diff --git a/SunnyUI/Controls/DropItem/UIDropControl.Designer.cs b/SunnyUI/Controls/DropItem/UIDropControl.Designer.cs
index a0c6cc4d..ae37d402 100644
--- a/SunnyUI/Controls/DropItem/UIDropControl.Designer.cs
+++ b/SunnyUI/Controls/DropItem/UIDropControl.Designer.cs
@@ -36,13 +36,11 @@
             // 
             // UIDropControl
             // 
-            AutoScaleDimensions = new System.Drawing.SizeF(10F, 21F);
             AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
             MinimumSize = new System.Drawing.Size(63, 0);
             Name = "UIDropControl";
-            Size = new System.Drawing.Size(150, 29);
+            Size = new System.Drawing.Size(194, 29);
             ResumeLayout(false);
-
         }
 
         #endregion
diff --git a/SunnyUI/Controls/DropItem/UIDropControl.cs b/SunnyUI/Controls/DropItem/UIDropControl.cs
index f731969a..d564cbbe 100644
--- a/SunnyUI/Controls/DropItem/UIDropControl.cs
+++ b/SunnyUI/Controls/DropItem/UIDropControl.cs
@@ -27,6 +27,8 @@
  * 2023-05-16: V3.3.6 重构DrawFontImage函数
  * 2023-08-24: V3.4.2 修改背景色后编辑框颜色修复
  * 2023-08-28: V3.4.2 下拉框按钮图标增加编辑器
+ * 2023-10-25: V3.5.1 修复在高DPI下，文字垂直不居中的问题
+ * 2023-10-25: V3.5.1 修复在某些字体不显示下划线的问题
 ******************************************************************************/
 
 using System;
@@ -47,8 +49,7 @@ namespace Sunny.UI
             SetStyleFlags();
             Padding = new Padding(0, 0, 30, 2);
 
-            edit.AutoSize = false;
-            //edit.Font = UIStyles.Font();
+            edit.AutoSize = true;
             edit.Left = 4;
             edit.Top = 3;
             edit.Text = String.Empty;
@@ -59,9 +60,14 @@ namespace Sunny.UI
             edit.KeyUp += EditOnKeyUp;
             edit.KeyPress += EditOnKeyPress;
             edit.LostFocus += Edit_LostFocus;
+            edit.SizeChanged += Edit_SizeChanged;
             edit.Invalidate();
             Controls.Add(edit);
 
+            lastEditHeight = edit.Height;
+            Width = 150;
+            Height = 29;
+
             TextAlignment = ContentAlignment.MiddleLeft;
             fillColor = Color.White;
             edit.BackColor = Color.White;
@@ -70,6 +76,16 @@ namespace Sunny.UI
             ControlBoxRect = new Rectangle(Width - 24, 0, 24, Height);
         }
 
+        int lastEditHeight = -1;
+        private void Edit_SizeChanged(object sender, EventArgs e)
+        {
+            if (lastEditHeight != edit.Height)
+            {
+                lastEditHeight = edit.Height;
+                SizeChange();
+            }
+        }
+
         public override void SetDPIScale()
         {
             base.SetDPIScale();
@@ -87,7 +103,6 @@ namespace Sunny.UI
         {
             base.OnFontChanged(e);
             if (DefaultFontSize < 0 && edit != null) edit.Font = this.Font;
-            SizeChange();
             Invalidate();
         }
 
@@ -371,19 +386,36 @@ namespace Sunny.UI
         /// <param name="e">参数</param>
         protected override void OnSizeChanged(EventArgs e)
         {
-            SizeChange();
+            base.OnSizeChanged(e);
+
+            if (!NoNeedChange)
+            {
+                SizeChange();
+            }
+
             if (tipsBtn != null)
             {
                 tipsBtn.Location = new System.Drawing.Point(Width - 8, 2);
             }
         }
 
+        private bool NoNeedChange = false;
+
         private void SizeChange()
         {
-            if (Height < UIGlobal.EditorMinHeight) Height = UIGlobal.EditorMinHeight;
-            if (Height > UIGlobal.EditorMaxHeight) Height = UIGlobal.EditorMaxHeight;
-            edit.Height = Math.Min(Height - RectSize * 2, edit.PreferredHeight);
-            edit.Top = (Height - edit.Height) / 2;
+            if (Height < edit.Height + RectSize * 2 + 2)
+            {
+                NoNeedChange = true;
+                Height = edit.Height + RectSize * 2 + 2;
+                edit.Top = (Height - edit.Height) / 2;
+                NoNeedChange = false;
+            }
+
+            if (edit.Top != (Height - edit.Height) / 2 + 1)
+            {
+                edit.Top = (Height - edit.Height) / 2 + 1;
+            }
+
             edit.Left = 4 + Padding.Left;
             edit.Width = Width - Padding.Left - Padding.Right - 4;
             ControlBoxRect = new Rectangle(Width - 24, 0, 24, Height);
diff --git a/SunnyUI/Controls/DropItem/UIDropControl.resx b/SunnyUI/Controls/DropItem/UIDropControl.resx
index 1af7de15..af32865e 100644
--- a/SunnyUI/Controls/DropItem/UIDropControl.resx
+++ b/SunnyUI/Controls/DropItem/UIDropControl.resx
@@ -1,17 +1,17 @@
 <?xml version="1.0" encoding="utf-8"?>
 <root>
-  <!-- 
+  <!--
     Microsoft ResX Schema 
-    
+
     Version 2.0
-    
-    The primary goals of this format is to allow a simple XML format 
-    that is mostly human readable. The generation and parsing of the 
-    various data types are done through the TypeConverter classes 
+
+    The primary goals of this format is to allow a simple XML format
+    that is mostly human readable. The generation and parsing of the
+    various data types are done through the TypeConverter classes
     associated with the data types.
-    
+
     Example:
-    
+
     ... ado.net/XML headers & schema ...
     <resheader name="resmimetype">text/microsoft-resx</resheader>
     <resheader name="version">2.0</resheader>
@@ -26,36 +26,36 @@
         <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
         <comment>This is a comment</comment>
     </data>
-                
-    There are any number of "resheader" rows that contain simple 
+
+    There are any number of "resheader" rows that contain simple
     name/value pairs.
-    
-    Each data row contains a name, and value. The row also contains a 
-    type or mimetype. Type corresponds to a .NET class that support 
-    text/value conversion through the TypeConverter architecture. 
-    Classes that don't support this are serialized and stored with the 
+
+    Each data row contains a name, and value. The row also contains a
+    type or mimetype. Type corresponds to a .NET class that support
+    text/value conversion through the TypeConverter architecture.
+    Classes that don't support this are serialized and stored with the
     mimetype set.
-    
-    The mimetype is used for serialized objects, and tells the 
-    ResXResourceReader how to depersist the object. This is currently not 
+
+    The mimetype is used for serialized objects, and tells the
+    ResXResourceReader how to depersist the object. This is currently not
     extensible. For a given mimetype the value must be set accordingly:
-    
-    Note - application/x-microsoft.net.object.binary.base64 is the format 
-    that the ResXResourceWriter will generate, however the reader can 
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format
+    that the ResXResourceWriter will generate, however the reader can
     read any of the formats listed below.
-    
+
     mimetype: application/x-microsoft.net.object.binary.base64
-    value   : The object must be serialized with 
+    value   : The object must be serialized with
             : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
             : and then encoded with base64 encoding.
     
     mimetype: application/x-microsoft.net.object.soap.base64
-    value   : The object must be serialized with 
+    value   : The object must be serialized with
             : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
             : and then encoded with base64 encoding.
 
     mimetype: application/x-microsoft.net.object.bytearray.base64
-    value   : The object must be serialized into a byte array 
+    value   : The object must be serialized into a byte array
             : using a System.ComponentModel.TypeConverter
             : and then encoded with base64 encoding.
     -->
diff --git a/SunnyUI/Controls/UITextBox.cs b/SunnyUI/Controls/UITextBox.cs
index 0f306368..3cdc497c 100644
--- a/SunnyUI/Controls/UITextBox.cs
+++ b/SunnyUI/Controls/UITextBox.cs
@@ -109,9 +109,6 @@ namespace Sunny.UI
             edit.MouseDoubleClick += Edit_MouseDoubleClick;
             edit.SizeChanged += Edit_SizeChanged;
 
-            Width = 150;
-            Height = 29;
-
             btn.Parent = this;
             btn.Visible = false;
             btn.Text = "";
@@ -135,8 +132,10 @@ namespace Sunny.UI
             bar.MouseEnter += Bar_MouseEnter;
             TextAlignment = ContentAlignment.MiddleLeft;
 
-            SizeChange();
             lastEditHeight = edit.Height;
+            Width = 150;
+            Height = 29;
+
             editCursor = Cursor;
             TextAlignmentChange += UITextBox_TextAlignmentChange;
         }
@@ -674,12 +673,8 @@ namespace Sunny.UI
             base.OnFontChanged(e);
 
             if (DefaultFontSize < 0 && edit != null)
-            {
                 edit.Font = this.Font;
-                edit.Invalidate();
-            }
 
-            SizeChange();
             Invalidate();
         }
 
@@ -739,9 +734,9 @@ namespace Sunny.UI
                     NoNeedChange = false;
                 }
 
-                if (edit.Top != (Height - edit.Height) / 2)
+                if (edit.Top != (Height - edit.Height) / 2 + 1)
                 {
-                    edit.Top = (Height - edit.Height) / 2;
+                    edit.Top = (Height - edit.Height) / 2 + 1;
                 }
 
                 if (icon == null && Symbol == 0)
@@ -783,7 +778,7 @@ namespace Sunny.UI
                 int barWidth = Math.Max(ScrollBarInfo.VerticalScrollBarWidth() + 1, ScrollBarWidth);
                 bar.Top = 2;
                 bar.Width = barWidth;
-                bar.Left = Width - bar.Width - 1;
+                bar.Left = Width - bar.Width - 2;
                 bar.Height = Height - 4;
                 bar.BringToFront();