如何在ASP.NET中向串行端口或USB端口发送和接收数据? [英] How can I send and receive data to a serial port or USB port in ASP.NET?
问题描述
我正在开发用于停车的Web应用程序.我想用连接到USB端口的设备控制网关入口，但是我们知道浏览器位于
I am developing a web application for a parking. I want to control a gateway entrance with a device connected to USB port, but we know that the browser is in a sandbox, so there isn't any access to the computer's port.
我在网上搜索后发现，有可能通过 ActiveX 进行搜索/or Java小程序，但是我对这些东西还是新手，想要完整的教程或一本描述它的维基书籍，甚至是相对于它的类库.
I searched the web and found out there is some possibility to do so via ActiveX and/or Java applets, but I'm a novice to these things and want a complete tutorial or a wiki book that describe it or even class libraries relative to.
我想通过ASP.NET应用程序(客户端)将数据发送到USB或COM端口.我知道，由于安全问题，浏览器无法执行此操作.什么是使用ActiveX的示例?
I want to send data to a USB or COM port via an ASP.NET application (client side). I know that browsers aren't able to do so because of security issues. What would be an example of using ActiveX?
推荐答案
您需要在服务器上托管ASP.NET 应用程序/网站.您的浏览器在客户端计算机上.您的客户端将从服务器请求页面，并且该网站无法托管在客户端计算机上.
You need to host an ASP.NET application/website on a server. Your browser is on a client machine. Your client will request a page from the server and the website could not be hosted on the client machine.
因此，您可以将设备连接到服务器计算机，客户端会通过该设备向您发送发布数据的请求，例如GSM调制解调器.现在，您需要将设备连接到服务器，然后可以创建 Windows 服务以拉出从数据库发布消息以通过设备发布它们.
So you can connect your device to a server machine and the client sends you request to post data through a device, e.g. a GSM modem. Now you need to connect your device to the server and you can make a Windows service to pull the posted message from the database to post them through the device.
您需要与COM端口通信.甚至您的USB设备也监听COM端口.您可以使用串行端口类与设备进行通信.您可以使用桌面应用程序执行此操作，并且我看不到使用网站的任何原因.以下链接将为您提供帮助.
You need to talk to a COM port. Even your USB devices listen to a COM port. You can use the serial port class to communicate with the device. You can do this with a desktop application and I could not see any reason for using a website. The following links will help you.
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