代码语言：javascript复制
private void button1_Click(object sender, EventArgs e)
{
MatchCollection matches =//使用正则表达式查找重复出现单词的集合
Regex.Matches(label1.Text,
@"b(?<word>w )s (k<word>)b", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (matches.Count != 0)//如果集合中有内容
{
foreach (Match//遍历集合
match in matches)
{
string word = match.Groups["word"].Value;//获取重复出现的单词
MessageBox.Show(word.ToString(), "英文单词");//弹出消息对话框
}
}
else { MessageBox.Show("没有重复的单词"); }//弹出消息对话框
}
private void Form1_Load(object sender, EventArgs e)
{
label1.Text =//创建字符串对象
"The the quick brown fox fox jumped over the lazy dog dog.";
}
