c#替換空格

        public static string Escape(string id)
        {
            if (string.IsNullOrEmpty(id))return string.Empty;
            char[] chars =
            {
                (char) 0x00, (char) 0x01, (char) 0x02, (char) 0x03, (char) 0x04, (char) 0x05,
                (char) 0x06, (char) 0x07, (char) 0x08, (char) 0x09, (char) 0x0a, (char) 0x0b, 
                (char) 0x0e, (char) 0x0f, (char) 0xc2, (char) 0xa0, (char) 0x0c, (char) 0x0d,
                (char) 0x10, (char) 0x11, (char) 0x12, (char) 0x13, (char) 0x14, (char) 0x15,
                (char) 0x18, (char) 0x19, (char) 0x20, (char) 0x16, (char) 0x17, (char) 0x1f,
                (char) 0x1a, (char) 0x1b, (char) 0x1c, (char) 0x1d, (char) 0x1e, (char) 0x7f,
                (char) 0x85, (char) 0x2028, (char) 0x2029,(char) 0x3000
            };
            return string.Concat(id.Where(c => !chars.Contains(c)));
        }