diff --git a/2019/05/PanelBook.Designer.cs b/2019/05/PanelBook.Designer.cs
index 576b43a..7cb44d1 100644
--- a/2019/05/PanelBook.Designer.cs
+++ b/2019/05/PanelBook.Designer.cs
@@ -28,8 +28,7 @@
         /// </summary>
         private void InitializeComponent()
         {
-            components = new System.ComponentModel.Container();
-            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            components = new System.ComponentModel.Container();            
         }
 
         #endregion
diff --git a/2019/05/PanelBook.cs b/2019/05/PanelBook.cs
index 190ec28..8375433 100644
--- a/2019/05/PanelBook.cs
+++ b/2019/05/PanelBook.cs
@@ -1,12 +1,72 @@
 namespace RyzStudio.Windows.Forms
 {
     using System;
+    using System.Collections;
     using System.ComponentModel;
+    using System.Drawing;
     using System.Windows.Forms;
 
     [ToolboxItem(true)]
     public partial class PanelBook : UserControl
     {
+        public class PanelCollection : CollectionBase
+        {
+            protected PanelBook panelBook = null;
+
+            public PanelCollection(PanelBook parentPanelBook) : base()
+            {
+                panelBook = parentPanelBook;
+            }
+
+            public PanelBook Parent => panelBook;
+
+            public Panel this[int index] { get => (Panel)List[index]; set => List[index] = value; }
+
+            public int Add(Panel value) => List.Add(value);
+
+            public void AddRange(Panel[] pages) => Array.ForEach(pages, x => this.Add(x));
+
+            public bool Contains(Panel value) => List.Contains(value);
+
+            public int IndexOf(Panel value) => List.IndexOf(value);
+
+            public void Insert(int index, Panel value) => List.Insert(index, value);
+
+            public void Remove(Panel value) => List.Remove(value);
+
+            protected override void OnInsertComplete(int index, object value)
+            {
+                base.OnInsertComplete(index, value);
+
+                if (panelBook != null)
+                {
+                    panelBook.PageIndex = index;
+                }
+            }
+
+            protected override void OnRemoveComplete(int index, object value)
+            {
+                base.OnRemoveComplete(index, value);
+
+                if (panelBook != null)
+                {
+                    if (panelBook.PageIndex == index)
+                    {
+                        if (index < InnerList.Count)
+                        {
+                            panelBook.PageIndex = index;
+                        }
+                        else
+                        {
+                            panelBook.PageIndex = InnerList.Count - 1;
+                        }
+                    }
+                }
+            }
+
+        }
+
+
         protected PanelCollection panelCollection = null;
 
         public PanelBook()
@@ -14,51 +74,49 @@
             InitializeComponent();
 
             panelCollection = new PanelCollection(this);
-
         }
 
-        public Panel ActivePanel { get; set; } = null;
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
+        public Panel ActivePanel { get; protected set; } = null;
+
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
+        public override bool AutoScroll { get => base.AutoScroll; set => base.AutoScroll = value; }
+
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
+        public new Size AutoScrollMargin { get => base.AutoScrollMargin; set => base.AutoScrollMargin = value; }
+
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
+        public new Size AutoScrollMinSize { get => base.AutoScrollMinSize; set => base.AutoScrollMinSize = value; }
+
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
+        public override Image BackgroundImage { get => base.BackgroundImage; set => base.BackgroundImage = value; }
+
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
+        public override ImageLayout BackgroundImageLayout { get => base.BackgroundImageLayout; set => base.BackgroundImageLayout = value; }
+
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
+        public new ImeMode ImeMode { get => base.ImeMode; set => base.ImeMode = value; }
+
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
+        public override RightToLeft RightToLeft { get => base.RightToLeft; set => base.RightToLeft = value; }
+
+        [Browsable(false), EditorBrowsable(EditorBrowsableState.Never)]
+        public new bool UseWaitCursor { get => base.UseWaitCursor; set => base.UseWaitCursor = value; }
 
         [Category("Collection")]
         [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
-        public PanelCollection Pages
-        {
-            get { return panelCollection; }
-        }
+        public PanelCollection Pages => panelCollection;
 
         [Category("Collection")]
         public int SelectedIndex
         {
-            get
-            {
-                if (panelCollection.Count <= 0)
-                {
-                    return -1;
-                }
-
-                return panelCollection.IndexOf(this.ActivePanel);
-            }
+            get => (panelCollection.Count <= 0) ? -1 : panelCollection.IndexOf(this.ActivePanel);
             set
             {
-                if (panelCollection.Count <= 0)
-                {
-                    return;
-                }
-
-                if (value < 0)
-                {
-                    return;
-                }
-
-                if (value > (panelCollection.Count - 1))
-                {
-                    return;
-                }
-
-                if (value == this.SelectedIndex)
-                {
-                    return;
-                }
+                if (panelCollection.Count <= 0) return;
+                if (value < 0) return;
+                if (value > (panelCollection.Count - 1)) return;
+                if (value == this.SelectedIndex) return;
 
                 ActivatePanel(value);
             }
@@ -66,10 +124,7 @@
 
         protected internal int PageIndex
         {
-            get
-            {
-                return panelCollection.IndexOf(this.ActivePanel);
-            }
+            get => panelCollection.IndexOf(this.ActivePanel);
             set
             {
                 if (panelCollection.Count <= 0)
@@ -154,6 +209,5 @@
             }
         }
 
-
     }
-}
+}
\ No newline at end of file
diff --git a/2019/05/PanelCollection.cs b/2019/05/PanelCollection.cs
deleted file mode 100644
index af9838b..0000000
--- a/2019/05/PanelCollection.cs
+++ /dev/null
@@ -1,80 +0,0 @@
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Windows.Forms;
-
-namespace RyzStudio.Windows.Forms
-{
-    [ToolboxItem(true)]
-    public class PanelCollection : CollectionBase
-    {
-        protected PanelBook panelBook = null;
-
-        public PanelCollection()
-        {
-
-        }
-
-        public PanelCollection(PanelBook parent) : base()
-        {
-            panelBook = parent;
-        }
-
-        public PanelBook Parent => panelBook;
-
-        public Panel this[int index] { get => (Panel)List[index]; set => List[index] = value; }
-
-        public int Add(Panel value) => List.Add(value);
-
-        public void AddRange(Panel[] pages)
-        {
-            foreach (Panel page in pages)
-            {
-                this.Add(page);
-            }
-        }
-
-        public int IndexOf(Panel value) => (List.IndexOf(value));
-
-        public void Insert(int index, Panel value) => List.Insert(index, value);
-
-        public void Remove(Panel value) => List.Remove(value);
-
-        public bool Contains(Panel value) => List.Contains(value);
-
-        protected override void OnInsertComplete(int index, object value)
-        {
-            base.OnInsertComplete(index, value);
-
-            if (panelBook != null)
-            {
-                panelBook.PageIndex = index;
-            }
-        }
-
-        protected override void OnRemoveComplete(int index, object value)
-        {
-            base.OnRemoveComplete(index, value);
-
-            if (panelBook != null)
-            {
-                if (panelBook.PageIndex == index)
-                {
-                    if (index < InnerList.Count)
-                    {
-                        panelBook.PageIndex = index;
-                    }
-                    else
-                    {
-                        panelBook.PageIndex = InnerList.Count - 1;
-                    }
-                }
-            }
-        }
-
-    }
-}