URL encoding and decoding in ASP. NET

Today, the project needs to post data to the ASP Client URL, but the URL Chinese is useless. One afternoon, ASP and Asp.net URL encoding is different:

Let's take a look at the following two URLs. Are they passing the same parameters?
AAA. aspx? Tag =. Net % BC % Ca % F5
AAA. aspx? Tag =. Net % E6 % 8A % 80% E6 % 9C % af

It seems to be different, in fact they are on the ". NET Technology" urlencode, but one is gb2312 encoding, one is the Utf-8 code.
As follows:CodeYou can get the above encoding effect:

String tmp1 = system. Web. httputility. urlencode (". NET technology", system. Text. encoding. getencoding ("gb2312 "));
String tmp2 = system. Web. httputility. urlencode (". NET technology", system. Text. encoding. utf8 );

Our actual web page may beProgramCall.
For example, an ASP page on a simplified Chinese operating system must pass a Chinese parameter to an Asp.net page.
By default, on the simplified Chinese operating system, ASP server. urlencode will encode Chinese in gb2312 encoding,
However, by default, the Asp.net page uses the UTF-8 encoding.
In this case, when you use request. querystring ["tag"] to accept the value, you will not be able to accept the Chinese information. What you can see in One-Step debugging is garbled characters.
At this time, although request. querystring ["tag"] is used to accept garbled characters, the URL at this time is not garbled.

The solution is to analyze the parameters in the URL, and then the parameter value according to gb2312 Encoding Anti-decryption, rather than using. Net default Utf-8 Encoding Anti-decryption.

Also:. Net hasServer. urlencode ()AndSystem. Web. httputility. urlencode () can all be encoded.

The difference is that httputility. urlencode () is UTF-8 encoded by default, while server. urlencode () is UTF-8 encoded by default.

C # Use System. Web. httputility. urlencode instead of server. urlencode to pass Chinese parameters in Asp.net URL.!!!

The default aspx is UTF-8 encoded. In my program, gb2312 must be used as the default encoding.
(<Globalization requestencoding = "gb2312" responseencoding = "gb2312"/>)