CoreWebView2NavigationStartingEventArgs.Cancel not working

[ukandrewc]

Description
Navigation not cancelled (I'm fairly sure it did on previous releases)
Version
SDK: 1.0.674-prerelease
Runtime: 88.0.673.0 (Official build) dev (32-bit)
Framework: WinForms
OS: Win7 32 bit SP1

Repro Steps

Private Sub WVBrowser_NavigationStarting(sender As Object, e As CoreWebView2NavigationStartingEventArgs) Handles 
  Me.NavigationStarting
  e.Cancel = True ' Doesn't cancel

AB#29899723

[champnic]

Yes this is a known issue with 1.0.674-prerelease that we have a fix for. It will be available in the next SDK. Thanks!

[pagoe-msft]

Hi Everyone,

This was addressed in the 1.0.664.37 version.

[dmcgloin]

@champnic @pagoe-msft I'm trying 1.0.707-prerelease, and this issue does not appear fixed for me. Triple-checking my code but when I try to cancel at the NavigationStarted event, the browser strill proceeds to the bogus redirect URL instead of stopping the load.

Side note: 1 out of 5 times, my first page does not render correctly. It's just a grey page. When I resize the parent window (and thus the WPF browser control) it redraws correctly. This is new behavior when compared to previous release. I'll open a separate issue

[ukandrewc]

e.Cancel works for me on 1.0.707.0 Winforms.

[champnic]

@dmcgloin Could you see if cancelling a navigation works with something simple? I think we have a bug or two where cancellation in particular fails in certain scenarios, like malformed URLs, etc.

[fsuk]

Does not work for me in WPF even with the simplest example.

[champnic]

@fsuk Could you add some details about your simple example - SDK/runtime versions, code, etc?

I just tried in a WPF app with 1.0.721-prerelease SDK, and when I do e.Cancel = true; during the NavigationStarting event, it cancels the navigation.

[Nevcairiel]

I'm also experiencing issues with Cancel on 1.0.774.44 or 1.0.824-prerelease

The website is using a JS .click() on a "a href" element, and i'm trying to suppress that navigation event. The target URL requires authentication, so WebView2 pops up the credentials box, and the request is not silently canceled.

I'm using the C++ Win32 interface.

It seems like the cancel is working sometimes, as if there is a timing component due to the authentication.

[champnic]

@Nevcairiel This sounds like a separate issue. Can you please open it in a new issue to track? Thanks!

[kha1ne]

Hello @champnic

Issue we are experiencing is on redirect request, we are getting only one occurrence of ICoreWebView2NavigationCompletedEvent in which source URI contains the redirect URI.

So, can this be connected with the above, and if so, is this solved already in newer runtime versions?

While we are at it, is there any way that we can download older fixed version of runtime 92.xx?

[champnic]

@kha1ne Hey Marko - that also sounds like a separate thing. Could you open a new issue with relevant details, such as your current runtime and SDK version?

No - we only provide the latest and previous fixed version runtime.

[anovik]

@champnic It seems there is still a problem with Cancel CoreWebView2NavigationStartingEventArgs for WinUI3 in Microsoft.WindowsAppSdk 1.0.0, could you please check?

[champnic]

@anovik Hey Anna - would you mind opening that as a new issue with more details on what the issue is and how to reproduce it? Thanks!

[anovik]

@champnic I've opened #2072