Actually sounds like a candidate for an extension method on string:

    public static class DmitryExtensions
    {
        public static string Encode (this string s)
        {
            //Return encoded here
            return s;
        }
        public static string Decode(this string s)
        {
            //Return decoded here
            return s;
        }
    }

Called like:

    string text = "Hello".Encode();
    private string y = text.Decode();

    //You can also chain (thought not much sense in this particular context)
    private string chained = "Hello".Encode().Decode();

If the methods will be used in other projects put them in their own DLL and reference that when you need the methods.....



>My class String has two methods Encode and Decode where I can encode and decode a string. The encode and decode code has to be the "same" as my VFP code (to make ASP.NET compatible with VFP app). So I use my class String as following:
>
>

>cPassword = "ABCD";
>string Decoded;
>Decoded = MyNameSpace.String.Decoded( cPassword );