public void CloseHtml()
{
this.hostControl.Resize -= new EventHandler(this.HostControl_Resize);
try
{
if (this.propertyNotifySinkCookie != null)
{
this.propertyNotifySinkCookie.Disconnect();
this.propertyNotifySinkCookie = null;
}
if (this.document != null)
{
this.documentView = null;
this.document = null;
this.commandTarget = null;
this.activeObject = null;
if (adviseSinkCookie != 0)
{
this.oleObject.Unadvise(adviseSinkCookie);
this.adviseSinkCookie = 0;
}
this.oleObject.Close(NativeMethods.OLECLOSE_NOSAVE);
this.oleObject.SetClientSite(null);
this.oleObject = null;
}
}
catch (Exception exception)
{
Debug.Fail(exception.ToString());
}
}
public void CreateHtml()
{
Debug.Assert(this.document == null, "Must call CloseHtml before recreating.");
bool created = false;
try
{
// create the trident instance
this.document = (NativeMethods.IHTMLDocument2) new NativeMethods.HTMLDocument();
this.oleObject = (NativeMethods.IOleObject) this.document;
// hand it our NativeMethods.IOleClientSite implementation
this.oleObject.SetClientSite((NativeMethods.IOleClientSite)this);
created = true;
this.propertyNotifySinkCookie = new NativeMethods.ConnectionPointCookie(this.document, this, typeof(NativeMethods.IPropertyNotifySink), false);
this.oleObject.Advise((NativeMethods.IAdviseSink)this, out adviseSinkCookie);
Debug.Assert(adviseSinkCookie != 0);
this.commandTarget = (NativeMethods.IOleCommandTarget) this.document;
}
finally
{
if (created == false)
{
this.document = null;
this.oleObject = null;
this.commandTarget = null;
}
}
}
