address book using mvvm

PacticeSolution/AddressBook_MVVMSampleV2/Service/MessageBoxService.cs

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+using AddressBook_MVVMSampleV2.Interface;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace AddressBook_MVVMSampleV2.Service
+{
+    internal class MessageBoxService : IMessageBoxService
+    {
+        public MessageBoxResult Show(string message)
+        {
+            return MessageBox.Show(message);
+        }
+
+        public MessageBoxResult Show(string message, string caption)
+        {
+            return MessageBox.Show(message, caption);
+        }
+
+        public MessageBoxResult Show(string message, string caption, MessageBoxButton button, MessageBoxImage icon)
+        {
+            return MessageBox.Show(message, caption, button, icon);
+        }
+    }
+}