如何創建這個表達式這個條件

Question

我想通過正則表達式來做到這一點： 樣本： 父親去看望他的祖父和他的父親今天。

如何通過正則表達式選擇粗體兩個父親？非常感謝。

Answer 1

我不知道爲什麼你需要爲這個正則表達式，因爲你可以「選擇」你想要的字符串簡單地做：

String myStr = "father"; 

另外，如果您需要更換的子字符串中，你可以做到以下幾點：

String myStr = "father goes visit his grandfather and and his father today." 
myStr = myStr.Replace(" father ", " someOtherString "); 

但是，如果你真的想使用正則表達式，你可以通過執行獲得MatchCollection：

String myStr = "father goes visit his grandfather and and his father today." 
Regex.Mathces(myStr, "\bfather\b"); 

這不是一個非常有趣的正則表達式，因爲它只是一個明確的字符串文字。

Answer 2

試試這個

var matchs=Regex.matches("father goes visit his grandfather and and his father today.",@"\bfather\b"); 

Answer 3

var matchCollection = Regex.Matches("father goes visit his grandfather and and his father today.", "\bfather\b"); 

foreach (Match m in matchCollection) 
{ 
    // Process your code for each match 
}