Switched the WPF application to use WebView2 instead of WebBrowser control in order to have a modern browser embedded in the app.
All works fine only in case the application has rights to create files/folders in its own working directory, otherwise the WebView2 browser is not shown. When I run the application as admin, all works fine - files/folders are created, embedded browser is shown in the application and works properly. But even after that, if I run the application without admin rights (but the files/folders are already there), browser is still not shown, until I rerun the app with appropriate rights.
Is the situation with WebView2 really as bad as it looks or am I missing anything here and there is a way to make it work without write permissions?
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We're making a new application using WPF .Net Core. To use the auto update function we decided to pack it with the MSIX Packaging Tool as a UWP App in VS2019. I was able to host the appinstaller File on an IIS and to Install the App over a link to that file over the web. Auto updating is also working fine.
Now to the problem:
When I run the installed App it's icon is not showing in the task bar but it is shown in the Task-Manager using a lot of cpu. In the Process Monitor it shows that the App tries to access its dependencies (like PresentationFramework.dll) but is not successful as the result is always "File locked with only readers". The DLL itself is present in the WindowsApps/xxx/ Path. Also I can not start the EXE manually as my user do not have the rights. What am I missing here?
Edit: Also I realized now that my app is only starting as a background process in the task manager and not as an app. When I go to the app directory under WindowsApps/xxx/MyApp I can not start the EXE directly because of no rights as mentioned before. But when I copy the whole folder I can start the EXE, the GUI appears and the app is an app again in the task manager.
We found an answer. As the GUI is a WPF .Net Core Project and we make the setup with a Windows Application Packaging Project to generate a UWP App from it the technology used seems to be the so called Desktop Bridge.
In the process monitor it seems that it tries to access the files under the correct path but somehow it does it not in the right way as long as the application path is not set correctly in the WPF Projects App.xaml.cs.
To fix this use the solution from Andrew Leader
We are trying to integrate Silverlight components in Outlook task panel which is developed by Outlook Javascript API. However when mailapp(task panel) loaded, it appears error and it prompts the Silverlight addin failed to run and please check security settings in “Internet Options”. I also tried adding website URL into IE trusted sites list, but this error remains. But I also notice that it works fine in IE browsers.
I know the mailapp (task panel) initials a web browser (IE kernel) in embedded mode. But I really want to confirm whether Silverlight is supported or NOT in MailApp？ If it's supported, how should I do?
Anyone gives me the right answer will save my life. Thanks in advance.
It prompts security settings conflicted in MailApp
But it works fine in a separate IE browser
I have developed a WPF application and deployed it using Click Once Deployment. I installed it on another pc it works fine but the problem is that the application's root folder is being created in a temporary folder in app data/local. I want to give user the flexibility of installing the software wherever he/she wants. How do I do this?
You simply can't change the installation folder using ClickOnce. If you want to do this you need to choose a different installer technology.
ClickOnce application require no administrative privileges and are always installed per user in the user application cache.
We have a requirement to start a WPF application with specific parameters from a link in a browser.
We are wondering if this is possible?
As an alternative could we embed the web application in a WPF browser control, and read the values out of the html web page?
Several possibilities :
if you control the browser (i.e. if you are in an intranet scenario, and have the opportunity to deploy applications), you can :
create an activex or plugin that runs the application
register a new uri scheme to interpret the url of kind "yourapplication://yourarguments"
(complex): deploy a listening app ran under the user session, and from the webapplication, ask this listening app to run the target application
reduce the security of the browser (not recommended)
if you don't control the browser:
create a clickonce application... this involves a setup, but which does not require admin privilege
Moving to Silverlight also might be an option, depending on your needs. SilverLigth V5 (still in beta) notably adds the ability for an admin to control the rights of the application via a GPO
Note: My feelings is the later option (Silverlight) is far more preferable because it's a lot more cleaner and less security hole factor. However, it can only be done if your requirements fits into the SL features
It is not possible to call client app from a browser, previously it was possible from activex controls but for that you need to have a signed library, in wpf you can make browser based application but you cant embed your web app in it.
So partially you are correct if you used wpf app you will be able to launch application on client side but with browser it seems difficult until unless you make activex control
but still i am not 100% sure that with activex control you will be able to launch the app or not
I just lost 5 hours looking for a answer which i haven't been able to find :p
First, I'd like to force a trusted application (i need to access the file system) to display into the browser. Based on what i found on google a trusted application must be installed and launched as a desktop application (also called out-of-browser application).
So, i want to have an installed application on the client side but meanwhile, the user must also be able to start this same application into a browser window when he goes on my web site. Is this possible ?
Second, I'd like to give to the user the possibility to start the application from the browser. To be clear, the application is installed on the client computer but i want a button on my web site which starts the desktop application. How can i do that ?
Thanks
The answers are sort of and no.
Yes you can run an application that has been installed on the client also in the browser. However, not all of the installed application features will be available. Anything that requires elevated trust will not work inside the browser.
No you can't launch the installed application programmatically from within code running in the browser. The best you can do is display a polite message to the user to the effect that they have this app already installed and in order to access all of its feature they will need to launch it.
Yes, it is possbile since Silverlight 5, see my answer on silverlight-4-elevated-permission-inside-the-browser