怎么算子串出现的？ [英] How to count of sub-string occurrences?

问题描述

假设我有这样的字符串：

  MyString的=OU = Level3的，OU =级别2，OU = 1级，DC =域，DC = com的; 
  

那么我想知道的子串的出现多少时间OU =此字符串。随着单个字符，也许是这样的：

 诠释计数= MyString.Split（OU =）长度 -  1 ; 
  

但拆分仅适用于字符，而不是字符串。

另外如何找到位置ñ出现？例如，第二的位置OU =中的字符串？

如何解决这个问题？

解决方案

  Regex.Matches（输入，OU =）。伯爵
  

Suppose I have a string like:

MyString = "OU=Level3,OU=Level2,OU=Level1,DC=domain,DC=com";

then I want to know how many time of occurrences of sub-string "OU=" in this string. With single char, maybe there is something like:

int count = MyString.Split("OU=").Length - 1;

but Split only works for char, not string.

Also how to find the position of n occurrences? For example, the position of 2nd "OU=" in the string?

How to resolve this issue?

解决方案

Regex.Matches(input, "OU=").Count

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