This is a discussion on How to Validate IPAddress using C#? within the C# Programming forums, part of the Software Development category; How to Validate IPAddress using C#?...
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| Validating IPAddress using Regular Expression in C#. public bool IsValidIPAddress(string ipAddr) { string pattern = @"^([1-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])(\.([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])){3}$"; Regex reg = new Regex(pattern, RegexOptions.Singleline | RegexOptions.ExplicitCapture); return reg.IsMatch(ipAddr); } |
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