the query string rather than when you take them back out. How are you setting the values in the query string?
  • in Javascript, like $("#btn").click(function(){ var param="c++"; ... });
  • + sign is allowed in query parameter value, where it shouldn't be encoded, because it already encodes 'space'
  • If it's for a URL, you should URL Encode, Not Html Encode. They are different.
  • I added my querystring in the javascript, is there any possible way to encode it in the javascript?
  • What about the other reserved characters? This solution will only fix the +, and not the ? and & etc