--》匹配並替換(通過正則把"08 16 2009 12:00AM”替換成"2009-16-08")
string pattern1 = @"(\d{1,3})\s*(\d{1,3})\s*(\d{1,5})\s*(12:00AM)";
string values = "08 16 2009 12:00AM";
string result = Regex.Replace(values, pattern1,"$3-$1-$2");
Response.Write(result);
//輸出(2009-16-08)
--》清除一段格式良好內容裏面的的html標籤
string pattern2 = @"<.+?>| |(\\r\\n)|\\s";
values = "<img src='1.jpg'/> 第一句話<a href='a.html' title='a.html'>第二句話</a>\r\n<p>第三句話</p>";// \r\n會引起換行
result = Regex.Replace(values, pattern2, "");
//輸出(第一句話第二句話第三句話)
--》匹配一段字符串裏面的制定的數字
string pattern2 = @"Minimum = (\d+)ms[\s\S]*";
string values2 = "Minimum = 12ms, Maximum = 6ms, Average = 6ms\r\r\n\r\nd: \\Program Files \\Microsoft Visual Studio 9.0 \\Common7\\IDE>exit\r\n";
string result = Regex.Replace(values2, pattern2, "$1");
Response.Write(result);