Web浏览器控件vb.net

我有一个使用Webbrowser控件在VS2005中完成的应用程序VB.net.该控件用于模拟聊天类型的窗口，并且不会执行"操作.网页功能类型.我使用此控件是因为我想在聊天环境中显示图形图像(又称表情).我只处理文档正文区域，然后将新数据附加到正文底部.

添加新数据后，我将捕获滚动位置并根据该信息进行操作滚动到文档底部，前提是用户不在滚动文本的中间.长期以来，这一直很好.但是，由于Microsoft已开始发布IE8作为必需的更新，并且人们正在自动下载并安装它，所以它破坏了我的应用程序.而不是滚动到底部，而是滚动到顶部(无论出于何种原因).

我已经在其他msdn论坛和新闻组中发表了几篇文章，但尚未获得解决此问题的答案.

我该怎么解决?网点方使用用户安装的IE版本，而不是将浏览器控件保留在网点本身内...我正在失去客户，并且有大量的愤怒的人.在这一点上，我只能告诉他们是要卸载IE8，并且显然也有很大的问题. * sigh *

I have an application done in VS2005, VB.net, that uses the webbrowser control.  The control is used to emulate a chat-type window, and does not "do" web page types of functionality.  I use this control because I want to display graphics images (aka emotes) within the chat environment.  I deal only in the document body area, and I append new data coming in to the bottom of the body.

As new data is appended, I capture the scroll positions and based on that information, I will scroll to the bottom of the document, providing the user is not in the middle of scrolling through the text.  This has worked very well for a long time.  However since Microsoft has started to issue IE8 as a required update, and folks are auto-downloading and installing it, it is breaking my application.  Instead of scrolling to the bottom, it scrolls to the top (for whatever reason).

I have made several posts in other msdn forums and newsgroups and have yet to get an answer on how to fix this situation.

What can I do to solve this?  The dot net side uses the version of IE the user has installed rather than keeping a browser control within dot Net itself...  I am losing customers, and have a huge number of irate people.  At this point all I can tell them is to uninstall IE8, and apparently that too has huge issues.  *sigh*