问题
I'm developing an Internet Explorer command button that will open a specific web page once clicked. Here's a snippet of code (IEApp is a reference to an instance of IE.WebBrowser):
IEApp.Navigate(sURL, ref one, ref two, ref three, ref four);
The above line throws the following COMException:
Exception Source: Interop.SHDocVw
Exception Type: System.Runtime.InteropServices.COMException
Exception Message: The requested resource is in use. (Exception from HRESULT: 0x800700AA)
Exception Target Site: Navigate
This wasn't a problem on IE6 or IE7. Any ideas on what's going wrong? I'm using AddInExpress for creating the command button.
Cheers! Christian
回答1:
That's ERROR_BUSY usually happens when IE is doing something else, e.g. displaying a window.alert message box.
Try suppress script errors and Implement IDocHostShowUI and return S_OK without blocking the message pump
回答2:
could this help: turning off UAC in Windows, if you are using a server kind version:
screen-shoots here: http://blog.vincentbrouillet.com/post/2011/02/10/watin%3A-The-requested-resource-is-in-use
I had this error, and it was quite random. I tried killing IE before running the tests. It kind of work, but not all the time.
来源：https://stackoverflow.com/questions/2230982/webbrowser-navigate-throws-comexception