address book by mvvm pattern

PacticeSolution/AddressBook_MVVMSample/Model/Person.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AddressBook_MVVMSample.Model
+{
+    public class Person : INotifyPropertyChanged
+    {
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        public Person()
+        {
+            
+        }
+
+        public Person(Person p)
+        {
+            this.Name = p.Name;
+            this.Gender = p.Gender;
+            this.PhoneNumber = p.PhoneNumber;
+            this.Address = p.Address;
+        }
+
+        private string _name;
+        public string Name
+        {
+            get { return _name; }
+            set
+            {
+                _name = value;
+                OnPropertyChanged(nameof(Name));
+            }
+        }
+
+        private bool _gender;
+        public bool Gender
+        {
+            get { return _gender; }
+            set
+            {
+                _gender = value;
+                OnPropertyChanged(nameof(Gender));
+            }
+        }
+
+        private string _phoneNumber;
+        public string PhoneNumber
+        {
+            get { return _phoneNumber; }
+            set
+            {
+                _phoneNumber = value;
+                OnPropertyChanged(nameof(PhoneNumber));
+            }
+        }
+
+        private string _address;
+        public string Address
+        {
+            get { return _address; }
+            set
+            {
+                _address = value;
+                OnPropertyChanged(nameof(Address));
+            }
+        }
+
+        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
+        {
+            this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+    }
+}