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有一些事件通過WMI暴露,但我似乎無法找到訂閱和被警告這些事件的任何實例。特別是我想實施WmiMonitorBrightnessEvent將通知推送給Growl/Snarl。如何消耗在C#WMI活動
有一些事件通過WMI暴露,但我似乎無法找到訂閱和被警告這些事件的任何實例。特別是我想實施WmiMonitorBrightnessEvent將通知推送給Growl/Snarl。如何消耗在C#WMI活動
這是爲接收WmiMonitorBrightnessEvent
WMI事件的樣本代碼。
using System;
using System.Collections.Generic;
using System.Management;
using System.Text;
namespace GetWMI_Info
{
public class EventWatcherAsync
{
private void WmiEventHandler(object sender, EventArrivedEventArgs e)
{
Console.WriteLine("Active : " + e.NewEvent.Properties["Active"].Value.ToString());
Console.WriteLine("Brightness : " + e.NewEvent.Properties["Brightness"].Value.ToString());
Console.WriteLine("InstanceName : " + e.NewEvent.Properties["InstanceName"].Value.ToString());
}
public EventWatcherAsync()
{
try
{
string ComputerName = "localhost";
string WmiQuery;
ManagementEventWatcher Watcher;
ManagementScope Scope;
if (!ComputerName.Equals("localhost", StringComparison.OrdinalIgnoreCase))
{
ConnectionOptions Conn = new ConnectionOptions();
Conn.Username = "";
Conn.Password = "";
Conn.Authority = "ntlmdomain:DOMAIN";
Scope = new ManagementScope(String.Format("\\\\{0}\\root\\WMI", ComputerName), Conn);
}
else
Scope = new ManagementScope(String.Format("\\\\{0}\\root\\WMI", ComputerName), null);
Scope.Connect();
WmiQuery ="Select * From WmiMonitorBrightnessEvent";
Watcher = new ManagementEventWatcher(Scope, new EventQuery(WmiQuery));
Watcher.EventArrived += new EventArrivedEventHandler(this.WmiEventHandler);
Watcher.Start();
Console.Read();
Watcher.Stop();
}
catch (Exception e)
{
Console.WriteLine("Exception {0} Trace {1}", e.Message, e.StackTrace);
}
}
public static void Main(string[] args)
{
Console.WriteLine("Listening {0}", "WmiMonitorBrightnessEvent");
Console.WriteLine("Press Enter to exit");
EventWatcherAsync eventWatcher = new EventWatcherAsync();
Console.Read();
}
}
}
如果你是新來的WMI嘗試使用像WMI Delphi Code Creator
的工具和閱讀有關這個話題Receiving a WMI Event
你有什麼代碼到目前爲止的文件?你有沒有回顧過等待創建WMI實例的例子[這裏](http://msdn.microsoft.com/en-us/library/system.management.managementeventwatcher.aspx)? – Richard 2012-07-28 16:30:30
使用WMI Code Creator實用程序,單擊「接收事件」選項卡。它會自動爲您生成C#代碼。這個在我的機器上不起作用,並不罕見。 – 2012-07-28 17:39:31
@HansPassant:謝謝,從來沒有聽說過WMI代碼創建器實用程序,將檢查出來。我沒有代碼,因爲我甚至不知道從哪裏開始。下面的RRUZ答案肯定能幫助我開始。 – esac 2012-07-28 20:17:44