Getting COM port of a Bluetooth device by device name in C #

Question

I am writing some code in C # to get a COM port that displays a Bluetooth device with a specific name. I tried several solutions similar to the ones listed here , but none of them have access to the name, as in the bluethooth settings window, as in the figure below:

If it is in this window, I am sure that there is a way to find it. Any help?

Thank you so much

Answer 1

Try the following code snippet. I use it to search for serial devices by name in the application that I use every day.

public static bool DoesSerialDeviceExist(string name) { using (var search = new ManagementObjectSearcher ("SELECT * FROM WIN32_SerialPort")) { string[] portnames = SerialPort.GetPortNames(); var ports = search.Get().Cast<ManagementBaseObject>().ToList(); var tList = (from n in portnames join p in ports on n equals p["DeviceID"].ToString() select n + " - " + p["Caption"]).ToList(); string serial = tList.FirstOrDefault(o => o.Contains(name)); bool isAvailable = false; if (serial != null) { isAvailable = true; } return isAvailable; } } 

Answer 2

  private void FillInComportComboBox() { Hashtable PortNames = new Hashtable(); string[] ports = System.IO.Ports.SerialPort.GetPortNames(); //string st = ComPortList.Text; ComPortList.Items.Clear(); if (ports.Length == 0) { ComPortList.Items.Add("ERROR: No COM ports exist"); } else { PortNames = BuildPortNameHash(ports); //foreach (string s in ports) foreach(String s in PortNames.Keys) { //ComPortList.Items.Add(s + ": " + (string)PortNames[s]); ComPortList.Items.Add(PortNames[s] + ": " + s); } } } // Begins recursive registry enumeration // <param name="oPortsToMap">array of port names (ie COM1, COM2, etc)</param> // <returns>a hashtable mapping Friendly names to non-friendly port values</returns> Hashtable BuildPortNameHash(string[] oPortsToMap) { Hashtable oReturnTable = new Hashtable(); MineRegistryForPortName("SYSTEM\\CurrentControlSet\\Enum", oReturnTable, oPortsToMap); return oReturnTable; } // Recursively enumerates registry subkeys starting with strStartKey looking for // "Device Parameters" subkey. If key is present, friendly port name is extracted. // <param name="strStartKey">the start key from which to begin the enumeration</param> // <param name="oTargetMap">hashtable that will get populated with // friendly-to-nonfriendly port names</param> // <param name="oPortNamesToMatch">array of port names (ie COM1, COM2, etc)</param> void MineRegistryForPortName(string strStartKey, Hashtable oTargetMap, string[] oPortNamesToMatch) { if (oTargetMap.Count >= oPortNamesToMatch.Length) return; RegistryKey oCurrentKey = Registry.LocalMachine; try { oCurrentKey = oCurrentKey.OpenSubKey(strStartKey); string[] oSubKeyNames = oCurrentKey.GetSubKeyNames(); if (((IList<string>)oSubKeyNames).Contains("Device Parameters") && strStartKey != "SYSTEM\\CurrentControlSet\\Enum") { object oPortNameValue = Registry.GetValue("HKEY_LOCAL_MACHINE\\" + strStartKey + "\\Device Parameters", "PortName", null); if (oPortNameValue == null || ((IList<string>)oPortNamesToMatch).Contains(oPortNameValue.ToString()) == false) return; object oFriendlyName = Registry.GetValue("HKEY_LOCAL_MACHINE\\" + strStartKey, "FriendlyName", null); string strFriendlyName = "N/A"; if (oFriendlyName != null) strFriendlyName = oFriendlyName.ToString(); if (strFriendlyName.Contains(oPortNameValue.ToString()) == false) strFriendlyName = string.Format("{0} ({1})", strFriendlyName, oPortNameValue); oTargetMap[strFriendlyName] = oPortNameValue; //oTargetMap[oPortNameValue] = strFriendlyName; } else { foreach (string strSubKey in oSubKeyNames) MineRegistryForPortName(strStartKey + "\\" + strSubKey, oTargetMap, oPortNamesToMatch); } } catch { } }