C#中将字符串转成 Base64 编码（小技巧）

 

        /// <summary>
        ///
        /// </summary>
        /// <param name="Str"></param>
        /// <returns></returns>
        public string ToBase64Str(string Str)
        {
            byte[] b = System.Text.Encoding.Default.GetBytes(Str);
            return Convert.ToBase64String(b);

        }
        /// <summary>
        ///
        /// </summary>
        /// <param name="Str"></param>
        /// <returns></returns>
        public string FromBase64Str(String Str)
        {
            byte[] b = Convert.FromBase64String(Str);
            return System.Text.Encoding.Default.GetString(b);
        }