asp.net 删除项目文件/文件夹IIS重启，Session丢失问

/// <summary>
/// Ss the ASP.NET AppDomain being restarted (which clears
/// Session state, Cache etc.) whenever a folder is deleted.
/// </summary>
public class SAppDomainRestartOnFolderDeleteModule : IHttpModule
{
private static bool DisableFCNs = false;
public void Init(HttpApplication context)
{
if (DisableFCNs) return;
PropertyInfo p = typeof(HttpRuntime).GetProperty("FileChangesMonitor", BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static);
object o = p.GetValue(null, null);
FieldInfo f = o.GetType().GetField("_dirMonSubdirs", BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.IgnoreCase);
object monitor = f.GetValue(o);
MethodInfo m = monitor.GetType().GetMethod("SMonitoring", BindingFlags.Instance | BindingFlags.NonPublic);
m.Invoke(monitor, new object[] { });
DisableFCNs = true;
}
public void Dispose() { }
}

<!--解决删除项目文件/文件夹引起的IIS重启-->
<add name="sAppDomainRestartOnFolderDelete" type="DeployAssistant.Facade.Web.SAppDomainRestartOnFolderDeleteModule,DeployAssistant.Facade"/>