C# 中文和unicode互转

->引用：http://blog.csdn.net/u011511086/article/details/72865006

/// <summary>  
        /// 字符串转Unicode  
        /// </summary>  
        /// <param name="source">源字符串</param>  
        /// <returns>Unicode编码后的字符串</returns>  
        public static string String2Unicode(string source)  
        {  
            var bytes = Encoding.Unicode.GetBytes(source);  
            var stringBuilder = new StringBuilder();  
            for (var i = 0; i < bytes.Length; i += 2)  
            {       
                stringBuilder.AppendFormat("\\u{0:x2}{1:x2}", bytes[i + 1], bytes[i]);  
            }  
            return stringBuilder.ToString();  
        }  
        /// <summary>    
        /// 字符串转为UniCode码字符串    
        /// </summary>    
        /// <param name="s"></param>    
        /// <returns></returns>    
        public static string StringToUnicode(string s)  
        {  
            char[] charbuffers = s.ToCharArray();  
            byte[] buffer;  
            StringBuilder sb = new StringBuilder();  
            for (int i = 0; i < charbuffers.Length; i++)  
            {  
                buffer = System.Text.Encoding.Unicode.GetBytes(charbuffers[i].ToString());  
                sb.Append(String.Format("\\u{0:X2}{1:X2}", buffer[1], buffer[0]));  
            }  
            return sb.ToString();  
        }  
        /// <summary>    
        /// Unicode字符串转为正常字符串    
        /// </summary>    
        /// <param name="srcText"></param>    
        /// <returns></returns>    
        public static string UnicodeToString(string srcText)  
        {  
            string dst = "";  
            string src = srcText;  
            int len = srcText.Length / 6;  
            for (int i = 0; i <= len - 1; i++)  
            {  
                string str = "";  
                str = src.Substring(0, 6).Substring(2);  
                src = src.Substring(6);  
                byte[] bytes = new byte[2];  
                bytes[1] = byte.Parse(int.Parse(str.Substring(0, 2), System.Globalization.NumberStyles.HexNumber).ToString());  
                bytes[0] = byte.Parse(int.Parse(str.Substring(2, 2), System.Globalization.NumberStyles.HexNumber).ToString());  
                dst += Encoding.Unicode.GetString(bytes);  
            }  
            return dst;  
        }