You build your mobile app entirely in HTML, however those apps can suffer from performance problems when trying to accomplish complex processing or UI effects and are also limited in the platform features which they can access.
Step 1
Go to Visual Studio.
Click File -> New -> Project.
Click C# -> Cross Platform -> Cross Platform App (Xamarin.Forms.Portable).
Enter the Application Name, followed by clicking OK.
Step 2
In this step, go to Solution Explorer -> Portable Class Library, followed by clicking XAML, insert the code given below XAML page and save it.
Step 3
Open App.Xaml.cs and set the page name.
Step 4
Open Page1.Xaml.cs and add the code in this page.
Step 5
Click Build menu and go to Configuration Manager
Configure your Android, Windows, iOS Depoly & Build Setting, followed by clicking Close.
Step 6.
In this step, select Build & Depoly option, followed by clicking to Start your Application.
Now, go to Run option, choose Debug from the list of an Android or an iOS or UWP Simulators, which are available. You can choose any one Simulator and run it.
Step 7
Output
After few seconds, the app will start running on your Android Simulator. You will see your app is working successfully.
Xamarin.Forms For Beginners