snippet

C# : Get Public IP Address

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Posting this code snippet, so I don’t forget it!


    public static string GetPublicIPAddress()
    {
        string result = string.Empty;

        // List of public URLs to be tried in order
        string[] checkIPUrl =
        {
            "https://ipinfo.io/ip",
            "https://checkip.amazonaws.com/",
            "https://api.ipify.org",
            "https://icanhazip.com",
            "https://wtfismyip.com/text"
        };

        using (var client = new WebClient())
        {
            client.Headers["User-Agent"] = "Mozilla/4.0 (Compatible; Windows NT 5.1; MSIE 6.0) " +
                "(compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";

            foreach (var url in checkIPUrl)
            {
                try
                {
                    result = client.DownloadString(url);
                }
                catch
                {
                    // Ignore errors 
                }

                if (!string.IsNullOrEmpty(result))
                    break;
            }
        }

        return result.Replace("\n", "").Trim();
    }

C# Code Snippet: Strip All HTML Tags

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A quick code snippet to strip all HTML tags using a regular expression. If you are going to call something like this often, then it might be an idea to set the RegEx.Options to Compiled.

using System.Text.RegularExpressions;

…

public string StripHTMLTags(string text)

{

return Regex.Replace(text, @””, string.Empty);

}

Note: I’m not suggesting using this for a full blown HTML-Sanitiser. See Jeff Atwood’s post and the subsequent comments. (Thanks Piers!)