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Mute Windows 10 Notification using C# or WPF

I'm currently researching on how to mute the windows 10 notification but it i havent found any concrete solution yet.
What i want to do is to disable all notifications when i press a button or check a checkbox.
It is similar on what you do on the notification settings, but i want it to do it progmatically on my application.
I'm currently reading the document of microsoft about Notification Listener.
https://learn.microsoft.com/en-us/windows/uwp/design/shell/tiles-and-notifications/notification-listener

NotificationListener allows you to access the notifications, but not to the configuration of the system. And you must think it's a UWP Api...
You want to do something that can not be done in UWP Api(impossible) nor WPF(possible, i wish you good luck).
You can't change system settings inside the UWP app box -safety and things-. The way to do it is "Open the Configuration App where you want the user make the change".
If you wan't to this in WPF/.net you'd have to play with PInvoke and WinApi seriously. And that means thinking about privileges, run as admin, find the functions in WinApi .h files, etc...
Keeping simple, in UWP, nope; in WPF, you have to read a lot of source code/documentation of Windows .h files, make the c# version of the structs, etc...
The real question here is... It's necessary? Windows provides Focus Assist with two clicks (corner, Focus Assist)

I really appreciate your feedbacks! I did some tinkering and found out the service responsible for the notification. I'm not really confident that this is the best approach, but it is working for me.
What I did was I stopped the service using C#. Here is my sample code:
ServiceController[] services = ServiceController.GetServices();
foreach (ServiceController service in services)
{
if (service.ServiceName.Contains(serviceName))
{
service.Start();
}
}
Here is the service responsible for the notifications:
Notification Service
I dont know if this is a good practice or not so I'm still open for feedbacks and suggestions.
Thank you!

How can I set album art for a song in a Windows App (e.g. without tag-lib#)?

I had thought that my Windows App was finished and ready for release. However, during the certification process, ACK told me Tag-Lib# uses API that the Windows Store does not support. Now I need to find some other way that the Windows Store DOES support to be able to programmatically set the album art for songs. Any ideas? (I would also be happy if anyone knew of a way to modify Tag-Lib# to comply with the Windows Store restrictions.)

Use the Windows App Certification Kit to see which API's are called. Then try to modify the Tag-Lib# source to not use those API's, or pick the relevant code and build your own library.
Though I think, given it's used for reading and writing files, it relies on System.IO which will require quite some rewriting to Windows.Storage.

Changes required in existing Web Application to access in Smart phones/Tablet computer

I have a ASP.NET Web Application. I want to access this application in Smart phones and tablet computer. So please help me on this. What are the changes required?

The answer to your question could range from nothing to everything. At the end of the day, it all depends on what you existing app looks like in a target mobile device (iPad, Android, etc). If your existing app looks and functions properly, then you don't have to do anything. If not, well, you figure out what's wrong and make it work.
Your question really isn't suited for StackOverflow because it is way to broad and impossible to answer.

Asp.net applications can run in web browsers, including the ones that come with smart phones and tablets. The main concern would be the various screen sizes of the various devices. Because they vary so much, a good design concept for your asp.net application would be to layout content in a way it can adapt to the screen size.
The best technology for this within an asp.net application, especially for an application that was already built, would be to implement style sheets (.css)
Look at these styles as an example:
float, clear, max-width and max-height
Check these and other styles at: http://www.w3schools.com/css/
Now, there is also the concept of having your asp.net application detect which device is being used and then generate UI code (or load .ascx controls) accordingly to provide device specific displays.
Check:
Request.Browser.IsMobileDevice
Request.UserAgent (http://msdn.microsoft.com/en-us/library/system.web.httprequest.useragent.aspx)
However, I would only suggest using this to a minimum, because if you make a change to your UI, you won’t want to keep updating multiple instances of the UI for different devices.
A good compromise would be to build a style sheet for each group of screen sizes (smart phone, tablet, PC, etc.) and then detect which device is in use and include the respective style sheet.
NB: there are many open source projects, which could get you running more quickly with mobile development in mind. Check sourceforge.net and codeplex.com for examples.

Set any application's volume

I was wondering how I could set a specific application (as in any running application, not just my own)'s volume level in c#.
I know I'd probably have to use P/invoke, this is fine. I'm just not sure on how the sound api's work and how I would go about getting/setting the volume of specific applications (like the volume mixer in vista/7 can).
I know it's possible to do programattically because nircmd has a feature that can do it.
Any help would be appriciated, thanks.

I think you should look here. Following the links you'll find interfaces and API functions to use to manipulate endpoints' volume. Together with the documentation, Microsoft provided some code samples in C++. As you said, it is possible to get the same functionalities to work in .NET using platform invoke.

I think (and hope) your request is, for all intents and purposes, impossible. Allowing an application to set its own volume is like allowing an application to override the user's notification icon settings. These settings are user settings, so you can't circumvent them.
Imagine for an instance that a user has the volume of his speakers set way up, but has dimmed the volumes of all individual applications. Your application comes along and goes 'whatevs, I'll just set myself to full volume'. You've just made a user go deaf, or at least cower in a corner of the room, scared to death.

Getting started with writing a desktop app that talks to an iPhone

I'm thinking of writing an app to selectively transfer photos/music to and from my iPhone, mostly for fun and personal convenience. However, I'm stuck at the very beginning -- where do I look to find information on how to do this?
Pretty much every link I see talks about developing applications that run on the iPhone, but nothing about desktop app for interfacing with an iPhone.
I'm on Windows (no access to a Mac, but I'll take suggestions for that for when I eventually acquire one), and I'm most familiar with C#, but other languages are definitely an option.
Can anybody offer me a few pointers on getting started? Thanks.
Edit: to clarify further, I don't need information on how to write applications that run ON the iphone. There are plenty of resources out for that. :) What I'm looking for it some pointers on how to "talk" to an iPhone or an iPod through the USB cord, if that's even possible.
Edit #2: I found libmobiledevice library that effectively does what I'm talking about on Linux. I don't think I'm too keen on attempting to port it over to Windows, though. :)

I found what I was looking for: SharePodLib. Thanks, everyone.

I recommend and have used the following options:
Option 1:
Run a small and light webserver in the iPhone and of course, use HTTP to transfer. I recommend mongoose websever, i've tried it with very simple and very heavy load. Also here, you can find an actual drag and drop project to deploy this webserver in the iPhone.
Option 2:
Use something like Bonjour, this is something very useful if you want the "smart" discovery of your device in the network, maybe for opportunistic peer discovery. You can check here and here, to understand how to get bonjour to run in the iPhone and use it to exploit discovery and sharing.
Hope it helps!!

Unfortunately, there's no no way to sync an iPhone app with a Mac app over USB, at least in the current SDK. As already stated, you'll have to either sync over HTTP or use the local network. You might want to check out ZSync, a Cocoa library for bonjour syncing (I haven't used it, and it's in early development stages, but it looks interesting).

Unfortunately there is no officially sanctioned method to do what you describe. In Apple's view the only application that should have visibility of that information is iTunes. There are applications out there that appear to be able to do this, but I suspect they have reverse engineered the USB protocol and are thus open to being locked out if the protocol changes.