当前位置：文江博客话题详情

如何通过C#释放句柄？

发布于 2024-07-30 18:02:38 字数 79 浏览 4 评论 0原文

我有一个应用程序隐式打开 dll/文件上的句柄。在应用程序的某个时刻，我想释放这个句柄。我该怎么做？我的应用程序是用 C# 编写的。

原文

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

俏︾媚 2024-08-06 18:02:38

如果您有要关闭的处理程序，请使用 PInvoke

[System.Runtime.InteropServices.DllImport("Kernel32")]
private extern static Boolean CloseHandle(IntPtr handle);

use PInvoke if you have an handler that you want to close

[System.Runtime.InteropServices.DllImport("Kernel32")]
private extern static Boolean CloseHandle(IntPtr handle);

回复收藏 0 原文

丢了幸福的猪 2024-08-06 18:02:38

你到底想做什么？如果您想加载一个程序集来执行一些操作，然后将其完全卸载，则需要依赖于创建一个新的应用程序域。

public static void Main(string[] args)
{
AppDomain appDomain = AppDomain.CreateDomain("NewAppDomain");
appDomain.DoCallBack(new CrossAppDomainDelegate(AsmLoad));

// At this point, your assembly is locked, you can't delete

AppDomain.Unload(appDomain);
Console.WriteLine("AppDomain unloaded");

//You've completely unloaded your assembly. Now if you want, you can delete the same

}

public static void AsmLoad()
{
Assembly assembly = Assembly.LoadFrom(@"c:\Yourassembly.dll");

//Loaded to the new app domain. You can do some stuff here
Console.WriteLine("Assembly loaded in {0}",AppDomain.CurrentDomain.FriendlyName);
}

查看这篇文章了解更多信息，http://blogs .msdn.com/suzcook/archive/2003/07/08/57211.aspx

或者，如果您只是担心
保持文件锁定，您可以使用
影子复制。这将制作一份副本
磁盘上的文件并将其加载
新地点。原始文件
不会被该负载锁定。到
这样做，设置
AppDomainSetup.ShadowCopyFiles 到
创建 AppDomain 时为“true”或
将 AppDomain.ShadowCopyFiles 设置为 true
创建完成后。

What exactly you are trying to do? If you want to load an assembly to do some stuff with that, and then unload it completely, you need to rely on creating a new app domain.

public static void Main(string[] args)
{
AppDomain appDomain = AppDomain.CreateDomain("NewAppDomain");
appDomain.DoCallBack(new CrossAppDomainDelegate(AsmLoad));

// At this point, your assembly is locked, you can't delete

AppDomain.Unload(appDomain);
Console.WriteLine("AppDomain unloaded");

//You've completely unloaded your assembly. Now if you want, you can delete the same

}

public static void AsmLoad()
{
Assembly assembly = Assembly.LoadFrom(@"c:\Yourassembly.dll");

//Loaded to the new app domain. You can do some stuff here
Console.WriteLine("Assembly loaded in {0}",AppDomain.CurrentDomain.FriendlyName);
}

Have a look at this post for more, http://blogs.msdn.com/suzcook/archive/2003/07/08/57211.aspx

Or, if you're only worried about
keeping the file locked, you could use
shadow copying. That will make a copy
of the file on disk and load it from
the new location. The original file
will not be locked by that load. To
do that, set
AppDomainSetup.ShadowCopyFiles to
"true" when creating the AppDomain or
set AppDomain.ShadowCopyFiles to true
after it's already been created.

回复收藏 0 原文