diff --git a/Bin/SunnyUI.dll b/Bin/SunnyUI.dll
index f5b65394..e747d23c 100644
Binary files a/Bin/SunnyUI.dll and b/Bin/SunnyUI.dll differ
diff --git a/Bin/SunnyUI.pdb b/Bin/SunnyUI.pdb
index e0a3eb8b..61cfa0e5 100644
Binary files a/Bin/SunnyUI.pdb and b/Bin/SunnyUI.pdb differ
diff --git a/SunnyUI.Demo/Bin/SunnyUI.Demo.exe b/SunnyUI.Demo/Bin/SunnyUI.Demo.exe
index ade88288..0936a5fe 100644
Binary files a/SunnyUI.Demo/Bin/SunnyUI.Demo.exe and b/SunnyUI.Demo/Bin/SunnyUI.Demo.exe differ
diff --git a/SunnyUI.Demo/Bin/SunnyUI.dll b/SunnyUI.Demo/Bin/SunnyUI.dll
index f5b65394..e747d23c 100644
Binary files a/SunnyUI.Demo/Bin/SunnyUI.dll and b/SunnyUI.Demo/Bin/SunnyUI.dll differ
diff --git a/SunnyUI.Demo/Controls/FDataGridView.Designer.cs b/SunnyUI.Demo/Controls/FDataGridView.Designer.cs
index fe18112d..465b1d62 100644
--- a/SunnyUI.Demo/Controls/FDataGridView.Designer.cs
+++ b/SunnyUI.Demo/Controls/FDataGridView.Designer.cs
@@ -60,7 +60,8 @@
             dataGridViewCellStyle2.SelectionForeColor = System.Drawing.SystemColors.HighlightText;
             dataGridViewCellStyle2.WrapMode = System.Windows.Forms.DataGridViewTriState.True;
             this.uiDataGridView1.ColumnHeadersDefaultCellStyle = dataGridViewCellStyle2;
-            this.uiDataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.uiDataGridView1.ColumnHeadersHeight = 32;
+            this.uiDataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.DisableResizing;
             dataGridViewCellStyle3.Alignment = System.Windows.Forms.DataGridViewContentAlignment.MiddleLeft;
             dataGridViewCellStyle3.BackColor = System.Drawing.SystemColors.Window;
             dataGridViewCellStyle3.Font = new System.Drawing.Font("微软雅黑", 12F);
diff --git a/SunnyUI.Demo/Controls/FDataGridView.cs b/SunnyUI.Demo/Controls/FDataGridView.cs
index 9c709d37..60943e97 100644
--- a/SunnyUI.Demo/Controls/FDataGridView.cs
+++ b/SunnyUI.Demo/Controls/FDataGridView.cs
@@ -1,5 +1,4 @@
 using System.Collections.Generic;
-using System.Windows.Forms;
 
 namespace Sunny.UI.Demo
 {
@@ -9,7 +8,7 @@ namespace Sunny.UI.Demo
         {
             InitializeComponent();
 
-            uiDataGridView1.AddColumn("Column1", "Column1").SetFixedMode(400); 
+            uiDataGridView1.AddColumn("Column1", "Column1").SetFixedMode(400);
             uiDataGridView1.AddColumn("Column2", "Column2").SetFixedMode(400);
             uiDataGridView1.AddColumn("Column3", "Column3").SetFixedMode(400);
             uiDataGridView1.AddColumn("Column4", "Column4").SetFixedMode(400);
diff --git a/SunnyUI/Controls/UIDataGridView.cs b/SunnyUI/Controls/UIDataGridView.cs
index c3437f0b..cca8c9f4 100644
--- a/SunnyUI/Controls/UIDataGridView.cs
+++ b/SunnyUI/Controls/UIDataGridView.cs
@@ -89,7 +89,20 @@ namespace Sunny.UI
 
         private void HBar_ValueChanged(object sender, EventArgs e)
         {
-            FirstDisplayedScrollingColumnIndex = HBar.Value;
+            int idx = 0;
+            for (int i = 0; i < ColumnCount; i++)
+            {
+                if (Columns[i].Visible && idx == HBar.Value)
+                {
+                    FirstDisplayedScrollingColumnIndex = i;
+                    break;
+                }
+
+                if (Columns[i].Visible)
+                {
+                    idx++;
+                }
+            }
         }
 
         public void Init()
@@ -168,7 +181,7 @@ namespace Sunny.UI
 
             if (HorizontalScrollBar.Visible)
             {
-                HBar.Maximum = ColumnCount - 1;
+                HBar.Maximum = VisibleColumnCount() - 1;
                 HBar.Value = FirstDisplayedScrollingColumnIndex;
                 HBar.Visible = true;
             }
@@ -180,6 +193,17 @@ namespace Sunny.UI
             SetBarPosition();
         }
 
+        private int VisibleColumnCount()
+        {
+            int cnt = 0;
+            foreach (DataGridViewColumn column in Columns)
+            {
+                if (column.Visible) cnt++;
+            }
+
+            return cnt;
+        }
+
         protected override void OnMouseWheel(MouseEventArgs e)
         {
             base.OnMouseWheel(e);