windows - C# IMEI detection of any device connected via USB -


i working on c# desktop application detect imei of device connected via usb. got working samsung device after installing driver , running @ commands. there generic way devices.

any device supports @ command access using c# serial port class. once hold of device through serial port can send @ commands , response of commands. how can send @ command imei number , number response of @ command through uniform interface type of devices support @ commands , access through com port.

i have found following example on codeproject imei number , made little modification.

private string getimeinumber(string portname) //serial {     string key = "";     serialport serialport = new serialport();     serialport.portname = portname;     serialport.baudrate = 9600;     try     {         if (!(serialport.isopen))             serialport.open();         serialport.write("at\r\n");         thread.sleep(3000);         key = serialport.readexisting();         serialport.write("at+cgsn\r\n");         thread.sleep(3000);         key = serialport.readexisting();         serialport.close();         string serial = "";         (int = 0; < key.length; i++)             if (char.isdigit(key[i]))                 serial += key[i];         return serial;     }     catch (exception ex)     {         messagebox.show("error in opening/writing serial port :: " + ex.message, "error!");         return "";     }  }

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