詳解C#常用正則驗證函式的範例程式碼

這篇文章主要介紹了C#常用正則驗證http://www.php.cn/wiki/145.html" target="_blank">函數,舉例分析了C#針對IP驗證、價格驗證及正整數驗證的相關操作技巧,需要的朋友可以參考下

本文執行個體講述了C#常用正則驗證函式。分享給大家供大家參考，具體如下：

1、Ip地址驗證

/// <summary>/// Ip地址驗證/// </summary>public static bool CheckIp(string ip){  bool result = false;  Regex ipReg = new Regex(@"^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.  (\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$");  if (ipReg.IsMatch(ip))  {    result = true;  }  return result;}

2、價格驗證

/// <summary>/// 價格驗證/// </summary>/// <param name="priceStr"></param>/// <returns></returns>public bool CheckPrice(string priceStr){  bool result = false;  Regex regex = new Regex(@"^\d+(\.\d{1,2})?$", RegexOptions.IgnoreCase);  Match match = regex.Match(priceStr);  if (match.Success)  {    result = true;  }  return result;}

3、正整數驗證

/// <summary>/// 正整數驗證/// </summary>public static bool CheckPositiveInteger(string numStr){  bool result = false;  Regex regex = new Regex(@"^[1-9]\d*$", RegexOptions.IgnoreCase);  Match match = regex.Match(numStr);  if (match.Success)  {    result = true;  }  return result;}