static void Main(string[] args) {   BluetoothRadio bluetoothRadio = BluetoothRadio.PrimaryRadio;   if (bluetoothRadio == null)   {   Console.WriteLine("沒有找到本機藍牙設備!");   }   else   {   Console.WriteLine("ClassOfDevice: " + bluetoothRadio.ClassOfDevice);   Console.WriteLine("HardwareStatus: " + bluetoothRadio.HardwareStatus);   Console.WriteLine("HciRevision: " + bluetoothRadio.HciRevision);   Console.WriteLine("HciVersion: " + bluetoothRadio.HciVersion);   Console.WriteLine("LmpSubversion: " + bluetoothRadio.LmpSubversion);   Console.WriteLine("LmpVersion: " + bluetoothRadio.LmpVersion);   Console.WriteLine("LocalAddress: " + bluetoothRadio.LocalAddress);   Console.WriteLine("Manufacturer: " + bluetoothRadio.Manufacturer);   Console.WriteLine("Mode: " + bluetoothRadio.Mode);   Console.WriteLine("Name: " + bluetoothRadio.Name);   Console.WriteLine("Remote:" + bluetoothRadio.Remote);   Console.WriteLine("SoftwareManufacturer: " + bluetoothRadio.SoftwareManufacturer);   Console.WriteLine("StackFactory: " + bluetoothRadio.StackFactory);   }   Console.ReadKey(); } 

public partial class Form1 : Form {   BluetoothRadio radio = null;//藍牙適配器   string sendFileName = null;//發送文件名   BluetoothAddress sendAddress = null;//發送目的地址   ObexListener listener = null;//監聽器   string recDir = null;//接受文件存放目錄   Thread listenThread, sendThread;//發送/接收線程    public Form1()   {     InitializeComponent();     radio = BluetoothRadio.PrimaryRadio;//獲取當前PC的藍牙適配器     CheckForIllegalCrossThreadCalls = false;//不檢查跨線程調用     if (radio == null)//檢查該電腦藍牙是否可用     {       MessageBox.Show("這個電腦藍牙不可用！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);     }     recDir = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);     labelRecDir.Text = recDir;   }    private void buttonSelectBluetooth_Click(object sender, EventArgs e)//選擇遠程藍牙設備   {     SelectBluetoothDeviceDialog dialog = new SelectBluetoothDeviceDialog();     dialog.ShowRemembered = true;//顯示已經記住的藍牙設備     dialog.ShowAuthenticated = true;//顯示認證過的藍牙設備     dialog.ShowUnknown = true;//顯示位置藍牙設備     if (dialog.ShowDialog() == DialogResult.OK)     {       sendAddress = dialog.SelectedDevice.DeviceAddress;//獲取選擇的遠程藍牙地址       labelAddress.Text = "地址:" + sendAddress.ToString() + "  設備名:" + dialog.SelectedDevice.DeviceName;     }   }    private void buttonSelectFile_Click(object sender, EventArgs e)//選擇要發送的本地文件   {     OpenFileDialog dialog = new OpenFileDialog();     if (dialog.ShowDialog() == DialogResult.OK)     {       sendFileName = dialog.FileName;//設置文件名       labelPath.Text = Path.GetFileName(sendFileName);     }   }    private void buttonSend_Click(object sender, EventArgs e)//發送按鈕   {     sendThread = new Thread(sendFile);//開啟發送文件線程     sendThread.Start();   }    private void sendFile()//發送文件方法   {     ObexWebRequest request = new ObexWebRequest(sendAddress, Path.GetFileName(sendFileName));//創建網絡請求     WebResponse response = null;     try     {       buttonSend.Enabled = false;       request.ReadFile(sendFileName);//發送文件       labelInfo.Text = "開始發送!";       response = request.GetResponse();//獲取回應       labelInfo.Text = "發送完成!";     }     catch (System.Exception ex)     {       MessageBox.Show("發送失?。?, "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);       labelInfo.Text = "發送失敗!";     }     finally     {       if (response != null)       {         response.Close();         buttonSend.Enabled = true;       }     }   }    private void buttonselectRecDir_Click(object sender, EventArgs e)//選擇接受目錄   {     FolderBrowserDialog dialog = new FolderBrowserDialog();     dialog.Description = "請選擇藍牙接收文件的存放路徑";     if (dialog.ShowDialog() == DialogResult.OK)     {       recDir = dialog.SelectedPath;       labelRecDir.Text = recDir;     }   }    private void buttonListen_Click(object sender, EventArgs e)//開始/停止監聽   {     if (listener == null || !listener.IsListening)     {       radio.Mode = RadioMode.Discoverable;//設置本地藍牙可被檢測       listener = new ObexListener(ObexTransport.Bluetooth);//創建監聽       listener.Start();       if (listener.IsListening)       {         buttonListen.Text = "停止";         labelRecInfo.Text = "開始監聽";         listenThread = new Thread(receiveFile);//開啟監聽線程         listenThread.Start();       }     }     else     {        listener.Stop();       buttonListen.Text = "監聽";       labelRecInfo.Text = "停止監聽";     }   }    private void receiveFile()//收文件方法   {     ObexListenerContext context = null;     ObexListenerRequest request = null;     while (listener.IsListening)     {       context = listener.GetContext();//獲取監聽上下文       if (context == null)       {         break;       }       request = context.Request;//獲取請求       string uriString = Uri.UnescapeDataString(request.RawUrl);//將uri轉換成字符串       string recFileName = recDir + uriString;       request.WriteFile(recFileName);//接收文件       labelRecInfo.Text = "收到文件" + uriString.TrimStart(new char[] { '/' });     }   }    private void Form1_FormClosed(object sender, FormClosedEventArgs e)   {     if (sendThread != null)     {       sendThread.Abort();     }     if (listenThread != null)     {       listenThread.Abort();     }     if (listener != null && listener.IsListening)     {       listener.Stop();     }   } } 

BluetoothRadio radio = null;//藍牙適配器 string sendFileName = null;//發送文件名 BluetoothAddress sendAddress = null;//發送目的地址 ObexListener listener = null;//監聽器 string recDir = null;//接受文件存放目錄 Thread listenThread, sendThread;//發送/接收線程  radio = BluetoothRadio.PrimaryRadio;//獲取當前PC的藍牙適配器  //關于藍牙設備選擇對話框 SelectBluetoothDeviceDialog dialog = new SelectBluetoothDeviceDialog(); dialog.ShowRemembered = true;//顯示已經記住的藍牙設備 dialog.ShowAuthenticated = true;//顯示認證過的藍牙設備 dialog.ShowUnknown = true;//顯示位置藍牙設備 sendAddress = dialog.SelectedDevice.DeviceAddress;//獲取選擇的遠程藍牙地址  //發送文件操作 ObexWebRequest request = new ObexWebRequest(sendAddress, Path.GetFileName(sendFileName));//創建網絡請求 WebResponse response = null; request.ReadFile(sendFileName);//發送文件 response = request.GetResponse();//獲取回應 response.Close();  //接收文件 radio.Mode = RadioMode.Discoverable;//設置本地藍牙可被檢測 listener = new ObexListener(ObexTransport.Bluetooth);//創建監聽 listener.Start(); listener.Stop();  ObexListenerContext context = null; ObexListenerRequest request = null; context = listener.GetContext();//獲取監聽上下文 request = context.Request;//獲取請求 string uriString = Uri.UnescapeDataString(request.RawUrl);//將uri轉換成字符串 string recFileName = recDir + uriString; request.WriteFile(recFileName);//接收文件 labelRecInfo.Text = "收到文件" + uriString.TrimStart(new char[] { '/' } 

PS：關于InTheHand.Net.Personal
InTheHand.Net.Personal.dll來源于32feet.NET。
32feet.NET是shared-source的項目，支持CF.net 2.0以及桌面版本.NET framework，提供短距離領域(personal area networking technologie)的通信功能，支持bluetooth，Infrared(IrDA)紅外等. 想了解更多的信息可以參考其 官方主頁，其項目的安裝包和源碼是放在微軟的開源工程網站CodePlex上面的，作為.NET開發人員我們必須要上的網站就是CodePlex~