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FModel/Framework/NavigationList.cs

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+using System.Collections.Generic;
+
+namespace FModel.Framework
+{
+    public class NavigationList<T> : List<T>
+    {
+        private int _currentIndex = 0;
+        public int CurrentIndex
+        {
+            get
+            {
+                if (_currentIndex > Count - 1) { _currentIndex = Count - 1; }
+                if (_currentIndex < 0) { _currentIndex = 0; }
+                return _currentIndex;
+            }
+            set { _currentIndex = value; }
+        }
+
+        public T MoveNext
+        {
+            get { _currentIndex++; return this[CurrentIndex]; }
+        }
+
+        public T MovePrevious
+        {
+            get { _currentIndex--; return this[CurrentIndex]; }
+        }
+
+        public T Current
+        {
+            get { return this[CurrentIndex]; }
+        }
+    }
+}