I'm C# developer. I worked in Microsoft in AppFactory program for developing Windows 8 and Windows Phone Apps. I was awarded "Nokia Premium Developer Account" from Nokia Egypt for developing for Windows Phone. I got a quiz project like the one you are asking for and it was developed in WPF (Xaml technology too). I was also MSPR in Microsoft Tech Club in my university. You can check my resume, Apps and the project I told you about. If you accepted, just let me know to discuss more details as according to your specific requirements, the budget, milestones and time period may be changed. Note: this bid is for Windows Phone and Windows 8 both. Thanks