windows 蓝牙编程（如何用C#编写蓝牙控制单片机）

现在很多电脑提供了蓝牙支持，很多笔记本网卡也集成了蓝牙功能，也可以采用usb蓝牙方便的连接手机等蓝牙设备进行通信。
操作蓝牙要使用类库inthehand.net.personal
首先在项目中引用该类库；

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static void main(string[] args) { bluetoothradio bluetoothradio = bluetoothradio.primaryradio; if (bluetoothradio == null) { console.writeline("没有找到本机蓝牙设备!"); } 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插入了蓝牙适配器，便会显示蓝牙相关信息：

然后我们就要利用蓝牙收发文件了：
前提是蓝牙设备(如手机)已经和pc配对了

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public partial class form1 : form { bluetoothradio radio = null;//蓝牙适配器 string sendfilename = null;//发送文件名 bluetoothaddress sendaddress = null;//发送目的地址 obexlistener listener = null;//监听器 string recdir = null;//接受文件存放目录 thread listenthread, sendthread;//发送/接收线程 public form1() { initializecomponent(); radio = bluetoothradio.primaryradio;//获取当前pc的蓝牙适配器 checkforillegalcrossthreadcalls = false;//不检查跨线程调用 if (radio == null)//检查该电脑蓝牙是否可用 { messagebox.show("这个电脑蓝牙不可用！", "提示", messageboxbuttons.ok, messageboxicon.information); } recdir = environment.getfolderpath(environment.specialfolder.desktop); labelrecdir.text = recdir; } private void buttonselectbluetooth_click(object sender, eventargs e)//选择远程蓝牙设备 { selectbluetoothdevicedialog dialog = new selectbluetoothdevicedialog(); dialog.showremembered = true;//显示已经记住的蓝牙设备 dialog.showauthenticated = true;//显示认证过的蓝牙设备 dialog.showunknown = true;//显示位置蓝牙设备 if (dialog.showdialog() == dialogresult.ok) { sendaddress = dialog.selecteddevice.deviceaddress;//获取选择的远程蓝牙地址 labeladdress.text = "地址:" + sendaddress.tostring() + " 设备名:" + dialog.selecteddevice.devicename; } } private void buttonselectfile_click(object sender, eventargs e)//选择要发送的本地文件 { openfiledialog dialog = new openfiledialog(); if (dialog.showdialog() == dialogresult.ok) { sendfilename = dialog.filename;//设置文件名 labelpath.text = path.getfilename(sendfilename); } } private void buttonsend_click(object sender, eventargs e)//发送按钮 { sendthread = new thread(sendfile);//开启发送文件线程 sendthread.start(); } private void sendfile()//发送文件方法 { obexwebrequest request = new obexwebrequest(sendaddress, path.getfilename(sendfilename));//创建网络请求 webresponse response = null; try { buttonsend.enabled = false; request.readfile(sendfilename);//发送文件 labelinfo.text = "开始发送!"; response = request.getresponse();//获取回应 labelinfo.text = "发送完成!"; } catch (system.exception ex) { messagebox.show("发送失败！", "提示", messageboxbuttons.ok, messageboxicon.warning); labelinfo.text = "发送失败!"; } finally { if (response != null) { response.close(); buttonsend.enabled = true; } } } private void buttonselectrecdir_click(object sender, eventargs e)//选择接受目录 { folderbrowserdialog dialog = new folderbrowserdialog(); dialog.description = "请选择蓝牙接收文件的存放路径"; if (dialog.showdialog() == dialogresult.ok) { recdir = dialog.selectedpath; labelrecdir.text = recdir; } } private void buttonlisten_click(object sender, eventargs e)//开始/停止监听 { if (listener == null || !listener.islistening) { radio.mode = radiomode.discoverable;//设置本地蓝牙可被检测 listener = new obexlistener(obextransport.bluetooth);//创建监听 listener.start(); if (listener.islistening) { buttonlisten.text = "停止"; labelrecinfo.text = "开始监听"; listenthread = new thread(receivefile);//开启监听线程 listenthread.start(); } } else { listener.stop(); buttonlisten.text = "监听"; labelrecinfo.text = "停止监听"; } } private void receivefile()//收文件方法 { obexlistenercontext context = null; obexlistenerrequest request = null; while (listener.islistening) { context = listener.getcontext();//获取监听上下文 if (context == null) { break; } request = context.request;//获取请求 string uristring = uri.unescapedatastring(request.rawurl);//将uri转换成字符串 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是一个inthehand.net.personal提供的窗体，用于选择蓝牙设备：

从手机往电脑发送文件需要在电脑上开启监听obexlistener，才能收到文件。

核心代码：

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bluetoothradio radio = null;//蓝牙适配器 string sendfilename = null;//发送文件名 bluetoothaddress sendaddress = null;//发送目的地址 obexlistener listener = null;//监听器 string recdir = null;//接受文件存放目录 thread listenthread, sendthread;//发送/接收线程 radio = bluetoothradio.primaryradio;//获取当前pc的蓝牙适配器 //关于蓝牙设备选择对话框 selectbluetoothdevicedialog dialog = new selectbluetoothdevicedialog(); dialog.showremembered = true;//显示已经记住的蓝牙设备 dialog.showauthenticated = true;//显示认证过的蓝牙设备 dialog.showunknown = true;//显示位置蓝牙设备 sendaddress = dialog.selecteddevice.deviceaddress;//获取选择的远程蓝牙地址 //发送文件操作 obexwebrequest request = new obexwebrequest(sendaddress, path.getfilename(sendfilename));//创建网络请求 webresponse response = null; request.readfile(sendfilename);//发送文件 response = request.getresponse();//获取回应 response.close(); //接收文件 radio.mode = radiomode.discoverable;//设置本地蓝牙可被检测 listener = new obexlistener(obextransport.bluetooth);//创建监听 listener.start(); listener.stop(); obexlistenercontext context = null; obexlistenerrequest request = null; context = listener.getcontext();//获取监听上下文 request = context.request;//获取请求 string uristring = uri.unescapedatastring(request.rawurl);//将uri转换成字符串 string recfilename = recdir + uristring; request.writefile(recfilename);//接收文件 labelrecinfo.text = "收到文件" + uristring.trimstart(new char[] { '/' }

ps：关于inthehand.net.personal
inthehand.net.personal.dll来源于32feet.net。
32feet.net是shared-source的项目，支持cf.net 2.0以及桌面版本.net framework，提供短距离领域(personal area networking technologie)的通信功能，支持bluetooth，infrared(irda)红外等. 想了解更多的信息可以参考其 官方主页，其项目的安装包和源码是放在微软的开源工程网站codeplex上面的，作为.net开发人员我们必须要上的网站就是codeplex~