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I have a situation where the user is able to enter any characters they want in a URL query string.
Example:
http://localhost/default.aspx?ID=XXXX
http://localhost/default.aspx?ID=&XXXX
http://localhost/default.aspx?ID=#XXXX
The web page must accept the ID parameter as it is no matter what the characters are. However certain special characters such as ampersand(&) and pound(#) creates problems. How can I accept them as is?
871
In JavaScript you can use the encodeURI() function. ASP has the Server. URLEncode() function. You can use HttpServerUtility.
Since URLs often contain characters outside the ASCII set, the URL has to be converted into a valid ASCII format. URL encoding replaces unsafe ASCII characters with a "%" followed by two hexadecimal digits. URLs cannot contain spaces. URL encoding normally replaces a space with a plus (+) sign or with %20.
The query component is a string of information to be interpreted by the resource. Within a query component, the characters ";", "/", "?", ":", "@", "&", "=", "+", ",", and "$" are reserved.
This:
encodeURIComponent(uri)
Where uri is the component after the ?ID=
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