Quizzer-8: Migrating to .NET 10

Quizzer-8/Quizzer/Models/Statistic.cs

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+using System.Collections.Generic;
+
+namespace Quizzer.Models
+{
+    /// <summary>
+    /// Collective knowledge of quizz answers
+    /// </summary>
+    public class Statistic
+    {
+        public string QuizzID { get; set; }
+        public int Version { get; set; }
+        public string StatsJson { get; set; }
+
+        public Statistic()
+        {
+            QuizzID = String.Empty;
+            Version = 0;
+            StatsJson = String.Empty;
+        }
+    }
+
+    public class StatisticsMC : Statistic
+    {
+        public List<StatisticsMCItem> MCList { get; set; }
+
+        public StatisticsMC()
+        {
+            MCList = new List<StatisticsMCItem>();
+        }
+
+    }
+
+    public class StatisticsMCItem
+    {
+        public string QuestionID { get; set; }
+        public List<int> Counter { get; set; }
+
+        public StatisticsMCItem()
+        {
+            Counter = new List<int>();
+            QuestionID = string.Empty;
+        }
+    }
+
+    public class StatisticsMCDN : StatisticsMC
+    {
+        public List<MCQuestion> Questions { get; set; }
+
+        public StatisticsMCDN()
+        {
+            Questions = new List<MCQuestion>();
+        }
+    }
+
+    public class StatisticsStudentByCategory
+    {
+        public string CategoryID { get; set; }
+        public string CategoryName { get; set; }
+        public int percentage { get; set; }
+        private int score;
+        private int max;
+
+        public StatisticsStudentByCategory()
+        {
+            score = 0;
+            max = 0;
+            percentage = 0;
+        }
+
+        public void Update (int theScore, int theMax)
+        {
+            score += theScore;
+            max += theMax;
+            percentage = (score * 100) / max;
+        }
+
+    }
+}