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[英]How to perform multiple Regex replacements in sequence from a list of unique items cleanly in C#
[英]Multiple Regex Replacements in C#
我正在嘗試為文章創建一個基於正則表達式的替代品,以將帖子中的嵌入引用(其中很多)自動轉換為適當的鏈接和標題格式。
例如,鑒於此:
I have already blogged about this topic ((MY TOPIC ID: "2324" "a number of times")) before. And I have also covered ((MY TOPIC ID: "777" "similar topics")) in the past.
...我想得到這個:
I have already blogged about this topic <a href='/post/2324'>a number of times</a> before. And I have also covered <a href='/post/777'>similar topics</a> in the past.
我目前有這個:
/* Does not work */
public static string ReplaceArticleTextWithProductLinks(string input)
{
string pattern = "\\(\\(MY TOPIC ID: \\\".*?\\\" \\\".*?\\\"\\)\\)";
string replacement = "<a href='/post/$1'>$2</a>";
return Regex.Replace(input, pattern, replacement);
}
但是它似乎返回的行包含<a href='/post/'></a>
而不附加匹配項,而不是$ 1和$ 2。
問題 :將上面的字符串#1轉換為上面的字符串2的最簡單方法是什么?
您沒有捕獲要提取的表達式的各個部分。 嘗試這樣的事情:
public static string ReplaceArticleTextWithProductLinks(string input)
{
string pattern = @"\(\(MY TOPIC ID: ""(.*?)"" ""(.*?)""\)\)";
string replacement = "<a href='/post/$1'>$2</a>";
return Regex.Replace(input, pattern, replacement);
}
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