diff --git a/SunnyUI/Font/UIFontImages.cs b/SunnyUI/Font/UIFontImages.cs
index 0672dd65..4bb006a7 100644
--- a/SunnyUI/Font/UIFontImages.cs
+++ b/SunnyUI/Font/UIFontImages.cs
@@ -22,13 +22,9 @@
 ******************************************************************************/
 
 using System;
-using System.Collections.Concurrent;
-using System.Collections.Generic;
 using System.ComponentModel;
 using System.Drawing;
 using System.Drawing.Design;
-using System.Linq;
-using System.Reflection;
 using System.Windows.Forms;
 
 namespace Sunny.UI
@@ -38,13 +34,14 @@ namespace Sunny.UI
     /// </summary>
     internal partial class UIFontImages : Form, ISymbol
     {
-        private readonly ConcurrentQueue<Label> FontAwesomeV4Labels = new ConcurrentQueue<Label>();
-        private readonly ConcurrentQueue<Label> ElegantIconsLabels = new ConcurrentQueue<Label>();
-        private readonly ConcurrentQueue<Label> FontAwesomeV6SolidLabels = new ConcurrentQueue<Label>();
-        private readonly ConcurrentQueue<Label> FontAwesomeV6BrandsLabels = new ConcurrentQueue<Label>();
-        private readonly ConcurrentQueue<Label> FontAwesomeV6RegularLabels = new ConcurrentQueue<Label>();
-        private readonly ConcurrentQueue<Label> MaterialIconsLabels = new ConcurrentQueue<Label>();
-        private readonly ConcurrentQueue<Label> SearchLabels = new ConcurrentQueue<Label>();
+        private static UISymbolPanel customSymbolPanel;
+        private static UISymbolPanel fontAwesomeV4;
+        private static UISymbolPanel elegantIcons;
+        private static UISymbolPanel fontAweSomeV6Regular;
+        private static UISymbolPanel fontAweSomeV6Solid;
+        private static UISymbolPanel fontAweSomeV6Brands;
+        private static UISymbolPanel materialIcons;
+        private static UISymbolPanel searchSymbolPanel;
 
         /// <summary>
         /// 构造函数
@@ -59,247 +56,141 @@ namespace Sunny.UI
             lpV6Regular.DoubleBuffered();
             lpV6Solid.DoubleBuffered();
             lpMaterialIcons.DoubleBuffered();
+
+            customSymbolPanel = new UISymbolPanel();
+            fontAwesomeV4 = new UISymbolPanel(typeof(FontAwesomeIcons), UISymbolType.FontAwesomeV4);
+            elegantIcons = new UISymbolPanel(typeof(FontElegantIcons), UISymbolType.FontAwesomeV4);
+            fontAweSomeV6Regular = new UISymbolPanel(typeof(FontAweSomeV6Regular), UISymbolType.FontAwesomeV6Regular);
+            fontAweSomeV6Solid = new UISymbolPanel(typeof(FontAweSomeV6Solid), UISymbolType.FontAwesomeV6Solid);
+            fontAweSomeV6Brands = new UISymbolPanel(typeof(FontAweSomeV6Brands), UISymbolType.FontAwesomeV6Brands);
+            materialIcons = new UISymbolPanel(typeof(MaterialIcons), UISymbolType.MaterialIcons);
+            searchSymbolPanel = new UISymbolPanel();
+
+            customSymbolPanel.ValueChanged += CustomSymbolPanel_ValueChanged;
+            fontAwesomeV4.ValueChanged += CustomSymbolPanel_ValueChanged;
+            elegantIcons.ValueChanged += CustomSymbolPanel_ValueChanged;
+            fontAweSomeV6Brands.ValueChanged += CustomSymbolPanel_ValueChanged;
+            fontAweSomeV6Regular.ValueChanged += CustomSymbolPanel_ValueChanged;
+            fontAweSomeV6Solid.ValueChanged += CustomSymbolPanel_ValueChanged;
+            materialIcons.ValueChanged += CustomSymbolPanel_ValueChanged;
+            searchSymbolPanel.ValueChanged += CustomSymbolPanel_ValueChanged;
+        }
+
+        private void CustomSymbolPanel_ValueChanged(object sender, SymbolValue symbol)
+        {
+            SymbolType = symbol.SymbolType;
+            Symbol = ((int)symbol.SymbolType) * 100000 + symbol.Symbol;
+            DialogResult = DialogResult.OK;
+            Close();
         }
 
         private void UIFontImages_Load(object sender, EventArgs e)
         {
             AddHighFreqImage();
-            bg1.RunWorkerAsync();
-            bg2.RunWorkerAsync();
-            bg3.RunWorkerAsync();
-            bg4.RunWorkerAsync();
-            bg5.RunWorkerAsync();
-            bg6.RunWorkerAsync();
-            timer.Start();
-        }
-
-        private void timer_Tick(object sender, EventArgs e)
-        {
-            timer.Stop();
-
-            while (!FontAwesomeV4Labels.IsEmpty)
-            {
-                if (FontAwesomeV4Labels.TryDequeue(out Label lbl))
-                {
-                    lpAwesome.Controls.Add(lbl);
-                    SymbolValue symbol = (SymbolValue)lbl.Tag;
-                    toolTip.SetToolTip(lbl, symbol.ToString());
-                }
-            }
-
-            while (!ElegantIconsLabels.IsEmpty)
-            {
-                if (ElegantIconsLabels.TryDequeue(out Label lbl))
-                {
-                    lpElegant.Controls.Add(lbl);
-                    SymbolValue symbol = (SymbolValue)lbl.Tag;
-                    toolTip.SetToolTip(lbl, symbol.ToString());
-                }
-            }
-
-            while (!FontAwesomeV6SolidLabels.IsEmpty)
-            {
-                if (FontAwesomeV6SolidLabels.TryDequeue(out Label lbl))
-                {
-                    lpV6Solid.Controls.Add(lbl);
-                    SymbolValue symbol = (SymbolValue)lbl.Tag;
-                    toolTip.SetToolTip(lbl, symbol.ToString());
-                }
-            }
-
-            while (!FontAwesomeV6RegularLabels.IsEmpty)
-            {
-                if (FontAwesomeV6RegularLabels.TryDequeue(out Label lbl))
-                {
-                    lpV6Regular.Controls.Add(lbl);
-                    SymbolValue symbol = (SymbolValue)lbl.Tag;
-                    toolTip.SetToolTip(lbl, symbol.ToString());
-                }
-            }
-
-            while (!FontAwesomeV6BrandsLabels.IsEmpty)
-            {
-                if (FontAwesomeV6BrandsLabels.TryDequeue(out Label lbl))
-                {
-                    lpV6Brands.Controls.Add(lbl);
-                    SymbolValue symbol = (SymbolValue)lbl.Tag;
-                    toolTip.SetToolTip(lbl, symbol.ToString());
-                }
-            }
-
-            while (!MaterialIconsLabels.IsEmpty)
-            {
-                if (MaterialIconsLabels.TryDequeue(out Label lbl))
-                {
-                    lpMaterialIcons.Controls.Add(lbl);
-                    SymbolValue symbol = (SymbolValue)lbl.Tag;
-                    toolTip.SetToolTip(lbl, symbol.ToString());
-                }
-            }
-
-            timer.Start();
         }
 
         private void AddHighFreqImage()
         {
-            AddLabel(FontAwesomeIcons.fa_check);
-            AddLabel(FontAwesomeIcons.fa_close);
+            customSymbolPanel.RowCount = 20;
+            AddLabel(FontAwesomeIcons.fa_check, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_close, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_ellipsis_h);
-            AddLabel(FontAwesomeIcons.fa_file);
-            AddLabel(FontAwesomeIcons.fa_file_o);
-            AddLabel(FontAwesomeIcons.fa_save);
-            AddLabel(FontAwesomeIcons.fa_folder);
-            AddLabel(FontAwesomeIcons.fa_folder_o);
-            AddLabel(FontAwesomeIcons.fa_folder_open);
-            AddLabel(FontAwesomeIcons.fa_folder_open_o);
+            AddLabel(FontAwesomeIcons.fa_ellipsis_h, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_file, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_file_o, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_save, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_folder, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_folder_o, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_folder_open, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_folder_open_o, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_plus);
-            AddLabel(FontAwesomeIcons.fa_edit);
-            AddLabel(FontAwesomeIcons.fa_minus);
-            AddLabel(FontAwesomeIcons.fa_refresh);
+            AddLabel(FontAwesomeIcons.fa_plus, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_edit, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_minus, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_refresh, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_exclamation);
-            AddLabel(FontAwesomeIcons.fa_exclamation_circle);
-            AddLabel(FontAwesomeIcons.fa_warning);
-            AddLabel(FontAwesomeIcons.fa_info);
+            AddLabel(FontAwesomeIcons.fa_exclamation, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_exclamation_circle, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_warning, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_info, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_info_circle);
-            AddLabel(FontAwesomeIcons.fa_check_circle);
-            AddLabel(FontAwesomeIcons.fa_check_circle_o);
-            AddLabel(FontAwesomeIcons.fa_times_circle);
-            AddLabel(FontAwesomeIcons.fa_times_circle_o);
-            AddLabel(FontAwesomeIcons.fa_question);
-            AddLabel(FontAwesomeIcons.fa_question_circle);
-            AddLabel(FontAwesomeIcons.fa_question_circle_o);
-            AddLabel(FontAwesomeIcons.fa_ban);
+            AddLabel(FontAwesomeIcons.fa_info_circle, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_check_circle, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_check_circle_o, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_times_circle, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_times_circle_o, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_question, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_question_circle, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_question_circle_o, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_ban, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_toggle_left);
-            AddLabel(FontAwesomeIcons.fa_toggle_right);
-            AddLabel(FontAwesomeIcons.fa_toggle_up);
-            AddLabel(FontAwesomeIcons.fa_toggle_down);
+            AddLabel(FontAwesomeIcons.fa_toggle_left, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_toggle_right, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_toggle_up, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_toggle_down, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_lock);
-            AddLabel(FontAwesomeIcons.fa_unlock);
-            AddLabel(FontAwesomeIcons.fa_unlock_alt);
+            AddLabel(FontAwesomeIcons.fa_lock, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_unlock, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_unlock_alt, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_cog);
-            AddLabel(FontAwesomeIcons.fa_cogs);
+            AddLabel(FontAwesomeIcons.fa_cog, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_cogs, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_window_minimize);
-            AddLabel(FontAwesomeIcons.fa_window_maximize);
-            AddLabel(FontAwesomeIcons.fa_window_restore);
-            AddLabel(FontAwesomeIcons.fa_window_close);
-            AddLabel(FontAwesomeIcons.fa_window_close_o);
+            AddLabel(FontAwesomeIcons.fa_window_minimize, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_window_maximize, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_window_restore, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_window_close, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_window_close_o, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_user);
-            AddLabel(FontAwesomeIcons.fa_user_o);
-            AddLabel(FontAwesomeIcons.fa_user_circle);
-            AddLabel(FontAwesomeIcons.fa_user_circle_o);
-            AddLabel(FontAwesomeIcons.fa_user_plus);
-            AddLabel(FontAwesomeIcons.fa_user_times);
+            AddLabel(FontAwesomeIcons.fa_user, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_user_o, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_user_circle, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_user_circle_o, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_user_plus, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_user_times, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_tag);
-            AddLabel(FontAwesomeIcons.fa_tags);
+            AddLabel(FontAwesomeIcons.fa_tag, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_tags, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_plus_circle);
-            AddLabel(FontAwesomeIcons.fa_plus_square);
-            AddLabel(FontAwesomeIcons.fa_plus_square_o);
+            AddLabel(FontAwesomeIcons.fa_plus_circle, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_plus_square, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_plus_square_o, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_minus_circle);
-            AddLabel(FontAwesomeIcons.fa_minus_square);
-            AddLabel(FontAwesomeIcons.fa_minus_square_o);
+            AddLabel(FontAwesomeIcons.fa_minus_circle, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_minus_square, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_minus_square_o, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_search);
-            AddLabel(FontAwesomeIcons.fa_search_minus);
-            AddLabel(FontAwesomeIcons.fa_search_plus);
+            AddLabel(FontAwesomeIcons.fa_search, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_search_minus, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_search_plus, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_bar_chart);
-            AddLabel(FontAwesomeIcons.fa_area_chart);
-            AddLabel(FontAwesomeIcons.fa_line_chart);
-            AddLabel(FontAwesomeIcons.fa_pie_chart);
-            AddLabel(FontAwesomeIcons.fa_photo);
+            AddLabel(FontAwesomeIcons.fa_bar_chart, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_area_chart, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_line_chart, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_pie_chart, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_photo, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_power_off);
-            AddLabel(FontAwesomeIcons.fa_print);
-            AddLabel(FontAwesomeIcons.fa_bars);
+            AddLabel(FontAwesomeIcons.fa_power_off, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_print, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_bars, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_sign_in);
-            AddLabel(FontAwesomeIcons.fa_sign_out);
+            AddLabel(FontAwesomeIcons.fa_sign_in, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_sign_out, UISymbolType.FontAwesomeV4);
 
-            AddLabel(FontAwesomeIcons.fa_play);
-            AddLabel(FontAwesomeIcons.fa_pause);
-            AddLabel(FontAwesomeIcons.fa_stop);
-            AddLabel(FontAwesomeIcons.fa_fast_backward);
-            AddLabel(FontAwesomeIcons.fa_backward);
-            AddLabel(FontAwesomeIcons.fa_forward);
-            AddLabel(FontAwesomeIcons.fa_fast_forward);
-            AddLabel(FontAwesomeIcons.fa_eject);
+            AddLabel(FontAwesomeIcons.fa_play, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_pause, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_stop, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_fast_backward, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_backward, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_forward, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_fast_forward, UISymbolType.FontAwesomeV4);
+            AddLabel(FontAwesomeIcons.fa_eject, UISymbolType.FontAwesomeV4);
+            customSymbolPanel.Invalidate();
         }
 
-        private void AddLabel(int icon)
+        private void AddLabel(int icon, UISymbolType symbolType)
         {
-            Label lbl = CreateLabel(icon, UISymbolType.FontAwesomeV4);
-            lpCustom.Controls.Add(lbl);
-            SymbolValue symbol = (SymbolValue)lbl.Tag;
-            toolTip.SetToolTip(lbl, symbol.ToString());
-        }
-
-        private Label CreateLabel(int icon, UISymbolType symbolType)
-        {
-            Label lbl = new Label
-            {
-                AutoSize = false,
-                Size = new Size(32, 32),
-                ForeColor = UIColor.Blue,
-                Image = FontImageHelper.CreateImage(icon + (int)symbolType * 100000, 28, UIFontColor.Primary),
-                ImageAlign = ContentAlignment.MiddleCenter,
-                TextAlign = ContentAlignment.MiddleLeft,
-                Margin = new Padding(2)
-            };
-
-            lbl.DoubleBuffered();
-            lbl.Click += lbl_DoubleClick;
-            lbl.MouseEnter += Lbl_MouseEnter;
-            lbl.MouseLeave += Lbl_MouseLeave;
-            lbl.Tag = new SymbolValue() { Symbol = icon, SymbolType = symbolType };
-            return lbl;
-        }
-
-        private Label CreateLabel(string name, int icon, UISymbolType symbolType)
-        {
-            Label lbl = new Label
-            {
-                AutoSize = false,
-                Size = new Size(32, 32),
-                ForeColor = UIColor.Blue,
-                Image = FontImageHelper.CreateImage(icon + (int)symbolType * 100000, 28, UIFontColor.Primary),
-                ImageAlign = ContentAlignment.MiddleCenter,
-                TextAlign = ContentAlignment.MiddleLeft,
-                Margin = new Padding(2)
-            };
-
-            lbl.Click += lbl_DoubleClick;
-            lbl.MouseEnter += Lbl_MouseEnter;
-            lbl.MouseLeave += Lbl_MouseLeave;
-            lbl.Tag = new SymbolValue() { Name = name.Replace("fa_", "").Replace("ma_", ""), Symbol = icon, SymbolType = symbolType };
-            return lbl;
-        }
-
-        private void Lbl_MouseLeave(object sender, EventArgs e)
-        {
-            Label lbl = (Label)sender;
-            SymbolValue symbol = (SymbolValue)lbl.Tag;
-            if (symbol.IsRed) return;
-            lbl.Image = FontImageHelper.CreateImage(symbol.Symbol + (int)symbol.SymbolType * 100000, 28, UIFontColor.Primary);
-        }
-
-        private void Lbl_MouseEnter(object sender, EventArgs e)
-        {
-            Label lbl = (Label)sender;
-            SymbolValue symbol = (SymbolValue)lbl.Tag;
-            if (symbol.IsRed) return;
-            lbl.Image = FontImageHelper.CreateImage(symbol.Symbol + (int)symbol.SymbolType * 100000, 28, UIColor.Blue);
+            customSymbolPanel.Add(new SymbolValue(icon, "", symbolType));
         }
 
         /// <summary>
@@ -324,105 +215,74 @@ namespace Sunny.UI
         /// </summary>
         public int SymbolRotate { get; set; } = 0;
 
-        private void lbl_DoubleClick(object sender, EventArgs e)
-        {
-            if (sender is Label lbl)
-            {
-                SymbolValue symbol = (SymbolValue)lbl.Tag;
-                SymbolType = symbol.SymbolType;
-                Symbol = ((int)symbol.SymbolType) * 100000 + symbol.Symbol;
-                DialogResult = DialogResult.OK;
-                Close();
-            }
-        }
-
-        private void LoadLabels(Type type, ConcurrentQueue<Label> labels, UISymbolType symbolType, string filter = "")
-        {
-            ConcurrentDictionary<int, FieldInfo> dic = new ConcurrentDictionary<int, FieldInfo>();
-            foreach (var fieldInfo in type.GetFields())
-            {
-                var obj = fieldInfo.GetRawConstantValue();
-                if (obj is int value)
-                {
-                    dic.TryAdd(value, fieldInfo);
-                }
-            }
-
-            List<int> list = dic.Keys.ToList();
-            list.Sort();
-
-            foreach (var value in list)
-            {
-                if (filter == "")
-                    labels.Enqueue(CreateLabel(dic[value].Name, value, symbolType));
-                else if (dic[value].Name.ToUpper().Contains(filter.ToUpper()))
-                    labels.Enqueue(CreateLabel(dic[value].Name, value, symbolType));
-            }
-
-            dic.Clear();
-        }
-
-        private void bg_DoWork(object sender, DoWorkEventArgs e)
-        {
-            //public const int FontAwesomeV4Count = 786; 
-            LoadLabels(typeof(FontAwesomeIcons), FontAwesomeV4Labels, UISymbolType.FontAwesomeV4);
-        }
-
-        private void bg2_DoWork(object sender, DoWorkEventArgs e)
-        {
-            //public const int ElegantIconsCount = 360;
-            LoadLabels(typeof(FontElegantIcons), ElegantIconsLabels, UISymbolType.FontAwesomeV4);
-        }
-
-        private void bg3_DoWork(object sender, DoWorkEventArgs e)
-        {
-            LoadLabels(typeof(FontAweSomeV6Brands), FontAwesomeV6BrandsLabels, UISymbolType.FontAwesomeV6Brands);
-        }
-
-        private void bg4_DoWork(object sender, DoWorkEventArgs e)
-        {
-            LoadLabels(typeof(FontAweSomeV6Regular), FontAwesomeV6RegularLabels, UISymbolType.FontAwesomeV6Regular);
-        }
-
-        private void bg5_DoWork(object sender, DoWorkEventArgs e)
-        {
-            LoadLabels(typeof(FontAweSomeV6Solid), FontAwesomeV6SolidLabels, UISymbolType.FontAwesomeV6Solid);
-        }
-
-        private void bg6_DoWork(object sender, DoWorkEventArgs e)
-        {
-            LoadLabels(typeof(MaterialIcons), MaterialIconsLabels, UISymbolType.MaterialIcons);
-        }
-
         private void button1_Click(object sender, EventArgs e)
         {
-            if (textBox1.Text.IsNullOrEmpty()) return;
-            lblResult.Controls.Clear();
-            SearchLabels.Clear();
+            string filter = textBox1.Text.Trim();
+            fontAwesomeV4.Filter = filter;
+            elegantIcons.Filter = filter;
+            fontAweSomeV6Regular.Filter = filter;
+            fontAweSomeV6Solid.Filter = filter;
+            fontAweSomeV6Brands.Filter = filter;
+            materialIcons.Filter = filter;
+            searchSymbolPanel.Clear();
+            if (filter.IsNullOrEmpty()) return;
 
-            LoadLabels(typeof(FontAwesomeIcons), SearchLabels, UISymbolType.FontAwesomeV4, textBox1.Text);
-            LoadLabels(typeof(FontElegantIcons), SearchLabels, UISymbolType.FontAwesomeV4, textBox1.Text);
-            LoadLabels(typeof(FontAweSomeV6Brands), SearchLabels, UISymbolType.FontAwesomeV6Brands, textBox1.Text);
-            LoadLabels(typeof(FontAweSomeV6Regular), SearchLabels, UISymbolType.FontAwesomeV6Regular, textBox1.Text);
-            LoadLabels(typeof(FontAweSomeV6Solid), SearchLabels, UISymbolType.FontAwesomeV6Solid, textBox1.Text);
-            LoadLabels(typeof(MaterialIcons), SearchLabels, UISymbolType.MaterialIcons, textBox1.Text);
-
-            label1.Text = SearchLabels.Count + " results.";
-            while (!SearchLabels.IsEmpty)
+            for (int i = 0; i < fontAwesomeV4.SymbolCount; i++)
             {
-                if (SearchLabels.TryDequeue(out Label lbl))
-                {
-                    lblResult.Controls.Add(lbl);
-                    SymbolValue symbol = (SymbolValue)lbl.Tag;
-                    toolTip.SetToolTip(lbl, symbol.ToString());
-                }
+                var value = fontAwesomeV4.Get(i);
+                if (value.Name.ToUpper().Contains(filter.ToUpper()))
+                    searchSymbolPanel.Add(value);
             }
 
+            for (int i = 0; i < elegantIcons.SymbolCount; i++)
+            {
+                var value = elegantIcons.Get(i);
+                if (value.Name.ToUpper().Contains(filter.ToUpper()))
+                    searchSymbolPanel.Add(value);
+            }
+
+            for (int i = 0; i < fontAweSomeV6Regular.SymbolCount; i++)
+            {
+                var value = fontAweSomeV6Regular.Get(i);
+                if (value.Name.ToUpper().Contains(filter.ToUpper()))
+                    searchSymbolPanel.Add(value);
+            }
+
+            for (int i = 0; i < fontAweSomeV6Solid.SymbolCount; i++)
+            {
+                var value = fontAweSomeV6Solid.Get(i);
+                if (value.Name.ToUpper().Contains(filter.ToUpper()))
+                    searchSymbolPanel.Add(value);
+            }
+
+            for (int i = 0; i < fontAweSomeV6Brands.SymbolCount; i++)
+            {
+                var value = fontAweSomeV6Brands.Get(i);
+                if (value.Name.ToUpper().Contains(filter.ToUpper()))
+                    searchSymbolPanel.Add(value);
+            }
+
+            for (int i = 0; i < materialIcons.SymbolCount; i++)
+            {
+                var value = materialIcons.Get(i);
+                if (value.Name.ToUpper().Contains(filter.ToUpper()))
+                    searchSymbolPanel.Add(value);
+            }
+
+            searchSymbolPanel.Invalidate();
             tabControl1.SelectedTab = tabPage7;
         }
 
         private void UIFontImages_Shown(object sender, EventArgs e)
         {
+            lpCustom.Controls.Add(customSymbolPanel);
+            lpV6Solid.Controls.Add(fontAweSomeV6Solid);
+            lpV6Regular.Controls.Add(fontAweSomeV6Regular);
+            lpV6Brands.Controls.Add(fontAweSomeV6Brands);
+            lpElegant.Controls.Add(elegantIcons);
+            lpMaterialIcons.Controls.Add(materialIcons);
+            lblResult.Controls.Add(searchSymbolPanel);
+            lpAwesome.Controls.Add(fontAwesomeV4);
             textBox1.Focus();
         }
 
diff --git a/SunnyUI/Font/UIFontImages.designer.cs b/SunnyUI/Font/UIFontImages.designer.cs
index 9ed745e4..85f165b4 100644
--- a/SunnyUI/Font/UIFontImages.designer.cs
+++ b/SunnyUI/Font/UIFontImages.designer.cs
@@ -46,19 +46,12 @@
             lpMaterialIcons = new System.Windows.Forms.FlowLayoutPanel();
             tabPage7 = new System.Windows.Forms.TabPage();
             lblResult = new System.Windows.Forms.FlowLayoutPanel();
-            bg1 = new System.ComponentModel.BackgroundWorker();
-            timer = new System.Windows.Forms.Timer(components);
             toolTip = new System.Windows.Forms.ToolTip(components);
-            bg2 = new System.ComponentModel.BackgroundWorker();
-            bg3 = new System.ComponentModel.BackgroundWorker();
-            bg4 = new System.ComponentModel.BackgroundWorker();
-            bg5 = new System.ComponentModel.BackgroundWorker();
             panel1 = new System.Windows.Forms.Panel();
             label2 = new System.Windows.Forms.Label();
             label1 = new System.Windows.Forms.Label();
             button1 = new System.Windows.Forms.Button();
             textBox1 = new System.Windows.Forms.TextBox();
-            bg6 = new System.ComponentModel.BackgroundWorker();
             tabControl1.SuspendLayout();
             tabPage1.SuspendLayout();
             tabPage5.SuspendLayout();
@@ -86,7 +79,7 @@
             tabControl1.Location = new System.Drawing.Point(0, 81);
             tabControl1.Name = "tabControl1";
             tabControl1.SelectedIndex = 0;
-            tabControl1.Size = new System.Drawing.Size(900, 610);
+            tabControl1.Size = new System.Drawing.Size(820, 600);
             tabControl1.TabIndex = 0;
             // 
             // tabPage1
@@ -95,7 +88,7 @@
             tabPage1.Location = new System.Drawing.Point(4, 28);
             tabPage1.Name = "tabPage1";
             tabPage1.Padding = new System.Windows.Forms.Padding(3);
-            tabPage1.Size = new System.Drawing.Size(892, 578);
+            tabPage1.Size = new System.Drawing.Size(812, 568);
             tabPage1.TabIndex = 0;
             tabPage1.Text = "Custom";
             tabPage1.UseVisualStyleBackColor = true;
@@ -106,7 +99,7 @@
             lpCustom.Dock = System.Windows.Forms.DockStyle.Fill;
             lpCustom.Location = new System.Drawing.Point(3, 3);
             lpCustom.Name = "lpCustom";
-            lpCustom.Size = new System.Drawing.Size(886, 572);
+            lpCustom.Size = new System.Drawing.Size(806, 562);
             lpCustom.TabIndex = 1;
             // 
             // tabPage5
@@ -115,7 +108,7 @@
             tabPage5.Location = new System.Drawing.Point(4, 28);
             tabPage5.Name = "tabPage5";
             tabPage5.Padding = new System.Windows.Forms.Padding(3);
-            tabPage5.Size = new System.Drawing.Size(892, 578);
+            tabPage5.Size = new System.Drawing.Size(806, 568);
             tabPage5.TabIndex = 4;
             tabPage5.Text = "FontAwesome V6 Solid";
             tabPage5.UseVisualStyleBackColor = true;
@@ -127,7 +120,7 @@
             lpV6Solid.ForeColor = System.Drawing.Color.FromArgb(64, 158, 255);
             lpV6Solid.Location = new System.Drawing.Point(3, 3);
             lpV6Solid.Name = "lpV6Solid";
-            lpV6Solid.Size = new System.Drawing.Size(886, 572);
+            lpV6Solid.Size = new System.Drawing.Size(800, 562);
             lpV6Solid.TabIndex = 3;
             // 
             // tabPage6
@@ -136,7 +129,7 @@
             tabPage6.Location = new System.Drawing.Point(4, 28);
             tabPage6.Name = "tabPage6";
             tabPage6.Padding = new System.Windows.Forms.Padding(3);
-            tabPage6.Size = new System.Drawing.Size(892, 578);
+            tabPage6.Size = new System.Drawing.Size(806, 568);
             tabPage6.TabIndex = 5;
             tabPage6.Text = "V6 Regular";
             tabPage6.UseVisualStyleBackColor = true;
@@ -148,7 +141,7 @@
             lpV6Regular.ForeColor = System.Drawing.Color.FromArgb(64, 158, 255);
             lpV6Regular.Location = new System.Drawing.Point(3, 3);
             lpV6Regular.Name = "lpV6Regular";
-            lpV6Regular.Size = new System.Drawing.Size(886, 572);
+            lpV6Regular.Size = new System.Drawing.Size(800, 562);
             lpV6Regular.TabIndex = 3;
             // 
             // tabPage4
@@ -157,7 +150,7 @@
             tabPage4.Location = new System.Drawing.Point(4, 28);
             tabPage4.Name = "tabPage4";
             tabPage4.Padding = new System.Windows.Forms.Padding(3);
-            tabPage4.Size = new System.Drawing.Size(892, 578);
+            tabPage4.Size = new System.Drawing.Size(806, 568);
             tabPage4.TabIndex = 3;
             tabPage4.Text = "V6 Brands";
             tabPage4.UseVisualStyleBackColor = true;
@@ -169,7 +162,7 @@
             lpV6Brands.ForeColor = System.Drawing.Color.FromArgb(64, 158, 255);
             lpV6Brands.Location = new System.Drawing.Point(3, 3);
             lpV6Brands.Name = "lpV6Brands";
-            lpV6Brands.Size = new System.Drawing.Size(886, 572);
+            lpV6Brands.Size = new System.Drawing.Size(800, 562);
             lpV6Brands.TabIndex = 3;
             // 
             // tabPage2
@@ -178,7 +171,7 @@
             tabPage2.Location = new System.Drawing.Point(4, 28);
             tabPage2.Name = "tabPage2";
             tabPage2.Padding = new System.Windows.Forms.Padding(3);
-            tabPage2.Size = new System.Drawing.Size(892, 578);
+            tabPage2.Size = new System.Drawing.Size(806, 568);
             tabPage2.TabIndex = 1;
             tabPage2.Text = "FontAwesome V4";
             tabPage2.UseVisualStyleBackColor = true;
@@ -190,7 +183,7 @@
             lpAwesome.ForeColor = System.Drawing.Color.FromArgb(64, 158, 255);
             lpAwesome.Location = new System.Drawing.Point(3, 3);
             lpAwesome.Name = "lpAwesome";
-            lpAwesome.Size = new System.Drawing.Size(886, 572);
+            lpAwesome.Size = new System.Drawing.Size(800, 562);
             lpAwesome.TabIndex = 1;
             // 
             // tabPage3
@@ -199,7 +192,7 @@
             tabPage3.Location = new System.Drawing.Point(4, 28);
             tabPage3.Name = "tabPage3";
             tabPage3.Padding = new System.Windows.Forms.Padding(3);
-            tabPage3.Size = new System.Drawing.Size(892, 578);
+            tabPage3.Size = new System.Drawing.Size(806, 568);
             tabPage3.TabIndex = 2;
             tabPage3.Text = "ElegantIcons";
             tabPage3.UseVisualStyleBackColor = true;
@@ -211,7 +204,7 @@
             lpElegant.ForeColor = System.Drawing.Color.FromArgb(64, 158, 255);
             lpElegant.Location = new System.Drawing.Point(3, 3);
             lpElegant.Name = "lpElegant";
-            lpElegant.Size = new System.Drawing.Size(886, 572);
+            lpElegant.Size = new System.Drawing.Size(800, 562);
             lpElegant.TabIndex = 2;
             // 
             // tsMaterialIcons
@@ -220,7 +213,7 @@
             tsMaterialIcons.Location = new System.Drawing.Point(4, 28);
             tsMaterialIcons.Name = "tsMaterialIcons";
             tsMaterialIcons.Padding = new System.Windows.Forms.Padding(3);
-            tsMaterialIcons.Size = new System.Drawing.Size(892, 578);
+            tsMaterialIcons.Size = new System.Drawing.Size(806, 568);
             tsMaterialIcons.TabIndex = 7;
             tsMaterialIcons.Text = "MaterialIcons";
             tsMaterialIcons.UseVisualStyleBackColor = true;
@@ -232,7 +225,7 @@
             lpMaterialIcons.ForeColor = System.Drawing.Color.FromArgb(64, 158, 255);
             lpMaterialIcons.Location = new System.Drawing.Point(3, 3);
             lpMaterialIcons.Name = "lpMaterialIcons";
-            lpMaterialIcons.Size = new System.Drawing.Size(886, 572);
+            lpMaterialIcons.Size = new System.Drawing.Size(800, 562);
             lpMaterialIcons.TabIndex = 3;
             // 
             // tabPage7
@@ -241,7 +234,7 @@
             tabPage7.Location = new System.Drawing.Point(4, 28);
             tabPage7.Name = "tabPage7";
             tabPage7.Padding = new System.Windows.Forms.Padding(3);
-            tabPage7.Size = new System.Drawing.Size(892, 578);
+            tabPage7.Size = new System.Drawing.Size(806, 568);
             tabPage7.TabIndex = 6;
             tabPage7.Text = "Search result";
             tabPage7.UseVisualStyleBackColor = true;
@@ -253,33 +246,9 @@
             lblResult.ForeColor = System.Drawing.Color.FromArgb(64, 158, 255);
             lblResult.Location = new System.Drawing.Point(3, 3);
             lblResult.Name = "lblResult";
-            lblResult.Size = new System.Drawing.Size(886, 572);
+            lblResult.Size = new System.Drawing.Size(800, 562);
             lblResult.TabIndex = 3;
             // 
-            // bg1
-            // 
-            bg1.DoWork += bg_DoWork;
-            // 
-            // timer
-            // 
-            timer.Tick += timer_Tick;
-            // 
-            // bg2
-            // 
-            bg2.DoWork += bg2_DoWork;
-            // 
-            // bg3
-            // 
-            bg3.DoWork += bg3_DoWork;
-            // 
-            // bg4
-            // 
-            bg4.DoWork += bg4_DoWork;
-            // 
-            // bg5
-            // 
-            bg5.DoWork += bg5_DoWork;
-            // 
             // panel1
             // 
             panel1.Controls.Add(label2);
@@ -289,7 +258,7 @@
             panel1.Dock = System.Windows.Forms.DockStyle.Top;
             panel1.Location = new System.Drawing.Point(0, 0);
             panel1.Name = "panel1";
-            panel1.Size = new System.Drawing.Size(900, 81);
+            panel1.Size = new System.Drawing.Size(820, 81);
             panel1.TabIndex = 0;
             // 
             // label2
@@ -334,14 +303,10 @@
             textBox1.TabIndex = 0;
             textBox1.KeyDown += textBox1_KeyDown;
             // 
-            // bg6
-            // 
-            bg6.DoWork += bg6_DoWork;
-            // 
             // UIFontImages
             // 
             AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
-            ClientSize = new System.Drawing.Size(900, 691);
+            ClientSize = new System.Drawing.Size(820, 681);
             Controls.Add(tabControl1);
             Controls.Add(panel1);
             Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point);
@@ -373,8 +338,6 @@
         private System.Windows.Forms.FlowLayoutPanel lpAwesome;
         private System.Windows.Forms.TabPage tabPage3;
         private System.Windows.Forms.FlowLayoutPanel lpElegant;
-        private System.ComponentModel.BackgroundWorker bg1;
-        private System.Windows.Forms.Timer timer;
         private System.Windows.Forms.ToolTip toolTip;
         private System.Windows.Forms.TabPage tabPage4;
         private System.Windows.Forms.TabPage tabPage5;
@@ -382,10 +345,6 @@
         private System.Windows.Forms.FlowLayoutPanel lpV6Brands;
         private System.Windows.Forms.FlowLayoutPanel lpV6Solid;
         private System.Windows.Forms.FlowLayoutPanel lpV6Regular;
-        private System.ComponentModel.BackgroundWorker bg2;
-        private System.ComponentModel.BackgroundWorker bg3;
-        private System.ComponentModel.BackgroundWorker bg4;
-        private System.ComponentModel.BackgroundWorker bg5;
         private System.Windows.Forms.Panel panel1;
         private System.Windows.Forms.Button button1;
         private System.Windows.Forms.TextBox textBox1;
@@ -423,6 +382,5 @@
 */
         private System.Windows.Forms.TabPage tsMaterialIcons;
         private System.Windows.Forms.FlowLayoutPanel lpMaterialIcons;
-        private System.ComponentModel.BackgroundWorker bg6;
     }
 }
\ No newline at end of file
diff --git a/SunnyUI/Font/UIFontImages.resx b/SunnyUI/Font/UIFontImages.resx
index 8989fd17..fd17d619 100644
--- a/SunnyUI/Font/UIFontImages.resx
+++ b/SunnyUI/Font/UIFontImages.resx
@@ -117,28 +117,7 @@
   <resheader name="writer">
     <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
-  <metadata name="bg1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
-    <value>17, 17</value>
-  </metadata>
-  <metadata name="timer.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
-    <value>384, 17</value>
-  </metadata>
   <metadata name="toolTip.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
     <value>467, 17</value>
   </metadata>
-  <metadata name="bg2.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
-    <value>84, 17</value>
-  </metadata>
-  <metadata name="bg3.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
-    <value>159, 17</value>
-  </metadata>
-  <metadata name="bg4.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
-    <value>234, 17</value>
-  </metadata>
-  <metadata name="bg5.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
-    <value>644, 26</value>
-  </metadata>
-  <metadata name="bg6.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
-    <value>772, 17</value>
-  </metadata>
 </root>
\ No newline at end of file
diff --git a/SunnyUI/Font/UISymbolPanel.cs b/SunnyUI/Font/UISymbolPanel.cs
index d6aa5115..13b3dce8 100644
--- a/SunnyUI/Font/UISymbolPanel.cs
+++ b/SunnyUI/Font/UISymbolPanel.cs
@@ -1,7 +1,10 @@
 using System;
+using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Drawing;
+using System.Linq;
+using System.Reflection;
 using System.Windows.Forms;
 
 namespace Sunny.UI
@@ -14,6 +17,38 @@ namespace Sunny.UI
             SetStyleFlags();
         }
 
+        public UISymbolPanel(Type fonttype, UISymbolType symbolType, int columnCount = 24)
+        {
+            SetStyleFlags();
+            LoadFont(fonttype, symbolType, columnCount);
+        }
+
+        public void LoadFont(Type fonttype, UISymbolType symbolType, int columnCount = 24)
+        {
+            ColumnCount = columnCount;
+            ConcurrentDictionary<int, FieldInfo> dic = new ConcurrentDictionary<int, FieldInfo>();
+            foreach (var fieldInfo in fonttype.GetFields())
+            {
+                var obj = fieldInfo.GetRawConstantValue();
+                if (obj is int value)
+                {
+                    dic.TryAdd(value, fieldInfo);
+                }
+            }
+
+            RowCount = dic.Count / ColumnCount + 1;
+
+            List<int> list = dic.Keys.ToList();
+            list.Sort();
+            for (int i = 0; i < GridCount; i++)
+            {
+                if (i >= list.Count) break;
+                Add(new SymbolValue(list[i], dic[list[i]].Name.Replace("fa_", "").Replace("ma_", ""), symbolType));
+            }
+
+            dic.Clear();
+        }
+
         protected void SetStyleFlags(bool supportTransparent = true, bool selectable = true, bool resizeRedraw = false)
         {
             SetStyle(ControlStyles.AllPaintingInWmPaint, true);
@@ -86,7 +121,7 @@ namespace Sunny.UI
                 Rectangle rect = new Rectangle(ic * symbolSize, ir * symbolSize, symbolSize, symbolSize);
                 SymbolValue symbol = Symbols[i];
                 Color color = Color.Black;
-                if (Filter.IsValid() && symbol.Name.Contains(Filter)) color = Color.Purple;
+                if (Filter.IsValid() && symbol.Name.ToUpper().Contains(Filter.ToUpper())) color = Color.Purple;
                 if (i == SelectedIndex) color = Color.Red;
                 e.Graphics.DrawFontImage(symbol.Value, 28, color, rect);
             }
@@ -122,6 +157,13 @@ namespace Sunny.UI
 
         private readonly List<SymbolValue> Symbols = new List<SymbolValue>();
 
+        public int SymbolCount => Symbols.Count;
+
+        public SymbolValue Get(int index)
+        {
+            return Symbols[index];
+        }
+
         public void Clear()
         {
             Symbols.Clear();
@@ -129,7 +171,8 @@ namespace Sunny.UI
 
         public void Add(SymbolValue symbol)
         {
-            if (Symbols.Count >= GridCount) return;
+            if (Symbols.Count >= GridCount)
+                RowCount++;
             Symbols.Add(symbol);
         }
 
@@ -164,7 +207,8 @@ namespace Sunny.UI
 
         public event OnSymbolValueChanged ValueChanged;
 
-        public string Filter { get; set; }
+        private string filter = "";
+        public string Filter { get => filter; set { filter = value; Invalidate(); } }
     }
 
     public delegate void OnSymbolValueChanged(object sender, SymbolValue value);