我正在尝试检测事件是否通过Winform C＃应用程序从PC上拔出任何model.fit(xs, ys, {
callbacks: {
onTrainBegin: async () => {
console.log("onTrainBegin")
},
onTrainEnd: async (epoch, logs) => {
console.log("onTrainEnd" + epoch + JSON.stringify(logs))
},
onEpochBegin: async (epoch, logs) => {
console.log("onEpochBegin" + epoch + JSON.stringify(logs))
},
onEpochEnd: async (epoch, logs) => {
console.log("onEpochEnd" + epoch + JSON.stringify(logs))
},
onBatchBegin: async (epoch, logs) => {
console.log("onBatchBegin" + epoch + JSON.stringify(logs))
},
onBatchEnd: async (epoch, logs) => {
console.log("onBatchEnd" + epoch + JSON.stringify(logs))
}
}
})
。我在互联网上发现了几种方法stackoverflow：
usb结果是我什么都不输出。
第二次尝试没有任何结果，或者using System;
using System.Management;
namespace USB
{
class Program
{
public enum EventType { Inserted = 2, Removed = 3 }
static void Main(string[] args)
{
ManagementEventWatcher watcher = new ManagementEventWatcher();
WqlEventQuery query = new WqlEventQuery("SELECT * FROM Win32_VolumeChangeEvent WHERE EventType = 2 or EventType = 3");
watcher.EventArrived += (s, e) =>
{
string driveName = e.NewEvent.Properties["DriveName"].Value.ToString();
EventType eventType = (EventType)(Convert.ToInt16(e.NewEvent.Properties["EventType"].Value));
string eventName = Enum.GetName(typeof(EventType), eventType);
Console.WriteLine("{0}: {1} {2}", DateTime.Now, driveName, eventName);
};
watcher.Query = query;
watcher.Start();
Console.ReadKey();
}
}
}
行出现异常：
“ System.InvalidCastException”类型的异常发生在 USB.exe，但未用用户代码处理
ManagementBaseObject mbo = (ManagementBaseObject)pdData.Value;或这种方式，但我不太了解namespace USB
{
class Program
{
static void Main(string[] args)
{
var watcher = new ManagementEventWatcher();
var query = new WqlEventQuery("SELECT * FROM Win32_DeviceChangeEvent WHERE EventType = 2");
watcher.EventArrived += new EventArrivedEventHandler(watcher_EventArrived);
watcher.Query = query;
watcher.Start();
Console.ReadLine();
}
static void watcher_EventArrived(object sender, EventArrivedEventArgs e)
{
bool bUSBEvent = false;
foreach (PropertyData pdData in e.NewEvent.Properties)
{
ManagementBaseObject mbo = (ManagementBaseObject)pdData.Value;
if (mbo != null)
{
foreach (PropertyData pdDataSub in mbo.Properties)
{
if (pdDataSub.Name == "InterfaceType" && pdDataSub.Value.ToString() == "USB")
{
bUSBEvent = true;
break;
}
}
if (bUSBEvent)
{
if (e.NewEvent.ClassPath.ClassName == "__InstanceCreationEvent")
{
Console.WriteLine("USB was plugged in");
}
else if (e.NewEvent.ClassPath.ClassName == "__InstanceDeletionEvent")
{
Console.WriteLine("USB was plugged out");
}
}
}
}
}
}
}
必须是什么：
msScope在这一过程中，我不确定如何处理事件本身：
namespace USB
{
class Program
{
static void Main(string[] args)
{
WqlEventQuery weqQuery = new WqlEventQuery();
weqQuery.EventClassName = "__InstanceOperationEvent";
weqQuery.WithinInterval = new TimeSpan(0, 0, 3);
weqQuery.Condition = @"TargetInstance ISA 'Win32_DiskDrive'";
var m_mewWatcher = new ManagementEventWatcher();
m_mewWatcher = new ManagementEventWatcher(msScope, weqQuery);
m_mewWatcher.EventArrived += new EventArrivedEventHandler(m_mewWatcher_EventArrived);
m_mewWatcher.Start();
Console.ReadLine();
}
static void m_mewWatcher_EventArrived(object sender, EventArrivedEventArgs e)
{
bool bUSBEvent = false;
foreach (PropertyData pdData in e.NewEvent.Properties)
{
ManagementBaseObject mbo = (ManagementBaseObject)pdData.Value;
if (mbo != null)
{
foreach (PropertyData pdDataSub in mbo.Properties)
{
if (pdDataSub.Name == "InterfaceType" && pdDataSub.Value.ToString() == "USB")
{
bUSBEvent = true;
break;
}
}
if (bUSBEvent)
{
if (e.NewEvent.ClassPath.ClassName == "__InstanceCreationEvent")
{
Console.WriteLine("USB was plugged in");
}
else if (e.NewEvent.ClassPath.ClassName == "__InstanceDeletionEvent")
{
Console.WriteLine("USB was plugged out");
}
}
}
}
}
}
}
此外，我已经在表单应用程序中尝试过此方法，但是输出却一无所获：
using System;
using System.Management;
using System.ComponentModel;
namespace USB
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine();
Console.ReadLine();
}
private void DeviceInsertedEvent(object sender, EventArrivedEventArgs e)
{
ManagementBaseObject instance = (ManagementBaseObject)e.NewEvent["TargetInstance"];
foreach (var property in instance.Properties)
{
Console.WriteLine(property.Name + " = " + property.Value);
}
}
private void DeviceRemovedEvent(object sender, EventArrivedEventArgs e)
{
ManagementBaseObject instance = (ManagementBaseObject)e.NewEvent["TargetInstance"];
foreach (var property in instance.Properties)
{
Console.WriteLine(property.Name + " = " + property.Value);
}
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
WqlEventQuery insertQuery = new WqlEventQuery("SELECT * FROM __InstanceCreationEvent WITHIN 2 WHERE TargetInstance ISA 'Win32_USBHub'");
ManagementEventWatcher insertWatcher = new ManagementEventWatcher(insertQuery);
insertWatcher.EventArrived += new EventArrivedEventHandler(DeviceInsertedEvent);
insertWatcher.Start();
WqlEventQuery removeQuery = new WqlEventQuery("SELECT * FROM __InstanceDeletionEvent WITHIN 2 WHERE TargetInstance ISA 'Win32_USBHub'");
ManagementEventWatcher removeWatcher = new ManagementEventWatcher(removeQuery);
removeWatcher.EventArrived += new EventArrivedEventHandler(DeviceRemovedEvent);
removeWatcher.Start();
System.Threading.Thread.Sleep(20000000);
}
}
}
并以这种方式得到相同的结果：
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Windows.Forms;
using System.IO;
namespace USB
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Console.WriteLine( GetConnectedDevices());
textBox1.Text = String.Join(Environment.NewLine, GetConnectedDevices());
}
public static List<System.IO.DriveInfo> GetConnectedDevices()
{
System.IO.DriveInfo[] myDrives = System.IO.DriveInfo.GetDrives();
List<System.IO.DriveInfo> Drives = new List<System.IO.DriveInfo>();
return myDrives.Where(info => (info.DriveType == System.IO.DriveType.Removable && info.IsReady)).ToList();
}
}
}