How to suppress run-time script errors as a WebBrowser control host in a Visual Basic application

To suppress the default Internet Explorer error message for the window onerror event, you can set the returnValue property of the event object to True.

To set the returnValue property to True, perform the following steps:

1. Create a new Visual Basic standard EXE project. Form1 is created by default.
2. Add a WebBrowser control to Form1.
3. Add a Project Reference to the Microsoft HTML Object Library (Mshtml.tlb).
4. In the declarations section of Form1, add the following code:

   Dim WithEvents objDoc As MSHTML.HTMLDocument
   Dim WithEvents objWind As MSHTML.HTMLWindow2
   Dim objEvent As CEventObj
   					

5. In the WebBrowser1_NavigateComplete event, add the following code:

   Private Sub WebBrowser1_NavigateComplete()
   
       Set objDoc = WebBrowser1.Document
       Set objWind = objDoc.parentWindow
       
   End Sub

6. Add an event handler for the window onerror event as follows:

   Private Sub objWind_onerror(ByVal description As String, ByVal URL As String, ByVal line As Long)
      
      
       Set objEvent = objWind.event
       objEvent.returnValue = True
       MsgBox (description)
    
    
   End Sub

Note This method will not trap compilation errors. In addition, this method only suppresses the error message when you turn off the Scripting Debugger in Internet Explorer. By design, if the Scripting Debugger is turned on, the error is not suppressed. To turn off the Scripting Debugger in Internet Explorer, on the Tools menu, click Internet Options. On the Advanced tab, select the Disable script debugging check box, and then click OK.

For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base: �For more information on�handling and avoiding web page errors�, see the following article on the Microsoft Developer Network (MSDN):� For more information regarding the onerror event, see the following MSDN Web site: For more information about developing Web-based solutions for Microsoft Internet Explorer, visit the following Microsoft Web sites: