C# Recycle IIS 6's App Pool error

Question

I want to Recycle IIS 6's App Pool in a web app using asp.net c#.

protected void Page_Load(object sender, EventArgs e)
{
    //Recycle IIS 6's App Pool
    Recycle("localhost", "appPool_02");

}

void Recycle(string machine, string appPoolName)
{
    string path = "IIS://" + machine + "/W3SVC/AppPools/" + appPoolName;
    DirectoryEntry w3svc = new DirectoryEntry(path);
    w3svc.Invoke("Recycle", null);
}

"appPool_02" is another app pool name, and the above code is running on "appPool_01".

When I used the code above, it occured an error:

拒绝访问。 (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)) Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.UnauthorizedAccessException: 拒绝访问。 (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))

ASP.NET is not authorized to access the requested resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}\\ASPNET on IIS 5 or Network Service on IIS 6) that is used if the application is not impersonating. If the application is impersonating via , the identity will be the anonymous user (typically IUSR_MACHINENAME) or the authenticated request user.

To grant ASP.NET access to a file, right-click the file in Explorer, choose "Properties" and select the Security tab. Click "Add" to add the appropriate user or group. Highlight the ASP.NET account, and check the boxes for the desired access.

Source Error:

Line 72:         string path = "IIS://" + machine + "/W3SVC/AppPools/" + appPoolName;
Line 73:         DirectoryEntry w3svc = new DirectoryEntry(path);
Line 74:         w3svc.Invoke("Recycle", null);
Line 75:     }
Line 76: 

Source File: e:\\iProject\\iProgress\\iProgress\\T\\T.aspx.cs Line: 74

Stack Trace:

[UnauthorizedAccessException: 拒绝访问。 (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))]

[TargetInvocationException: Exception has been thrown by the target of an invocation.] System.DirectoryServices.DirectoryEntry.Invoke(String methodName, Object[] args) +238 WE_T.Recycle(String machine, String appPoolName) in e:\\iProject\\iProgress\\iProgress\\T\\T.aspx.cs:74 WE_T.Page_Load(Object sender, EventArgs e) in e:\\iProject\\iProgress\\iProgress\\T\\T.aspx.cs:38 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35 System.Web.UI.Control.OnLoad(EventArgs e) +99 System.Web.UI.Control.LoadRecursive() +50 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627

Answer 1

Your initial post had a space after "localhost" in the machine name. What happens if you remove this?

Also, you'll need to make sure that the ASP.NET user process where this code runs has the appropriate privileges to restart other app pools. You can either use impersonation to do this (bad) or follow the directions in the exception to allow the user process appropriate rights to the other app. pool.

Answer 2

I got it working by setting the AppPool as working as "Local System". But this may cause some security issue. Is there any better solution?

Text to Speech in ASP.NET - Access is denied... what to do?

Answer 3

Exception throw because the user who run the application has no Administrator rights

Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)

If you want to do this you need to give administrator privileg for the user or create a separated App which monitoring the status of your app and recycle when needed.