Question

我想从列表中删除一个单词。问题是要删除的单词是用户输入，它应该不区分大小写。

我知道如何进行不区分大小写的比较。但这似乎不起作用。

List<string> Words = new List<string>();
Words.Add("Word");
Words.Remove("word", StringComparer.OrdinalIgnoreCase);

有办法做到这一点吗？

提前致谢

Answer 1

删除所有

Words.RemoveAll(n => n.Equals("word", StringComparison.OrdinalIgnoreCase));

删除第一次出现，例如Remove：

Words.RemoveAt(Words.FindIndex(n => n.Equals("word", StringComparison.OrdinalIgnoreCase)));

Answer 2

您可以尝试使用RemoveAll()方法：

List<string> Words = new List<string>();
Words.Add("Word");
Words.RemoveAll(o => o.Equals("word", StringComparison.OrdinalIgnoreCase));

Answer 3

这是一个扩展函数，它将执行相同的操作：

        public static void Remove(this List<string> words, string value, StringComparison compareType, bool removeAll = true)
    {
        if (removeAll)
            words.RemoveAll(x => x.Equals(value, compareType));
        else
            words.RemoveAt(words.FindIndex(x => x.Equals(value, compareType)));
    }

作为额外的好处，这将删除以指定字符串开头的值：

        public static void RemoveStartsWith(this List<string> words, string value, StringComparison compareType, bool removeAll = true)
    {
        if (removeAll)
            words.RemoveAll(x => x.StartsWith(value, compareType));
        else
            words.RemoveAt(words.FindIndex(x => x.StartsWith(value, compareType)));
    }

用法示例：

wordList.Remove("text to remove", StringComparison.OrdinalIgnoreCase);
wordList.RemoveStartsWith("text to remove", StringComparison.OrdinalIgnoreCase);

C＃List删除Case-Insensitive

3 个答案: