diff --git a/Bin/SunnyUI.dll b/Bin/SunnyUI.dll
index e747d23c..ffaef7b3 100644
Binary files a/Bin/SunnyUI.dll and b/Bin/SunnyUI.dll differ
diff --git a/Bin/SunnyUI.pdb b/Bin/SunnyUI.pdb
index 61cfa0e5..0ba83ea6 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 e747d23c..ffaef7b3 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 ef56a1f0..b278aee2 100644
--- a/SunnyUI/Charts/UIBarChart.cs
+++ b/SunnyUI/Charts/UIBarChart.cs
@@ -445,7 +445,11 @@ namespace Sunny.UI
                 double ymax = YAxisEnd * YAxisInterval;
                 float pos = (float)((line.Value - ymin) * (Height - BarOption.Grid.Top - BarOption.Grid.Bottom) / (ymax - ymin));
                 pos = (Height - BarOption.Grid.Bottom - pos);
-                g.DrawLine(line.Color, DrawOrigin.X, pos, Width - BarOption.Grid.Right, pos);
+                using (Pen pn = new Pen(line.Color,line.Size))
+                {
+                    g.DrawLine(pn, DrawOrigin.X, pos, Width - BarOption.Grid.Right, pos);
+                }
+               
                 SizeF sf = g.MeasureString(line.Name, SubFont);
 
                 if (line.Left == UILeftAlignment.Left)
diff --git a/SunnyUI/Charts/UIOption.cs b/SunnyUI/Charts/UIOption.cs
index 0a23454a..598fa648 100644
--- a/SunnyUI/Charts/UIOption.cs
+++ b/SunnyUI/Charts/UIOption.cs
@@ -36,7 +36,9 @@ namespace Sunny.UI
         public double Value { get; set; }
         public string Name { get; set; }
         public Color Color { get; set; }
-        public UILeftAlignment Left { get; set; }
+        public UILeftAlignment Left { get; set; } = UILeftAlignment.Left;
+
+        public float Size { get; set; } = 1.0f;
     }
 
     public class UILegend
diff --git a/SunnyUI/Controls/UITreeView.cs b/SunnyUI/Controls/UITreeView.cs
index d49a711b..e6b81d53 100644
--- a/SunnyUI/Controls/UITreeView.cs
+++ b/SunnyUI/Controls/UITreeView.cs
@@ -617,6 +617,8 @@ namespace Sunny.UI
             {
                 base.OnDrawNode(e);
 
+                if (e.Node==null) return;
+
                 if (BorderStyle == BorderStyle.Fixed3D) BorderStyle = BorderStyle.FixedSingle;
 
                 if (e.Node == null || e.Node.Bounds.Width <= 0 && e.Node.Bounds.Height <= 0 && e.Node.Bounds.X <= 0 &&