C#读取电子秤重量

/// /// 执行AT指令并返回 成功失败 /// /// AT指令 /// AT指令标准结束标识 /// private void ATCommand3(string ATCmd, string StCmd) { string response = ""; response = ATCommand(ATCmd, StCmd); } /// /// 执行AT指令并返回结果字符 /// /// AT指令 /// AT指令标准结束标识 /// private string ATCommand(string ATCmd, string StCmd) { string response = ""; int i; if (!ATCmd.EndsWith("\x01a")) { if (!(ATCmd.EndsWith("\r") || ATCmd.EndsWith("\r\n"))) { ATCmd = ATCmd + "\r"; } } Sp.WriteLine(ATCmd); //第一次读响应数据 if (Sp.BytesToRead > 0) { response = Sp.ReadExisting(); //去除前端多可能多读取的字符 if (response.IndexOf(ATCmd) > 0) { response = response.Substring(response.IndexOf(ATCmd)); } else { } if (response == "" || response.IndexOf(StCmd) = 0) { string[] cols = new string[100]; cols = response.Split(';'); if (cols.Length > 1) { string errorCode = cols[1]; } } } } } //读第一次没有读完的响应数据，直到读到特征数据或超时 for (i = 0; i = 0) { break; } } return response; }