获取下一个相同字符的索引

本文介绍了获取下一个相同字符的索引的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个这样的文件:某事，某事，某事，某事，某事"

I have a file like this: "Something, something, something, something, something"

我想通过以下方式获取第三个,"的索引:

And I want to get the index of third "," with:

StreamReader sr=new StreamReader("File.txt"); string s=sr.Readline(); string c=s.Substring(0, s.IndexOf(',')));

推荐答案

抱歉之前的回答，我为你创建了一个函数，试试这个，你需要传递你的字符串、查找字符和出现次数作为参数.这里是一个演示.

Sorry for previous answer, I created a function for you, try this, You need to pass your string, character to find and occurance number as parameters. Here is a demo.

public static int getSpecifiedIndexOf(string str,char ch,int index) { int i = 0,o=1; while ((i = str.IndexOf(ch, i)) != -1) { if(o==index)return i; o++; i++; } return 0; }