java - Equivalent of matcher.start and matcher.end in c# -

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i new c# , trying convert below code c# can not find api in c# so.

  1. please explain equivalent of matcher.start() , matcher.end().

  2. what equivalent of matcher.group() in c#.

    private string getfinalvariant(string strinputword) {  pattern pat = pattern.compile("[aeiouhy]+"); matcher mat = pat.matcher(strinputword); int lenghtofinputword = strinputword.length(); while (mat.find()) {     if (mat.start() == 0) {          int index = '1';         map<string, string> temp = rulelist[index];         if (temp.containskey(mat.group())) {             strinputword = strinputword.replacefirst(mat.group(), temp.get(mat.group()));         }      } else if (mat.end()== lenghtofinputword) {          int index = '3';         int lastindex = strinputword.lastindexof(mat.group());         map<string, string> temp = rulelist[index];         if (temp.containskey(mat.group())) {             string tail = strinputword.substring(lastindex).replacefirst(mat.group(), temp.get(mat.group()));             strinputword = strinputword.substring(0, lastindex) + tail;         }      } else {          int index = '2';         map<string, string> temp = rulelist[index];         string str = mat.group();         // system.out.println(str);         //  system.out.println(mat.start());         if (temp.containskey(mat.group())) {             if (strinputword.length() > 3) {                 int index1 = strinputword.indexof(mat.group(), 1);                 if (index1 != 0 && index1 != strinputword.length() - 1) {                     string matched = strinputword.substring(index1, strinputword.length() - 1).replacefirst(mat.group(), temp.get(mat.group()));                     strinputword = strinputword.substring(0, index1) + matched + strinputword.charat(strinputword.length() - 1);                 }              } else if (strinputword.length() == 3) {                 strinputword = strinputword.charat(0) + strinputword.substring(1, 2).replacefirst(mat.group(), temp.get(mat.group())) + strinputword.charat(strinputword.length() - 1);             }          }      }  } return strinputword; }

you can use 

var matches = regex.matches(yourstring);

this return matches. each match object of type match, has index property can use work out first , last match.

for group() can use same collection iterate through different matches.


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