C#判斷IP格式 獲得當前用戶端IP

來源:互聯網
上載者:User

   Visual C# IP相關操作類,獲得當前用戶端IP,判斷IP格式,也就是檢測是否是IP地址,一些關於IP的基本操作,歡迎C#新手參考:

  01///

  02/// 獲得當前頁面用戶端的IP

  03///

  04/// 當前頁面用戶端的IP

  05public static string GetIP()

  06{

  07 string result = String.Empty;

  08 result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];

  09 if (null == result || result == String.Empty)

  10 {

  11 result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];

  12 }

  13 if (null == result || result == String.Empty)

  14 {

  15 result = HttpContext.Current.Request.UserHostAddress;

  16 }

  17 if (null == result || result == String.Empty || !IsIP(result))

  18 {

  19 return "0.0.0.0";

  20 }

  21 return result;

  22}

  23///

  24/// 是否為ip

  25///

  26///

  27///

  28public static bool IsIP(string ip)

  29{

  30 return Regex.IsMatch(ip, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$");

  31}

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