diff --git a/week0002/hainnt/csharp/week0002.cs b/week0002/hainnt/csharp/week0002.cs
new file mode 100644
index 0000000..67b7b08
--- /dev/null
+++ b/week0002/hainnt/csharp/week0002.cs
@@ -0,0 +1,134 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Week0002
+{
+    public static class Week0002
+    {
+        public static void Main(string[] args)
+        {
+            while (true)
+            {
+                Console.Write("Input M: ");
+                var m = Convert.ToInt32(Console.ReadLine());
+                Console.Write("Input N: ");
+                var n = Convert.ToInt32(Console.ReadLine());
+
+                var arr = Cal(m, n);
+
+                foreach (var i in arr)
+                {
+                    foreach (var j in i)
+                    {
+                        Console.Write(Draw(j, m * n) + "    ");
+                    }
+                    Console.WriteLine();
+                }
+                Console.WriteLine();
+            }
+        }
+
+        public static List<List<int>> Cal(double m, double n)
+        {
+            var array = new List<List<int>>();
+
+            //Allocate 2 dimension array
+            for (var i = 0; i < m; i++)
+            {
+                array.Add(new List<int>());
+                for (var j = 0; j < n; j++)
+                {
+                    array[i].Add(0);
+                }
+            }
+
+            var pointer = new Cell(0, 0);
+
+            //Change direction points
+            var MinMin = new Cell(1, 0);
+            var MinMax = new Cell(0, n - 1);
+            var MaxMax = new Cell(m - 1, n - 1);
+            var MaxMin = new Cell(m - 1, 0);
+
+            var move = new Cell(0, 1);
+
+            for (var i = 1; i <= m * n; i++)
+            {
+                array[(int)pointer.X][(int)pointer.Y] = i;
+
+                if (pointer.Equal(MinMin))
+                {
+                    move = new Cell(0, 1);
+
+                    if (MinMin.X + 1 <= (m - 1) / 2 && MinMin.Y + 1 < (n - 1) / 2)
+                    {
+
+                        MinMin.X++; MinMin.Y++;
+                    }
+                }
+                else if (pointer.Equal(MinMax))
+                {
+                    move = new Cell(1, 0);
+                    if (MinMax.X + 1 <= (m - 1) / 2 && MinMax.Y - 1 >= (n - 1) / 2)
+                    {
+                        MinMax.X++; MinMax.Y--;
+                    }
+                }
+                else if (pointer.Equal(MaxMax))
+                {
+                    if (MaxMax.X - 1 >= (m - 1) / 2 && MaxMax.Y - 1 >= (n - 1) / 2)
+                    {
+                        MaxMax.X--; MaxMax.Y--;
+                    }
+                    move = new Cell(0, -1);
+                }
+                else if (pointer.Equal(MaxMin))
+                {
+                    if (MaxMin.X - 1 > (m - 1) / 2 && MaxMin.Y + 1 <= (n - 1) / 2)
+                    {
+                        MaxMin.X--; MaxMin.Y++;
+                    }
+                    move = new Cell(-1, 0);
+                }
+                
+
+                pointer += move;
+            }
+
+            return array;
+        }
+        public static bool Equal(this Cell cell, Cell obj)
+        {
+            return cell.X == obj.X && cell.Y == obj.Y;
+        }
+
+        public static string Draw(int num, int max)
+        {
+            var result = "";
+            var size = max.ToString().Count() - num.ToString().Count();
+            for (var i = 0; i < size; i++)
+            {
+                result += " ";
+            }
+            return result += num;
+        }
+    }
+
+    public class Cell
+    {
+        public Cell(double x, double y)
+        {
+            X = x;
+            Y = y;
+        }
+
+        public double X { get; set; }
+        public double Y { get; set; }
+
+        public static Cell operator +(Cell c1, Cell c2)
+        {
+            return new Cell(c1.X + c2.X, c1.Y + c2.Y);
+        }
+    }
+}