@"\b(\S+)://(\S+)\b"; //匹配URL的模式
foreach (Match match in mc)
{
Console.WriteLine(match.Value);
}
Console.ReadLine();
結果:
@"\b(?<protocol>\S+)://(?<address>\S+)\b"; //匹配URL的模式,並分組
MatchCollection mc = Regex.Matches(text, pattern); //滿足pattern的匹配集合
Console.WriteLine("文本中包含的URL地址有:");
foreach (Match match in mc)
{
gc["protocol"].Value + ";Address:" + gc["address"].Value;
Console.WriteLine(outputText);
}
Console.Read();
示例2:使用帶兩個參數的構造函數,第二個參數指示忽略大小寫,很常用
var source = "123abc345DEf";
Regex regex = new Regex("def",RegexOptions.IgnoreCase);
if (regex.IsMatch(source))
{
Console.WriteLine("字符串中包含有敏感詞:def!");
}
Console.ReadLine();
使用Regex類進行替換
示例1:簡單情況
var source = "123abc456ABC789";
// 靜態方法
//var newSource=var newSource = Console.WriteLine("替換后的字符串:" + newSource);
Console.ReadLine();
結果:
原字符串:123abc456ABC789
替換后的字符串:123|456|789
示例2:將匹配到的選項替換為html代碼,我們使用了MatchEvaluator委托
var source = "123abc456ABCD789";
Regex regex = new Regex("[A-Z]{3}", RegexOptions.IgnoreCase);
var newSource = Console.WriteLine("替換后的字符串:" + newSource);
Console.ReadLine();
private static string OutPutMatch(Match match)
{
return "<b>" +match.Value+ "</b>";
}
輸出:
原字符串:123abc456ABCD789
替換后的字符串:123<b>abc</b>456<b>ABC</b>D789