blocks|key|1565633|text|为此，您需要使用WMI。请参阅http://msdn.microsoft.com/en-us/library/aa393035.aspx|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1565634|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/aa393035.aspx^0|F|1H|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

You'll need to utilize WMI for it. See <a href="http://msdn.microsoft.com/en-us/library/aa393035.aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/aa393035.aspx</a>

blocks|key|1565693|text|您是否仅限于使用WMI？如果没有，您可以使用像RegistryMonitor这样的RegNotifyChangeKeyValue包装器|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1565694|entityMap|0|LINK|mutability|MUTABLE|url|http://www.codeproject.com/Articles/4502/RegistryMonitor-a-NET-wrapper-class-for-RegNotifyC|1|http://www.pinvoke.net/default.aspx/advapi32/RegNotifyChangeKeyValue.html^0|N|F|0|15|N|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

Are you limited to WMI?
If not you can use <a href="http://www.pinvoke.net/default.aspx/advapi32/RegNotifyChangeKeyValue.html" rel="nofollow noreferrer">RegNotifyChangeKeyValue</a> wrappers like <a href="http://www.codeproject.com/Articles/4502/RegistryMonitor-a-NET-wrapper-class-for-RegNotifyC" rel="nofollow noreferrer">RegistryMonitor</a>

blocks|key|1565763|text|使用WMI有时会很有趣……我想我理解你的问题，所以看看下面的代码片段，如果它是你要找的，请告诉我。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1565764|//+---------------------------------------------------------------------------------------------------------------------+
//+<copyright+file="Program.cs"+company="">
//+++
//+</copyright>
//+<summary>
//+++Defines+the+WmiChangeEventTester+type.
//+</summary>
//+---------------------------------------------------------------------------------------------------------------------
namespace+WmiExample
{
++++using+System;
++++using+System.Management;

++++///+<summary>
++++///+</summary>
++++public+class+WmiChangeEventTester
++++{
++++++++///+<summary>
++++++++///+Initializes+a+new+instance+of+the+<see+cref="WmiChangeEventTester"/>+class.
++++++++///+</summary>
++++++++public+WmiChangeEventTester()
++++++++{
++++++++++++try
++++++++++++{
++++++++++++++++//+Your+query+goes+below;+"KeyPath"+is+the+key+in+the+registry+that+you
++++++++++++++++//+want+to+monitor+for+changes.+Make+sure+you+escape+the+\+character.
++++++++++++++++WqlEventQuery+query+=+new+WqlEventQuery(
+++++++++++++++++++++"SELECT+*+FROM+RegistryValueChangeEvent+WHERE+"+%2B
+++++++++++++++++++++"Hive+=+'HKEY_LOCAL_MACHINE'"+%2B
+++++++++++++++++++++@"AND+KeyPath+=+'SOFTWARE\\Microsoft\\.NETFramework'+AND+ValueName='InstallRoot'");

++++++++++++++++ManagementEventWatcher+watcher+=+new+ManagementEventWatcher(query);
++++++++++++++++Console.WriteLine("Waiting+for+an+event...");

++++++++++++++++//+Set+up+the+delegate+that+will+handle+the+change+event.
++++++++++++++++watcher.EventArrived+%2B=+new+EventArrivedEventHandler(HandleEvent);

++++++++++++++++//+Start+listening+for+events.
++++++++++++++++watcher.Start();

++++++++++++++++//+Do+something+while+waiting+for+events.+In+your+application,
++++++++++++++++//+this+would+just+be+continuing+business+as+usual.
++++++++++++++++System.Threading.Thread.Sleep(100000000);

++++++++++++++++//+Stop+listening+for+events.
++++++++++++++++watcher.Stop();
++++++++++++}
++++++++++++catch+(ManagementException+managementException)
++++++++++++{
++++++++++++++++Console.WriteLine("An+error+occurred:+"+%2B+managementException.Message);
++++++++++++}
++++++++}

++++++++///+<summary>
++++++++///+</summary>
++++++++///+<param+name="sender">
++++++++///+The+sender.
++++++++///+</param>
++++++++///+<param+name="e">
++++++++///+The+e.
++++++++///+</param>
++++++++private+void+HandleEvent(object+sender,+EventArrivedEventArgs+e)
++++++++{
++++++++++++Console.WriteLine("Received+an+event.");
++++++++++++//+RegistryKeyChangeEvent+occurs+here;+do+something.
++++++++}

++++++++///+<summary>
++++++++///+</summary>
++++++++public+static+void+Main()
++++++++{
++++++++++++//+Just+calls+the+class+above+to+check+for+events...
++++++++++++WmiChangeEventTester+receiveEvent+=+new+WmiChangeEventTester();
++++++++}
++++}
}|code-block|syntax|javascript|1565765|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

WMI can sometimes be interesting to work with...I think I understand your question, so take a look at the code snippet below and let me know if it's what you're looking for.

<pre><code>// --------------------------------------------------------------------------------------------------------------------- 
// &lt;copyright file="Program.cs" company=""&gt;
// 
// &lt;/copyright&gt;
// &lt;summary&gt;
// Defines the WmiChangeEventTester type.
// &lt;/summary&gt;
// ---------------------------------------------------------------------------------------------------------------------
namespace WmiExample
{
 using System;
 using System.Management;

 /// &lt;summary&gt;
 /// &lt;/summary&gt;
 public class WmiChangeEventTester
 {
 /// &lt;summary&gt;
 /// Initializes a new instance of the &lt;see cref="WmiChangeEventTester"/&gt; class.
 /// &lt;/summary&gt;
 public WmiChangeEventTester()
 {
 try
 {
 // Your query goes below; "KeyPath" is the key in the registry that you
 // want to monitor for changes. Make sure you escape the \ character.
 WqlEventQuery query = new WqlEventQuery(
 "SELECT * FROM RegistryValueChangeEvent WHERE " +
 "Hive = 'HKEY_LOCAL_MACHINE'" +
 @"AND KeyPath = 'SOFTWARE\\Microsoft\\.NETFramework' AND ValueName='InstallRoot'");

 ManagementEventWatcher watcher = new ManagementEventWatcher(query);
 Console.WriteLine("Waiting for an event...");

 // Set up the delegate that will handle the change event.
 watcher.EventArrived += new EventArrivedEventHandler(HandleEvent);

 // Start listening for events.
 watcher.Start();

 // Do something while waiting for events. In your application,
 // this would just be continuing business as usual.
 System.Threading.Thread.Sleep(100000000);

 // Stop listening for events.
 watcher.Stop();
 }
 catch (ManagementException managementException)
 {
 Console.WriteLine("An error occurred: " + managementException.Message);
 }
 }

 /// &lt;summary&gt;
 /// &lt;/summary&gt;
 /// &lt;param name="sender"&gt;
 /// The sender.
 /// &lt;/param&gt;
 /// &lt;param name="e"&gt;
 /// The e.
 /// &lt;/param&gt;
 private void HandleEvent(object sender, EventArrivedEventArgs e)
 {
 Console.WriteLine("Received an event.");
 // RegistryKeyChangeEvent occurs here; do something.
 }

 /// &lt;summary&gt;
 /// &lt;/summary&gt;
 public static void Main()
 {
 // Just calls the class above to check for events...
 WmiChangeEventTester receiveEvent = new WmiChangeEventTester();
 }
 }
}
</code></pre>

blocks|key|1350370|text|正如其他人所指出的那样，您真的不需要WMI。我也使用过RegistryMonitor，没有任何问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1350371|如果您需要一个示例，页面本身上已经提供了RegistryMonitor的示例代码。您是否向下滚动到代码项目上的这一部分：|1350372|public+class+MonitorSample
{
++++static+void+Main()+
++++{
++++++++RegistryMonitor+monitor+=+new+
++++++++++RegistryMonitor(RegistryHive.CurrentUser,+"Environment");
++++++++monitor.RegChanged+%2B=+new+EventHandler(OnRegChanged);
++++++++monitor.Start();

++++++++while(true);

++++++++monitor.Stop();
++++}

++++private+void+OnRegChanged(object+sender,+EventArgs+e)
++++{
++++++++Console.WriteLine("registry+key+has+changed");
++++}
}|code-block|syntax|javascript|1350373|entityMap|0|LINK|mutability|MUTABLE|url|http://www.codeproject.com/KB/system/registrymonitor.aspx^0|R|F|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

You really don't need WMI, as others have pointed out. I too have used <a href="http://www.codeproject.com/KB/system/registrymonitor.aspx" rel="nofollow noreferrer">RegistryMonitor</a> with no problems.

If you need an example, there's already example code for the RegistryMonitor on the page itself. Did you scroll down to this bit on the code project:

<pre><code>public class MonitorSample
{
 static void Main() 
 {
 RegistryMonitor monitor = new 
 RegistryMonitor(RegistryHive.CurrentUser, "Environment");
 monitor.RegChanged += new EventHandler(OnRegChanged);
 monitor.Start();

 while(true);

 monitor.Stop();
 }

 private void OnRegChanged(object sender, EventArgs e)
 {
 Console.WriteLine("registry key has changed");
 }
}
</code></pre>

I'm a newbie to WMI and I need to implement <a href="http://msdn.microsoft.com/en-us/library/aa393042(VS.85).aspx" rel="noreferrer">RegistryValueChangeEvent</a> in a C# service.

I need an event handler that gets triggered each time any one of a set of registry values is changed. I want behavior similar to the <a href="http://msdn.microsoft.com/en-us/library/system.io.filesystemwatcher.aspx" rel="noreferrer">FileSystemWatcher</a> class's <a href="http://msdn.microsoft.com/en-us/library/system.io.filesystemwatcher.changed.aspx" rel="noreferrer">Changed</a> event, but for registry values.

If there's some other technique I could use to accomplish the same task, I'd appreciate that as well. My minimum requirement is that it be a better solution than what I have now: polling every 20 seconds and comparing the registry value with the last result. 

Please provide example code in your answer. If I can get an example for watching just one registry value, that would be fine.

I need a solution in .Net 2.0

Thanks.

Registry Watcher C#

Hive

我是WMI的新手，我需要在C#服务中实现。我需要一个事件处理程序，每当一组注册表值中的任何一个发生更改时都会触发。我希望行为类似于类的事件，但用于注册表值。如果有其他技术可以用来完成同样的任务，我也会很感激。我的最低要求是它是一个比我现在拥有的更好的解决方案:每20秒轮询一次，并将注册表值与最后的结果进行比较。请在您的...

问注册表监视器C#
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