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AT指令收发短信，需要短信猫的支持 /// <summary> /// 针对国内短信编码（USC2） /// </summary> public class USC2 { public readonly static int MAX_CHAR_COUNT = 70;//最长可发送汉字个数 /**/ /// <summary> /// 奇偶互换并补F /// </summary> /// <param name="value"></param> /// <returns></returns> private static string ParityChange(string value) { string result = string.Empty; int length = value.Length; for (int i = 1; i < length; i += 2)//奇偶互换 { result += value[i]; result += value[i - 1]; } if (!(length % 2 == 0))//不是偶数则加上F，与最后一位互换 { result += 'F'; result += value[length - 1]; } return result; } /**/ /// <summary> /// 短信内容编码 /// </summary> /// <param name="value"></param> /// <returns></returns> /// <remarks> /// 采用Big-Endian 字节顺序的 Unicode 格式编码，将高低位互换 /// 将转换后的短信内容存进字节数组 /// 去掉在进行Unicode格式编码中，两个字节中的"-",例如：00-21，变成0021 /// 将整条短信内容的长度除2，保留两位16进制数 /// </remarks> public static string Encoding(string value) { Encoding encoding = System.Text.Encoding.BigEndianUnicode; string result = string.Empty; byte[] bytes = encoding.GetBytes(value); for (int i = 0; i < bytes.Length; i++) { result += BitConverter.ToString(bytes, i, 1); } return result; } public static string EncodeingAddLength(string value) { string result = Encoding(value); return String.Format("{0:X2}{1}", result.Length / 2, result); } /**/ /// <summary> /// 短信中心号码编码 /// </summary> /// <param name="value"></param> /// <returns></returns> public static string DecodingCenter(string phone) { string result = string.Empty; result = ParityChange(phone); result = String.Format("91{0}", result);//加上91 result = String.Format("{0:X2}{1}", result.Length / 2, result); return result; }