Xamarin is cross platform framework. Developer can develop android, iOS and window app using xamarin framework. Xamarin is open source and free platforms for users.
1 - Check Internet Connection 2 - Read JSON Array from URL 3 - SQLite DB in Xamarin 4 - SQLite - Insert 5 - SQLite - Select 6 - Mac Address in Xamarin Forms 7 - Get current location latitude and longitude in Xamarin Forms 8 - Gradient background in Xamarin Forms