Assignments on the Web: Increase the Efficiency in Xamarin.Forms

In this guide, I will show how to use the Fody tool to reduce the amount of the required program code, and the use of icon fonts and NcontrolView library for the manual drawing of interface elements.

Business Applications

The first thing you need to know is the definition of the business applications, and differences between them and other kinds of apps.

We usually divide applications into logical groups using such criteria:

– Interface complexity
– Usage of the OS features
– Frequency of the usage

On the basis of these criteria, we usually (with some exceptions) divide all applications into main segments:

– Games
– Entertainment/multimedia
– Communication

If your main programming language is C#, it is recommended to use Xamarin.Forms to make business apps because it’s cross-platform. Effort for the development reduces by 60% respectively for the creation of separate versions for iOS and Android.

Reduce the Amount of Code Using Fody

I’ve mentioned the efficiency of the development, and now I want to tell you about a little tweak that allows you to significantly reduce the amount of program code used to write the ViewModel. It’s called Fody.

Usually, we create private variables and call PropertyChanged manually. This leads to the creation of a pretty volumetric ViewModel:

using System.Runtime.CompilerServices;
    using System.ComponentModel;

    public class LoginViewModel : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        private string _login;
        public string Login {
            get { 
                return _login; 
                  }
          set {
                if (value != _login) {
                    _login = value;
                    NotifyPropertyChanged ();
                }
            }
        }

        private string _password;
        public string Password {
            get { 
                return _password; 
            }
            set {
                if (value != _password) {
                    _password = value;
                    NotifyPropertyChanged ();
                }
            }
        }

        private void NotifyPropertyChanged ([CallerMemberName] string propertyName = "")
        {
            if (PropertyChanged != null) {
                PropertyChanged (this, new PropertyChangedEventArgs (propertyName));
            }
        }
    }
And here is how it will look using the PropertyChanged.Fody plugin:
    using PropertyChanged;

    [ImplementPropertyChanged]
    public class LoginViewModel
    {
        public string Login { get; set; }
        public string Password { get; set; }
    }

To use this plugin, you should add it via Nuget:

Thanks for your attention!

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Welcome to read one of Xamarin examples about using icon fonts as well.