I've written a WinForms app to open a webbrowser control, and we use this to fill in a form to submit training course events programmatically from a database (it's not perfect, but it saves a lot of time - and no, the company concerned doesn't support XML feeds). However, the system has just started generating script errors, which prevent it working.
I've tried setting:
WebBrowser1.ScriptErrorsSuppressed = True
but this is only partly successful. The good news is that I don't get any script errors, but the bad news is that I can't then log on to the site.
Has anyone got any suggestions? As far as I'm aware the webbrowser control uses IE, so I can't get it to use another browser instead.
Thanks in advance!
According to the documentation http://msdn.microsoft.com/en-us/library/system.windows.forms.webbrowser.scripterrorssuppressed.aspx if you suppress the errors you also suppress dialog boxes. Meaning Alert Boxes/Authentication used to login will also be suppressed.
Below is what is noted in the documentation:
When ScriptErrorsSuppressed is set to true, the WebBrowser control hides all its dialog boxes that originate from the underlying ActiveX control, not just script errors. Occasionally you might need to suppress script errors while displaying dialog boxes such as those used for browser security settings and user login. In this case, set ScriptErrorsSuppressed to false and suppress script errors in a handler for the HtmlWindow.Error event.
As the documentation states, you can handle the HtmlWindow.Error event to allow dialog boxes, but only suppress scripting errors. (Although, I have been having issues with this actually working correctly.)
Related
I have a problem where I am opening a set of html files found on the local computer which use ActiveX controls.
The constant notification popup is frustrating as every page it appears.
I cannot change the file as it is generated by an external application and I do not want enable ActiveX controls for IE in general.
What I would like to do is allow my webbrowser control, embedded in a WPF window, to allow blocked content automatically if it is from the local computer (or at the very least any blocked content as I can control what my webbrowser control can and cannot open)
I cannot see any obvious way of doing this, there are no options to allow blocked content and no event for identifying when blocked contetn has been foud.
Is there any way to achieve this?
Thanks
EDIT -
There have been plenty of views for this question but not a single comment. I will welcome any suggestions, perhaps even an alternative control, I realise the default WebBrowser is not ideal. Are there any other browsers that do offer this feature?
To add a little detail to the problem I think I should explain the requirements some more:
The resource being displayed is a set of html files that are generated as a report by a legacy tool that cannot be changed.
The tool I have built will allow the user to define the destination for the report and then allow them to browse it using an embedded browser.
I really just need a control that will render html and ActiveX controls as a browser would but without any interference from internet security settings.
UPDATE - Unfortunately I am no longer working on this project, however I am interested in the problem/fix so I shal try and replicate it in my spare time.
I have also renamed the question as I realise the problem I am dealing with specifically is ActiveX content, which may have a solution (see answer from Rajesh) which is specific to this type of content.
You need to add the file location to your trusted sites. This is possible either with a webserver running on your local machine or if the folder where they are located is a shared folder.
In IE, go to Internet Options > Security, select "Trusted Sites" and click the "Sites" button. Enter the location (i.e. file:\server-Hostname\Sharedfolder* for a shared folder) and click "add" (make sure that the "Require server verification (https:)..." option is unchecked).
There is a lot more information available if you search "Add local file to trusted sites" on the web. I do seem to recall adding a local file location without having to share the folder, but at the moment I don't remember how I did it.
Simply add this line to your html page at the start before the html tag.
< saved from url=(0023)http://www.contoso.com/
and then select and comment it.
I've been working on a SL5 app for a few days. I've mostly been using a hard coded dummy data collection when styling my app's view. Everything has been working fine, but now I want to connect it to a dynamic data collection generated by my view model (using the data service technique where you have design time & real data depending on the IsInDesignTool property.
After I cleared out the control of the hard coded data and bound it to a collection in my view model. When I run it in debug mode, I see an unhandled exception being thrown in App.xaml.cs. The exception args don't say exactly what the problem is (it is simply saying "Value does not fall within the expected range" but when I look at the sender I find the following coming from the MainWindow (my app only has a single view): "Out-of-browser specific settings do not affect in-browser applications."
Further, when I try to view the MainWindow in the designer in VS, it doesn't render and instead shows an error (the rendered exception in the designer doesn't have any of my namespaces in it, just things about controls & UIElements).
I'm at a bit of a loss how to troubleshoot this. I didn't set anything for out-of-browser when building the app and since it worked with dummy data collections, why would it suddenly have this issue (seems like if I was using an out-of-browser property it would have shown up before I bound the data to the view).
Tips/pointers?
(sorry for my bad english)
I am not sure on what is happening but I saw the error "Out-of-browser specific..." when I tried to access some specific property only available to OOB while running on browser. The solution was to test if running oob before using the property:
if (Application.Current.IsRunningOutOfBrowser)
{
Application.Current.MainWindow.WindowState = WindowState.Maximized;
}
The other problem possibly is unrelated - and sometimes can be really hard to debug - one thing that helped me is to open another instance of VS and attach it to the one where you are seeing the problem. With this setup, go to your problematic View and change to "design view" - keep an eye on the Output window of the attached VS to see if some meaningful exception is shown.
I had a similar issue.
I did put a Textbox inside kind of Listbox (radPanelBar) and added
HorizontalScrollBarVisibility="Auto" to the Textbox. It seems that the textbox had problems when to show the scrollbar and when not. Adding
ScrollViewer.HorizontalScrollBarVisibility="Disabled" to the Listbox did solve it ( so, no OOB issue at all ).
I'm not entirely sure what the error was, but it wasn't at all realted to OOB. I'm using a data service approach (in design time I programatically build real data, not the Expression Blend sample data, but when not in a design tool, it uses the REST services). I started disabling a lot of things in my dynamic data and slowly added them back. Somewhere along the way my dummy data generation was fouling things up, but SL thought it was an OOB issue.
A WinForms program will inevitably send notification to user. There are two types of notifications:
Important: user needs to take action on it
Non-Important: kind of like "there is something going on, and you might want to pay attention".
It's pretty common that MessageBox is used for both of the two types. But recently I found MessageBox is kind of annoying: it steals user's focus and user has to click to dismiss it. I want to know what's the alternatives for MessageBox and their pros/cons?
To start, here is some idea:
Statusbar: not easy to display lengthy notification
taskbar notification: does people think it's evil since most internet ads popup use that approach?
floating statusbar: Chrome/IE9/Evernote use similar floating statusbar, which is hidden when there is no link address or no message.
Chrome UI: Infobar and Status Bubble
IE9: Notification bar
We implemented a mechanism similar to taskbar notification, but placed in some coordinates inside a WinForms control.
This has some advantages:
You have some context about where (location) the notification is shown and why.
It is non modal, so it not blocks the GUI.
It's easy to implement using a owned form without border.
You can place it wherever you want.
You can show a link label with a short explanation and show help, other dialos, or link some actions if the user needs further explanation. The user experience is improved.
But I recommend using notifications only for informative messages.
You must take into account some tips about the messagebox:
It's the standard way to show information to the user.
It should be user to notify an error message or a warning. The messagebox ensures that the user, at least, clicked ok. So the user is aware that something happens. Yes, maybe he didn't read the message, but at lease he saw an error or warning.
It is possible that the user ignores other reporting mechanisms.
Hope it helps.
I have been working on a C# WinForms solution using the WebBrowser control on a form.
At this time it has three modes: Prompt; Countdown Prompt; Countdown Timer and Combo(box) prompt.
Using the webbrowser control allows HTML to be used which gives you free selection of Fonts; Colors and sizes.
I'd share what I have if I only knew how to share a solution instead of a code snippet.
What I've got works and has two parts, the designer and the prompt itself.
If an admin will contact me I can provide a download link and they can review to see what they think.
I have a certain UI element, which when clicked should navigate to another URL.
I tried handling the mouse down event and execute something like this:
System.Windows.Browser.HtmlPage.Window.Navigate(new Uri("http://google.com"), "_blank");
However, this gets blocked by the browser (I tried both Chrome and Firefox) unless I disable the popup blocker.
I did some research and it seems that the browser blocks navigations that don't occur as a result of user interaction and as far as the browser is concerned this navigation is initiated by a plugin (Silverlight), not a user.
OK, makes sense. But then I tried using a HyperlinkButton instead and it was NOT blocked.
I wonder why these two approaches get different treatment from the browser. Any idea?
I actually worked around the problem by wrapping the navigation triggering UI with a HyperLinkButton, but I'm still very curious...
I'm going to pull a fancy corporate quote and say "It is a feature, not a bug."
The Silverlight team is obviously worried about Security. They don't want crazy haxorz like you and I to do crazy things with our apps--you know, like popping up a bunch of browser windows all routing people to Zombo.com. Just imagine the choir! Zombo!
Summarized from their documentation: They want us to only use the HyperlinkButton to go outside of their application. In fact, they went the extra step, and depending on our settings, they will even throw a SecurityException for us if we navigate to an outside page--Even from a HyperlinkButton. How nice.
The real question: Why the Hyperlink Button and not something else?
Only one "thing" can navigate. this take saves time for Microsoft while testing Silverlight. This one thing can navigate to both internal XAML pages and external web pages--Might as well be consistent and have only one way to do navigation.
It is a UIElement. It's code behind likes to run in the primary visual thread. It can promise the browser that a Visual Element wants to go somewhere. Microsoft can also put its limiting logic in a control that requires a mouse-click/keyboard-input event tree.
All in all, it makes sense to start simple by making a control do the work.
Fun stuff! Hope this helps you.
It seems that due to ActiveX that Firefox can't display the print icon/button on the Report Viewer control in SQL Server Reporting services. Has anybody figured out a way to work around this or gotten this to work?
If it's not possible, does anybody know of a way to add a standard button that would trigger the print behavior on the report viewer control?
As you state, the print functionality is ActiveX, so it will not work in Firefox.
You could place a button in the "msrs-buttonHeaderBackground" div using a javascript button.
I found the div using the firebug firefox extension - it's great.
You could possibly find the other divs you'd like to hide and put them in a print style sheet, so they don't show up when going to print.
http://www.456bereastreet.com/archive/200709/how_to_create_an_unobtrusive_print_this_page_link_with_javascript/
I agree with the author that ctrl-p could simply be pressed for a similar result instead of adding a button - but the print style would still help in that.
You know what...I just realized something. You will not be able to print a page that is more than one page! Ouch.
I know this is a very old questions, but we came across this and chose the following solution.
We downloaded an IE Tab extension(this is one there are several more) for FireFox and then configured that extension to use IE to render the report server URL by default.
You could easily create a how-to web page,pdf, or maybe even create a dummy report that shows the instructions on how to do this to your end users and then you're all set.
So now every time the report server website is accessed it's being rendered in IE so the print button shows up. Every windows machine already has IE so no compatibility issue there, unless you're not using windows. :)
My best suggestion would be from within Firefox export it to PDF and then print it from your PDF viewer. In my experience this is a better way to print the reports anyway.
Hope that helps!