如何从 C# 循环 USB 设备? [英] How can I cycle a USB device from C#?

问题描述

我想在某个事件触发后循环(模拟拔出并重新插入)USB 设备(调制解调器).我在 codeproject 上找到了一个示例:

I'd like to cycle (simulate unplug and re-inserting) a USB device (modem) after a certain event has fired. I found a sample on codeproject:

http://www.codeproject.com/KB/system/usbeject.aspx

这使我能够通过其非易失性序列识别并弹出设备，但我需要它进行回收，而不仅仅是弹出.

That allows me to identify+eject the device via its non-volatile serial, but I need it to recycle, not just eject.

我读过这个:

http://www.tech-archive.net/Archive/Development/microsoft.public.development.device.drivers/2005-02/1292.html

我不明白.

这已在其他 USB 相关帖子中提及:

This has been mentioned in other USB related posts:

http://www.codeproject.com/KB/system/DriveDetector.aspx

这与我的问题无关.

推荐答案

使用名为 devcon 的命令行工具使其工作，然后我从代码中调用它.

Got it working by using a commandline tool called devcon, which I then called from code.

将 devcon.exe 放入系统路径之一，以便在任何地方都可以使用.

Dropped devcon.exe into one of the system paths so it works everywhere.

开发者大会:开发者大会

调用:DEVCON Remove *usb"*MI_01"

called: DEVCON Remove *usb"*MI_01"

然后调用:DEVCON rescan

then called: DEVCON rescan

代码:

 System.Diagnostics.Process proc = new System.Diagnostics.Process();
 proc.StartInfo.FileName = "DEVCON";
 proc.StartInfo.Arguments = "Remove *usb"*MI_01";
 proc.StartInfo.RedirectStandardError = true;
 proc.StartInfo.RedirectStandardOutput = true;
 proc.StartInfo.UseShellExecute = false;
 proc.Start();

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