c# - 寻找最长的子串正则表达式？

Question

有人知道如何使用 MatchCollection 查找由字母组成的最长子串。

public static Regex pattern2 = new Regex("[a-zA-Z]");
public static string zad3 = "ala123alama234ijeszczepsa";

Answer 1

您可以遍历所有匹配项并获得最长的匹配项:

string max = "";

foreach (Match match in Regex.Matches(zad3, "[a-zA-Z]+"))
    if (max.Length < match.Value.Length)
        max = match.Value;