unicode编码转换为中文

//unicode编码转换为中文
    public static string UnicodeToGB(string text)
    {
        System.Text.RegularExpressions.MatchCollection mc = System.Text.RegularExpressions.Regex.Matches(text, "\\\\u([\\w]{4})");
        if (mc != null && mc.Count > 0)
        {
            foreach (System.Text.RegularExpressions.Match m2 in mc)
            {
                string v = m2.Value;
                string word = v.Substring(2);
                byte[] codes = new byte[2];
                int code = System.Convert.ToInt32(word.Substring(0, 2), 16);
                int code2 = System.Convert.ToInt32(word.Substring(2), 16);
                codes[0] = (byte)code2;
                codes[1] = (byte)code;
                text = text.Replace(v, Encoding.Unicode.GetString(codes));
            }
        }
        else
        {

        }
        return text;
    }