在应用程序重新启动时清除临时ASP.NET文件

我们在启动时动态加载程序集，并将其添加为引用：

BuildManager.AddReferencedAssembly(assembly);

该应用程序支持在运行时安装新插件。在执行安装/卸载操作后，我们将重新启动web应用程序。我试过：

HostingEnvironment.InitiateShutdown();

及

但是，插件的新版本没有加载-我相信这是由于ASP.NET如何积极缓存引用的程序集-尤其是ASP.NET MVC控制器

在生产中，这应该不是问题，因为插件程序集版本每次都会增加。然而，在开发过程中，这是一个更大的问题，因为我们不希望每次对插件进行轻微更改时都更改版本号

如何强制清除临时asp.net文件（通过编程方式或使用生成后事件）

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一种解决方案是“touch”global.asax，但这对我来说似乎有点不方便。

我使用以下代码按需重置应用程序池。（只需将其连接到控制器操作）

注意：由于它是应用程序池，您可能需要检查对同一应用程序池上运行的任何其他应用程序的影响

public class IisManager
{
    public static string GetCurrentApplicationPoolId()
    {
        // Application is not hosted on IIS
        if (!AppDomain.CurrentDomain.FriendlyName.StartsWith("/LM/"))
            return string.Empty;
        // Application hosted on IIS that doesn't support App Pools, like 5.1
        else if (!DirectoryEntry.Exists("IIS://Localhost/W3SVC/AppPools"))
            return string.Empty;

        string virtualDirPath = AppDomain.CurrentDomain.FriendlyName;
        virtualDirPath = virtualDirPath.Substring(4);
        int index = virtualDirPath.Length + 1;
        index = virtualDirPath.LastIndexOf("-", index - 1, index - 1);
        index = virtualDirPath.LastIndexOf("-", index - 1, index - 1);
        virtualDirPath = "IIS://localhost/" + virtualDirPath.Remove(index);
        var virtualDirEntry = new DirectoryEntry(virtualDirPath);
        return virtualDirEntry.Properties["AppPoolId"].Value.ToString();
    }


    public static void RecycleApplicationPool(string appPoolId)
    {
        string appPoolPath = "IIS://localhost/W3SVC/AppPools/" + appPoolId;
        var appPoolEntry = new DirectoryEntry(appPoolPath);
        appPoolEntry.Invoke("Recycle");
    }

    public static void RecycleApplicationPool(string appPoolId, string username, string password)
    {
        string appPoolPath = "IIS://localhost/W3SVC/AppPools/" + appPoolId;
        var appPoolEntry = new DirectoryEntry(appPoolPath, username, password);
        appPoolEntry.Invoke("Recycle");
    }

}

重写的方法是为了满足您希望显式传递在承载IIS实例的计算机/服务器上具有管理员权限的用户的实例

控制器的动作可以是：

 public string ResetAppPool()
    {
        var appPoolId = IisManager.GetCurrentApplicationPoolId();
        if (appPoolId.Equals(string.Empty))
            return "Application is not running inside an App Pool"; //May be not IIS 6 onwards
        try
        {
            IisManager.RecycleApplicationPool(appPoolId); //Can only be used by Admin users
            return string.Format("App pool {0} recycled successfully", appPoolId);
        }
        catch (Exception ex)
        {
            Logger.Error("Failed to recycle app pool : " + ex.StackTrace);
            return string.Format("App pool {0} recycle failed", appPoolId);
        }
    }

---

我们做了类似的事情，最终决定：

 public string ResetAppPool()
    {
        var appPoolId = IisManager.GetCurrentApplicationPoolId();
        if (appPoolId.Equals(string.Empty))
            return "Application is not running inside an App Pool"; //May be not IIS 6 onwards
        try
        {
            IisManager.RecycleApplicationPool(appPoolId); //Can only be used by Admin users
            return string.Format("App pool {0} recycled successfully", appPoolId);
        }
        catch (Exception ex)
        {
            Logger.Error("Failed to recycle app pool : " + ex.StackTrace);
            return string.Format("App pool {0} recycle failed", appPoolId);
        }
    }