/// UTF-7转换GB2312编码的方法 /// </summary> /// <param name="str7"></param> /// <returns></returns> public static string utf72Unicode(string str7) { string sUtf7 = ""; if (str7.StartsWith("&")) { sUtf7 = "+" + str7.Substring(1); } else { sUtf7 = str7; } byte[] bytes = System.Text.Encoding.GetEncoding("gb2312").GetBytes(sUtf7); byte[] byteret = System.Text.Encoding.Convert(System.Text.Encoding.UTF7, System.Text.Encoding.Unicode, bytes); string sret = System.Text.Encoding.Unicode.GetString(byteret); return sret; }