現在很多電腦提供了藍牙支持，很多筆記本網卡也集成了藍牙功能，也可以采用USB藍牙方便的連接手機等藍牙設備進行通信。
操作藍牙要使用類庫InTheHand.Net.Personal
首先在項目中引用該類庫；
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();
}
如果PC插入了藍牙適配器，便會顯示藍牙相關信息：
然後我們就要利用藍牙收發文件了：
前提是藍牙設備(如手機)已經和PC配對了
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("發送失敗！", "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();
}
}
}
程序界面：
SelectBluetoothDeviceDialog是一個InTheHand.Net.Personal提供的窗體，用於選擇藍牙設備：
從手機往電腦發送文件需要在電腦上開啟監聽ObexListener，才能收到文件。
核心代碼：
? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37BluetoothRadio 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
//關於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：關於InTheHand.Net.Personal
InTheHand.Net.Personal.dll來源於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~
