C # Customizing Processing class instances for URL addresses

The examples in this article describe C # Custom processing classes for URL addresses. Share to everyone for your reference. The specific analysis is as follows:

This C # class is specifically for the URL address processing of the class, you can Base64 the URL addresses to encrypt and decrypt, you can add parameters to the URL by function, you can update the URL of the parameters of the value of the URL address, the domain name, sub-domain name, analysis URL of all parameters and parameter values, The function is very comprehensive, also can expand oneself, very has the practical value

Using system;using system.text.regularexpressions;using system.web;using system.collections.specialized;namespace dotnet.utilities{///<summary>///////</summary> public class Urloper {static SYSTEM.TEXT.E    ncoding encoding = System.Text.Encoding.UTF8; The 64-bit encoding of the #region URL public static string Base64encrypt (String sourthurl) {string eurl = Httputility.urlencode (so      Urthurl); Eurl = convert.tobase64string (encoding.      GetBytes (Eurl));    return eurl; The 64-bit decoding public static string Base64decrypt (String estr) {if (!) #endregion #region URL.      IsBase64 (ESTR)) {return estr;      } byte[] buffer = convert.frombase64string (ESTR); String sourthurl = Encoding.      GetString (buffer);      Sourthurl = Httputility.urldecode (Sourthurl);    return sourthurl;  }//<summary>//Is BASE64 string///</summary>//<param name= "Estr" ></param>/// <returns></returns> Public Static bool IsBase64 (string estr) {if ((estr.length% 4)! = 0) {return false; } if (!      Regex.IsMatch (Estr, "^[a-z0-9/+=]*$", Regexoptions.ignorecase)) {return false;    } return true;  } #endregion///<summary>///Add URL parameter////</summary> public static string AddParam (string URL,      String paramname, String value) {URI uri = new Uri (URL); if (string. IsNullOrEmpty (URI.        Query) {String eval = HttpContext.Current.Server.UrlEncode (value);      Return String.Concat (URL, "?" + paramname + "=" + eval);        } else {String eval = HttpContext.Current.Server.UrlEncode (value);      Return String.Concat (URL, "&" + paramname + "=" + eval); }}///<summary>//Update URL parameter////</summary> public static string Updateparam (string URL, Strin      G paramname, String value) {string KeyWord = paramname+ "="; int index = URL. IndexOf (KeyWord) +keywOrd.      Length; int index1 = URL.      IndexOf ("&", index); if (index1 = =-1) {url = URL. Remove (index, URL.        Length-index); url = string.        Concat (URL, value);      return URL; } url = URL.      Remove (Index,index1-index); url = URL.      Insert (index, value);    return URL;      #region Parse URL that belongs to the domain public static void GetDomain (String fromurl, out string domain, out string subdomain) {      Domain = "";      subdomain = "";          try {if (Fromurl.indexof ("Business Card") >-1) {subdomain = Fromurl;          Domain = "business card";        Return        } UriBuilder builder = new UriBuilder (Fromurl); Fromurl = Builder.        ToString ();        Uri u = new uri (Fromurl); if (u.iswellformedoriginalstring ()) {if (u.isfile) {subdomain = Domain = "Client local file path"          ;            } else {String authority = u.authority;      string[] ss = U.authority.split ('. ');      if (ss.            Length = = 2) {authority = "www." + authority;            } int index = Authority.indexof ('. ', 0); Domain = authority.substring (index + 1, authority.length-index-1).            Replace ("comhttp", "com");            subdomain = Authority.replace ("comhttp", "com"); if (ss.              Length < 2) {domain = "unknown path";            subdomain = "Unknown path";          }}}} else {if (u.isfile) {subdomain = Domain = "Client local file path";          } else {subdomain = Domain = "Unknown path";      }}} catch {subdomain = Domain = "Unknown path";    }}///<summary> parse the parameter information in the URL string. </summary>//<param name= "url" > Input url</param>//<param name= "baseUrl" > Output URL Base part & lt;/param>//<param name= "NVC" > Output analysis (parameter name, parameter value) collection </param> public static Void parseurl (string url, out string baseUrl, out NameValueCollection NVC) {if (url = = null) throw new Argume      Ntnullexception ("url");      NVC = new NameValueCollection ();      BASEURL = "";      if (url = = "") return; int questionmarkindex = URL.      IndexOf ('? ');        if (Questionmarkindex = =-1) {baseUrl = URL;      Return } baseUrl = URL.      Substring (0, Questionmarkindex); if (questionmarkindex = = URL.      LENGTH-1) return; string ps = URL.      Substring (Questionmarkindex + 1); Start parsing parameters to regex re = new regex (@ "(^|&)?" (      \w+) = ([^&]+) (&|$)? ", regexoptions.compiled); MatchCollection mc = Re.      Matches (PS); foreach (Match m in MC) {NVC. ADD (M.result ("$").      ToLower (), M.result ("$")); }} #endregion}}

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C # Customizing Processing class instances for URL addresses

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C # Customizing Processing class instances for URL addresses