Refactoring - split data, logic and model layers; custom network exception

StudentHouseDashboard/Models/Announcement.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Models
+{
+    public class Announcement : GenericMessage, IVotable
+    {
+        public Announcement(int id, User author, string description, string title, DateTime publishDate, bool isImportant, bool isSticky) : base(id, author, description, title, publishDate)
+        {
+            IsImportant = isImportant;
+            IsSticky = isSticky;
+        }
+
+        public List<Comment> Comments
+        {
+            get;set;
+        }
+
+        public bool IsImportant
+        {
+            get;set;
+        }
+
+        public bool IsSticky
+        {
+            get; set;
+        }
+
+        public void DownVote()
+        {
+            throw new NotImplementedException();
+        }
+
+        public void UpVote()
+        {
+            throw new NotImplementedException();
+        }
+        public override string ToString()
+        {
+            return $"{Title} ({PublishDate.ToString("g")} - {Author.Name})";
+        }
+    }
+}