I want to automate the Internet Explorer using C#. Thus I've written simple Console Application, that creates a new instance of InternetExplorer and then registers on some events.
Following Events work fine: OnQuit
, BeforeNavigate2
and NewWindow2
But NewWindow3
does not. Everything compiles and the program can be started, but following exception is thrown when you make a link open in another window: Eine Ausnahme (erste Chance) des Typs "System.ArgumentException" ist in mscorlib.dll aufgetreten.
So what am I doing wrong with that event? I've exactly used the parameters specified in DWebBrowserEvents2_NewWindow3EventHandler
edit: As this seems to be a bug in the Library, is there a possibility to create your own EventHandler Method/Callback stuff? I did some research and have found this page: How do I add an event listener using MSHTML's addEventListener in IE9? Where someone creates a COM-Class with a callback method.
=> How can I extend the InternetExplorer class so that I can access the NewWindow3EventHanlder?
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using SHDocVw;
using MSHTML;
using Microsoft.VisualBasic;
namespace BrowserControl
{
class Program
{
private ManualResetEvent closed;
private InternetExplorer ie;
public Program()
{
closed = new ManualResetEvent(false);
}
private void setupIE(InternetExplorer ie = null)
{
if (ie == null)
{
this.ie = ie = new InternetExplorer();
Console.WriteLine(Information.TypeName(ie)+" "+Information.TypeName(ie.Application));
}
ie.NewWindow3 += new DWebBrowserEvents2_NewWindow3EventHandler(NewWindow3);
ie.NewWindow2 += new DWebBrowserEvents2_NewWindow2EventHandler(NewWindow2);
ie.BeforeNavigate2 += BeforeNavigate2;
ie.OnQuit += OnQuit;
ie.Visible = true;
}
public void NewWindow2(ref object ppDisp, ref bool Cancel)
{
Console.WriteLine("new window 2");
}
public void NewWindow3(ref object ppDisp, ref bool Cancel, uint dwFlags, string bstrUrlContext, string bstrUrl)
{
Console.WriteLine("new window 3");
}
public void BeforeNavigate2(object pDisp, ref object URL, ref object Flags, ref object TargetFrameName, ref object PostData, ref object Headers, ref bool Cancel)
{
IWebBrowser2 cie = (IWebBrowser2)pDisp;
Console.WriteLine(cie.LocationURL + " navigates to " + URL + " target=" + TargetFrameName + " ...");
}
public void OnQuit()
{
Console.WriteLine("quit");
closed.Set();
}
static void Main(string[] args)
{
Program p = new Program();
Console.WriteLine("Starting Browser ...");
p.setupIE();
Console.WriteLine("Up And Running!");
p.closed.WaitOne();
Console.WriteLine("Shutting down ...");
System.Threading.Thread.Sleep(2000);
}
}
}