Alternative to Application.DoEvents in console application to make Forms.WebBrowser load javascripts - webbrowser-control

Question

I'm using System.Windows.Forms.WebBrowser in console application to render a web page then invoke scripts on it. To render the web page, I use Application.DoEvents to load and execute scripts.
However sometime the app hangs on calling Application.DoEvents. I found no reason. I don't think I'm creating deadlock on the event loop.
Many people on the web says that one should not use Application.DoEvents at all because it creates more problems than it solves. So I'm thinking there must be an alternative to it. But I've searched a lot and find no alternative to Application.DoEvents.
Does anyone know one?
Any information is appreciated. Thank you in advance!
Thanks to Noseratio's help, I finished drafting my code but still there's freezing issue.
Take following code as example(code is too long so I pasted it on pastebin): http://pastebin.com/DkDcrirU
When you run this code, occasionally there will be at least one window fail to close. And if you attach to the frozen process, you will find the code stuck at following line(indicated by ">>>"):
public static bool NavigateLoadAndRender(WebBrowserContext browserContext, string url, TimeSpan loadTimeout, TimeSpan renderTime, out string errMsg)
{
ForceInitActiveXInstance(browserContext);
object axi = null;
Func<Uri> getBrowserUri = null;
Action<Uri> navigateBrowser = null;
Func<IHTMLDocument2> getBrowserDoc = null;
switch (browserContext.WebBrowserType)
{
case WebBrowserTypeEnum.Forms:
{
var browser = browserContext.GetWebBrowserAsFormsType();
getBrowserUri = () => browser.Url;
navigateBrowser = u =>
{
var finished = false;
browserContext.SyncContext.Post(state =>
{
browser.Navigate(u);
finished = true;
}, null);
while (!finished) Thread.Sleep(DefaultConfig_SyncContextPostCheckInterval);
};
getBrowserDoc = () =>
{
IHTMLDocument2 doc = null;
bool finished = false;
browserContext.SyncContext.Post(state =>
{
doc = (IHTMLDocument2)browser.Document.DomDocument;
finished = true;
}, null);
>>> while (!finished) Thread.Sleep(DefaultConfig_SyncContextPostCheckInterval);
return doc;
};
axi = GetActiveXInstance(browserContext);
}
break;
case WebBrowserTypeEnum.Wpf:
{
var browser = browserContext.GetWebBrowserAsWpfType();
axi = GetActiveXInstance(browser);
getBrowserUri = () => browser.Source;
navigateBrowser = u =>
{
var finished = false;
browserContext.SyncContext.Post(state =>
{
browser.Navigate(u);
finished = true;
}, null);
while (!finished) Thread.Sleep(DefaultConfig_SyncContextPostCheckInterval);
};
getBrowserDoc = () =>
{
IHTMLDocument2 doc = null;
bool finished = false;
browserContext.SyncContext.Post(state =>
{
doc = (IHTMLDocument2)browser.Document;
finished = true;
}, null);
while (!finished) Thread.Sleep(DefaultConfig_SyncContextPostCheckInterval);
return doc;
};
axi = GetActiveXInstance(browserContext);
}
break;
default: throw new ArgumentException("unknown browser type", browserContext.WebBrowserType.ToString());
}
var success = NavigateLoadAndRender(
axi, url,
getBrowserUri,
navigateBrowser,
//() => DoEvents(browser),
getBrowserDoc,
loadTimeout, renderTime, out errMsg);
return success;
}
Anyone knows what's happening?