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Is there a way to disable Browser notifications in WebView2

Im building a WPF app and i'm trying to check several URL's in the background within a WebView2 window
Altough some urls have popups (which aren't real popups) in the upper left corner like asking for permission to use e.g. the microphone or something.
These popups are getting displayed in full size even if the visibility of the 1x1 pixel big webview is hidden
Here is an example of such a popup in my app:
The black corner is the edge of the app and as you can see the meet.google.com popup is displayed in full size even if the webview is invisible
I already tried to disable the notifications with the new window requested event but this doesn't work because it isn't a new window and it doesn't have a URL or anything.
I also tested many CoreWebView2 settings which made sense,like before no useful results
Does somebody know if there is a setting or something which i have to enable/disable in WebView2 to disable these notifications?
If any further information is required please ask me!

You need to look at the Permissions Requested event for mic and camera.
async private void InitializeWebView2()
{
await webView21.EnsureCoreWebView2Async();
webView21.CoreWebView2.PermissionRequested += CoreWebView2_PermissionRequested;
}
private void CoreWebView2_PermissionRequested(object sender, CoreWebView2PermissionRequestedEventArgs e)
{
Debug.WriteLine(e.PermissionKind.ToString());
e.State = CoreWebView2PermissionState.Allow;
}

Windows Phone 8.1 ManipulationDelta Event

I'm really confused about this Topic. None of the tutorials I found to e.g. move objects around when there's touch input works. For example they all do something like this:
Control.AddHandler(UIElement.ManipulationStartedEvent, new EventHandler
<ManipulationStartedEventArgs>(Control_ManipulationStarted), true);
But there's no ManipulationStartedEventArgs, VS2013 can't find it and there's no way to add a using directive. Are those tutorials old and did MS change the way the ManipulationDelta works?
Adding it with the EventHandler section of the Properties section again doesn't work, no Event is fired no matter what I'm trying to do.

For manipulation to work the UI Element must have ManipulationMode property set to something other than None or System to be a manipulation event source; i.e Set ManipulationMode to TranslateX if you want an event to fire on a horizontal pointer movement.
For UI manipulation in Windows Universal you have 3 events:
ManipulationStarted
ManipulationDelta
ManipulationCompleted
Each with their own EventArgs under System.Windows.Input namespace
ManipulationStartedEventArgs
ManipulationDeltaEventArgs
ManipulationCompletedEventArgs
The problem may however be the type of UI Element that you are using, not all accept/generate manipulation events.
Examples of UI Elements that don't:
WebView
(I expect Canvas but not sure, haven't tested)
Examples of UI Elements that do:
Textblock
ListView

c# - How to access a variable from outside its class in a method in some other class?

I am a beginner in c# programming and I am developing windows phone application after reading some tutorials.
My idea is when the user clicks a button in a windows page, some other button in other windows phone page must change color from red to green.
Pardon me if I am too Basic.
This I have defined in a page named "IndexPage.xaml"
<Button x:Name="One_green"
Content="1"
Background="Green"
Click="One_Click"
/>
<Button x:Name="One_red"
Content="1"
Background="Red"
Click="One_Click"
/>
Now I see red color button in my window as green button is hidden in the back.
Now, the following code is from another windows phone page "1.xaml"
<Button Content="GO" Click="Button_Click"/>
Now when the user clicks the "GO" Button I want the button to change to red to green in "IndexPage.xaml". So I tried a code something like this in "1.xaml.cs"
private void Button_Click(object sender, RoutedEventArgs e)
{
One_red.Visibility = Visibility.Collapsed;
One_green.Visibility = Visibility.Visible;
}
But I am not able to access the "One_red" or "One_green" button in the above code. Please shed me directions.
Also I want that code to execute only once. (i.e.) when the IndexPage.xaml loads again I want that button to be green always.
Thank you very much in advance.
Please tell me if some other details are required.

You could define a public or internal static variable inside the "Index.xaml" class specifying what button will show on load until otherwise specified. This variable could be accessed outside the class, and possibly even outside the project depending on the modifier chosen. The constructor of the "Index.xaml" class could have code to reset it to the default to ensure it only happens on the next creation of the page. If you aren't creating a new page everytime, you would have to put the default resetters in a method called when you want to bring it to foreground.

It seems to me that you are trying to learn, rather than having a SPEC to follow and implement.
Because of that, and because you are starting with C# in 2014 (almost 2015),
it will be quite beneficial for you to jump straight to data-binding declarative over imperative, going MVVM (MVVx) over MVC (MVx).
XAML was designed around this pattern. It's the natural way of doing things in XAML, a perfect fit and the perfect platform to learn the pattern.
It requires lots of learning, thinking, and re-learning, but it will open your eyes to modern programming techniques.
That said... there are too many ways of doing what you asked for, and while none are exactly wrong, there are 2 current trends in .Net/C#/MsTech which IMO are NOT a waste of your time:
Functional Reactive Programming and OOP/MVVx (the x is for whatever).
Examples are ReactiveUI, Reactive Extensions, PRISM, Caliburn.Micro and many more. They can be combined, the same way you can combine traditional event-driven/event callbacks with MVVM and/or Reactive Programming. However, I would advise against it.
I'll start with the most documented way.
Look at Data binding for Windows Phone 8. It was the first result when I googled "windows phone 8 xaml data binding," and deals with Colors and controls.
If you follow that example and add a resource to your application, you are done.
Of course, you can still use event => onClick + static class to hold the value in between View instances, but if I was right on the assumption that you are trying to learn, I wouldn't go that route.
Sorry if I drifted. :)

You may not be able to access the button click event because it is private, you may need to make it protected or public, the default access specifier would probably be ok as well.
public void Button_Click(object sender, RoutedEventArgs e)
or default would be:
void Button_Click(object sender, RoutedEventArgs e)

Functions like Focus() and properties like Focusable not available for silverlight, only .NET?

Short version: Solutions like the following: How Do I Give a Textbox Focus in Silverlight?
Don't seem to work because functions like Focus and properties like Focusable DON'T EXIST for silverlight and only exist for .net apparently.
Background/Long Version: So I've been trying to get my XNA game to work on silverlight. Porting it was a nightmare but I managed to do it somehow. Currently I want to use ViewBox's so my game is as big as a players browser instead of a set size. When I tried to do it, it VISUALLY worked, but it was impossible to send any keyboard commands to the game. I'm pretty sure its preventing me from focusing it. When I google how to give focus, it gives me links like these where people are saying to use functions like .focus() which DON'T EXIST on silverlight 5 only .NET apparently. For example go here: http://msdn.microsoft.com/en-us/library/system.windows.controls.control(v=vs.110).aspx
It shows the .NET 4.5 version. If you change it to silverlight at the top, all the nice functions and settings disappear. Am I missing something here? How do I access the .Net versions of these classes in silverlight? If its not possible why are all those answers mentioned above use Focus() etc?

Assuming C#...
On your silverlight page, select yourPage_Created from write code menu
Add the following:
partial void YourPage_Created() // this line should be autogenerated
{
this.FindControl("YourControl").ControlAvailable += YourFieldAvailable;
}
private void YourFieldAvailable(object sender, ControlAvailableArguments e)
{
((System.Windows.Controls.Control)e.Control).GotFocus += YourRoutine;
}
private void YourRoutine(object sender, System.Windows.RoutedEventArgs e)
{
// do your focus specific code in here
}
You will now have a custom focus event for the specified control.
Hope this helps :)

Is there something like an "OnPaint" method in Silverlight?

Is there something like an "OnPaint" method in Silverlight?
Back when I was writing C++, I found that it was easy to use the OnPaint event to customize the display of a class to the screen?
Is there an equivalent in Silverlight? If I want to do something when a UserControl is displayed on the screen, what method would I override?
I noticed this post:
C# WPF OnPaint method alternative?
but it seems that in Silverlight, thre is no "OnRender" method for a UserControl class.

OnPaint was a workaround... to allow you to customise the appearance of controls. That was because you did not have much control over the default appearance of any controls in WinForms applications.
With Silverlight that all changes. Every control is now effectively skinned, using templates and styles, and there are few limitations on how you can customise them. There are far too many links so I just grabbed a couple for you.
Get yourself a good book on Silverlight and learn the proper way to work with it (not around it). This one is one of my favorites.
If you have specific things you are trying to do, to the appearance of user controls, best to list those instead and find out the best way to do it the Silverlight way. :)

You haven't specified what you're trying to do. If you just want to know when a frame is being rendered, the CompositionTarget.Rendering Event will tell you that. If you actually want to draw on the frame being rendered, you cannot do so.

It is LayoutUpdated.
As in:
...
this.LayoutUpdated += new EventHandler(LayoutUpdated);
}
void LayoutUpdated(object sender, EventArgs e)
{}