diff --git a/Bin/SunnyUI.dll b/Bin/SunnyUI.dll
index 0b7a09cd..57a1f4dd 100644
Binary files a/Bin/SunnyUI.dll and b/Bin/SunnyUI.dll differ
diff --git a/Bin/SunnyUI.pdb b/Bin/SunnyUI.pdb
index 49083564..f073c8fb 100644
Binary files a/Bin/SunnyUI.pdb and b/Bin/SunnyUI.pdb differ
diff --git a/SunnyUI.Demo/Bin/SunnyUI.dll b/SunnyUI.Demo/Bin/SunnyUI.dll
index 0b7a09cd..57a1f4dd 100644
Binary files a/SunnyUI.Demo/Bin/SunnyUI.dll and b/SunnyUI.Demo/Bin/SunnyUI.dll differ
diff --git a/SunnyUI/Charts/UIBarChart.cs b/SunnyUI/Charts/UIBarChart.cs
index f5f2f31d..e89a3737 100644
--- a/SunnyUI/Charts/UIBarChart.cs
+++ b/SunnyUI/Charts/UIBarChart.cs
@@ -196,36 +196,43 @@ namespace Sunny.UI
         {
             base.OnMouseMove(e);
 
-            if (BarOption.ToolTip == null) return;
-            if (e.Location.X > BarOption.Grid.Left && e.Location.X < Width - BarOption.Grid.Right
-                                                   && e.Location.Y > BarOption.Grid.Top &&
-                                                   e.Location.Y < Height - BarOption.Grid.Bottom)
+            try
             {
-                SelectIndex = (int)((e.Location.X - BarOption.Grid.Left) / DrawBarWidth);
-            }
-            else
-            {
-                SelectIndex = -1;
-            }
-
-            if (SelectIndex >= 0)
-            {
-                if (tip.Text != Bars[0][selectIndex].Tips)
+                if (BarOption.ToolTip == null) return;
+                if (e.Location.X > BarOption.Grid.Left && e.Location.X < Width - BarOption.Grid.Right
+                                                       && e.Location.Y > BarOption.Grid.Top &&
+                                                       e.Location.Y < Height - BarOption.Grid.Bottom)
                 {
-                    tip.Text = Bars[0][selectIndex].Tips;
-                    tip.Size = new Size((int)Bars[0][selectIndex].Size.Width + 4, (int)Bars[0][selectIndex].Size.Height + 4);
+                    SelectIndex = (int)((e.Location.X - BarOption.Grid.Left) / DrawBarWidth);
+                }
+                else
+                {
+                    SelectIndex = -1;
                 }
 
-                int x = e.Location.X + 15;
-                int y = e.Location.Y + 20;
-                if (e.Location.X + 15 + tip.Width > Width - BarOption.Grid.Right)
-                    x = e.Location.X - tip.Width - 2;
-                if (e.Location.Y + 20 + tip.Height > Height - BarOption.Grid.Bottom)
-                    y = e.Location.Y - tip.Height - 2;
+                if (SelectIndex >= 0 && Bars.Count > 0)
+                {
+                    if (tip.Text != Bars[0][selectIndex].Tips)
+                    {
+                        tip.Text = Bars[0][selectIndex].Tips;
+                        tip.Size = new Size((int)Bars[0][selectIndex].Size.Width + 4, (int)Bars[0][selectIndex].Size.Height + 4);
+                    }
 
-                tip.Left = x;
-                tip.Top = y;
-                if (!tip.Visible) tip.Visible = Bars[0][selectIndex].Tips.IsValid();
+                    int x = e.Location.X + 15;
+                    int y = e.Location.Y + 20;
+                    if (e.Location.X + 15 + tip.Width > Width - BarOption.Grid.Right)
+                        x = e.Location.X - tip.Width - 2;
+                    if (e.Location.Y + 20 + tip.Height > Height - BarOption.Grid.Bottom)
+                        y = e.Location.Y - tip.Height - 2;
+
+                    tip.Left = x;
+                    tip.Top = y;
+                    if (!tip.Visible) tip.Visible = Bars[0][selectIndex].Tips.IsValid();
+                }
+            }
+            catch (Exception exception)
+            {
+                Console.WriteLine(exception);
             }
         }
 
diff --git a/SunnyUI/Charts/UIOption.cs b/SunnyUI/Charts/UIOption.cs
index 4d091f34..0a23454a 100644
--- a/SunnyUI/Charts/UIOption.cs
+++ b/SunnyUI/Charts/UIOption.cs
@@ -36,6 +36,7 @@ namespace Sunny.UI
         public double Value { get; set; }
         public string Name { get; set; }
         public Color Color { get; set; }
+        public UILeftAlignment Left { get; set; }
     }
 
     public class UILegend
diff --git a/SunnyUI/Charts/UIPieChart.cs b/SunnyUI/Charts/UIPieChart.cs
index f4f2e51e..0188e81c 100644
--- a/SunnyUI/Charts/UIPieChart.cs
+++ b/SunnyUI/Charts/UIPieChart.cs
@@ -68,6 +68,8 @@ namespace Sunny.UI
             DrawLegend(g, PieOption.Legend);
         }
 
+        private bool AllIsZero;
+
         protected override void CalcData(UIOption option)
         {
             Angles.Clear();
@@ -85,6 +87,7 @@ namespace Sunny.UI
                     all += data.Value;
                 }
 
+                AllIsZero = all.IsZero();
                 if (all.IsZero()) return;
                 float start = 0;
                 for (int i = 0; i < pie.Data.Count; i++)
@@ -120,6 +123,17 @@ namespace Sunny.UI
         {
             if (series == null || series.Count == 0) return;
 
+            if (AllIsZero)
+            {
+                if (series.Count > 0)
+                {
+                    RectangleF rect = GetSeriesRect(series[0]);
+                    g.DrawEllipse(Color.Red, rect);
+                }
+
+                return;
+            }
+
             for (int pieIndex = 0; pieIndex < series.Count; pieIndex++)
             {
                 var pie = series[pieIndex];
@@ -184,6 +198,8 @@ namespace Sunny.UI
                 return;
             }
 
+            if (AllIsZero) return;
+
             for (int pieIndex = 0; pieIndex < PieOption.SeriesCount; pieIndex++)
             {
                 RectangleF rect = GetSeriesRect(PieOption.Series[pieIndex]);
diff --git a/SunnyUI/Controls/UIRadioButton.cs b/SunnyUI/Controls/UIRadioButton.cs
index 1a5660fe..92c958ae 100644
--- a/SunnyUI/Controls/UIRadioButton.cs
+++ b/SunnyUI/Controls/UIRadioButton.cs
@@ -179,6 +179,8 @@ namespace Sunny.UI
             {
                 Checked = true;
             }
+
+            base.OnClick(e);
         }
 
         public override void SetStyleColor(UIBaseStyle uiColor)