DotNet Soundex Function

Question

I have a database table that has a column of SQLServer Soundex encoded last name + first name. In my C# program I would like to convert a string using soundex for use in my

Answer 1

You could use something like this in c# per SQL

public static string Soundex(string data)
    {
        StringBuilder result = new StringBuilder();

        if (data != null && data.Length > 0)
        {
            string previousCode = "", currentCode = "", currentLetter = "";

            result.Append(data.Substring(0, 1));

            for (int i = 1; i < data.Length; i++) 
            {
                currentLetter = data.Substring(i, 1).ToLower();
                currentCode = "";

                if ("bfpv".IndexOf(currentLetter) > -1)
                    currentCode = "1";

                else if ("cgjkqsxz".IndexOf(currentLetter) > -1)
                    currentCode = "2";

                else if ("dt".IndexOf(currentLetter) > -1)
                    currentCode = "3";


                else if (currentLetter == "l")
                    currentCode = "4";

                else if ("mn".IndexOf(currentLetter) > -1)
                    currentCode = "5";

                else if (currentLetter == "r")
                    currentCode = "6";

                if (currentCode != previousCode)
                    result.Append(currentCode);

                if (result.Length == 4) break;

                if (currentCode != "")
                    previousCode = currentCode;

            }
        }
        if (result.Length < 4)
            result.Append(new String('0', 4 - result.Length));

        return result.ToString().ToUpper();
    }