博客开通有一阵了,就是没有时间写,遗憾啊。!
      这几天做了个排序的自定义控件,在listbox item里放是button 并支持图标的交替变换
效果如下:

把代码贴上:
  1.   1using System;  
  2.   2using System.Collections.Generic;  
  3.   3using System.Collections;  
  4.   4using System.Text;  
  5.   5using System.ComponentModel;  
  6.   6using System.Windows.Forms;  
  7.   7using System.Drawing;  
  8.   8using System.Drawing.Text;  
  9.   9using System.Data;  
  10.  
  11. namespace SQLAnalysis  
  12. {  
  13.     public class ListBoxEx : ListBox  
  14.     {  
  15.         public ListBoxEx()  
  16.         {  
  17.             this.DrawMode = DrawMode.OwnerDrawFixed;  
  18.             btnList = new List<Button>();  
  19.         }  
  20.         public override DrawMode DrawMode  
  21.         {  
  22.             get  
  23.             {  
  24.                 return DrawMode.OwnerDrawFixed;  
  25.             }  
  26.             set  
  27.             {  
  28.                 base.DrawMode = DrawMode.OwnerDrawFixed;  
  29.             }  
  30.         }  
  31.          
  32.         protected override void OnResize(EventArgs e)  
  33.         {  
  34.             base.OnResize(e);  
  35.             this.Refresh();  
  36.         }  
  37.  
  38.  
  39.  
  40.  
  41.         public Button FindItemButton(int index)  
  42.         {  
  43.               
  44.         // return this.Controls.Find(this.Name + "$ItemComboBox" + index.ToString(), true)[0];  
  45.             if (index >= btnList.Count)  
  46.                 return null;  
  47.             return btnList[index];  
  48.              
  49.         }  
  50.  
  51.         /// <summary> 
  52.         /// 提供删除item项  
  53.         /// </summary> 
  54.         /// <param name="index"></param> 
  55.         public void RemoveItem(int index)  
  56.         {  
  57.             this.Items.RemoveAt(index);  
  58.             btnList[index].Parent = null;  
  59.             btnList[index] = null;  
  60.             //btnList[index].Dispose();  
  61.               
  62.             btnList.RemoveAt(index);  
  63.             this.Refresh();  
  64.         }  
  65.         /// <summary> 
  66.         /// 提供移动item项  
  67.         /// </summary> 
  68.         /// <param name="offset"></param> 
  69.         public void MoveItem(int offset)  
  70.         {  
  71.               
  72.             int index = this.SelectedIndex + offset;  
  73.             if (index > -1 && index < this.Items.Count)  
  74.             {  
  75.                 int oldSelectedIndex = this.SelectedIndex;  
  76.                 Object item = this.SelectedItem;  
  77.                 this.Items.RemoveAt(oldSelectedIndex);  
  78.                 this.Items.Insert(index, item);  
  79.                 Button btn = btnList[oldSelectedIndex];  
  80.                 btnList.RemoveAt(oldSelectedIndex);  
  81.                 btnList.Insert(index, btn);  
  82.  
  83.                 this.Refresh();  
  84.             }  
  85.             else  
  86.             {  
  87.                 MessageBox.Show("不是可用的移动矢量");  
  88.  
  89.             }  
  90.  
  91.         }  
  92.  
  93.         private ToggleItem GetNexttoggleItem(ToggleItem tog)  
  94.         {  
  95.             int index = -1;  
  96.             for (int i = 0; i < ToggleItemList.Count; i++)  
  97.             {  
  98.                 ToggleItem item =(ToggleItem)ToggleItemList[i];  
  99.                 if (item.Tag == tog.Tag)  
  100.                 {  
  101.                     iindex = i;  
  102.                     break;  
  103.                 }  
  104.             }  
  105.             return ((ToggleItem)ToggleItemList[(index + 1) % ToggleItemList.Count]);  
  106.         }  
  107.         private List<ToggleItem> toggleItemList ;//List<ToggleItem> toggleItemList = new List<ToggleItem>();  
  108.         [Bindable(false), Browsable(false)]  
  109.         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]     
  110.         public List<ToggleItem> ToggleItemList  
  111.         {  
  112.             get  
  113.             {  
  114.                 if (toggleItemList == null)  
  115.                     toggleItemList = new List<ToggleItem>();  
  116.                 return toggleItemList;  
  117.             }  
  118.  
  119.             set  
  120.             {  
  121.                 if (toggleItemList == null)  
  122.                     toggleItemList = new List<ToggleItem>();  
  123.                 toggleItemList = value;  
  124.             }  
  125.         }  
  126.  
  127.         //主要重写事件  
  128.         protected override void OnDrawItem(DrawItemEventArgs e)  
  129.         {  
  130.             this.DrawMode = DrawMode.OwnerDrawFixed;  
  131.             this.ItemHeight = 22;  
  132.             e.DrawBackground();  
  133.             e.DrawFocusRectangle();  
  134.             Brush myBrush = Brushes.Black;  
  135.             if (e.Index > -1 && e.Index < this.Items.Count)  
  136.             {  
  137.                 string drawString = (e.Index + 1)+ " " + this.Items[e.Index].ToString();  
  138.                   
  139.  
  140.                 e.Graphics.DrawString(drawString, e.Font, new SolidBrush(e.ForeColor), e.Bounds,   
  141.  
  142. StringFormat.GenericDefault);  
  143.                 AddButtonToItem(e);  
  144.             }  
  145.             base.OnDrawItem(e);  
  146.  
  147.         }  
  148.  
  149.         private List<Button> btnList = null;  
  150.         protected void AddButtonToItem(DrawItemEventArgs e)  
  151.         {  
  152.             if (btnList.Count <= e.Index)  
  153.             {  
  154.                 btnList.Add(new Button());  
  155.                 Button btn = btnList[e.Index];  
  156.                 btn.BackColor = System.Drawing.Color.LightSkyBlue ;  
  157.                 btn.Name = this.Name + "$ItemButton" + e.Index.ToString();  
  158.                 btn.Width = 20;  
  159.                 btn.Height = 20;  
  160.                 btn.ImageAlign = ContentAlignment.MiddleCenter;  
  161.                 btn.TextImageRelation = TextImageRelation.ImageAboveText;  
  162.                 if (toggleItemList.Count > 0)  
  163.                 {  
  164.                       
  165.                     btn.BackgroundImage = ((ToggleItem)toggleItemList[0]).BGImage;  
  166.                     //btn.Width = toggleItemList[0].BGImage.Width;  
  167.                     //btn.Height = toggleItemList[0].BGImage.Height;  
  168.                     btn.Tag = ((ToggleItem)toggleItemList[0]).Tag;  
  169.                 }  
  170.                 btn.Parent = this;  
  171.                 btn.Click += new EventHandler(ItemButtonClickHandler);  
  172.             }  
  173.             Button bt = btnList[e.Index];  
  174.             bt.Left = this.Width - bt.Width - 20;  
  175.             bt.Top = e.Bounds.Top;  
  176.              
  177.         }  
  178.         /// <summary> 
  179.         /// item button双击事件;  
  180.         /// </summary> 
  181.         /// <param name="sender"></param> 
  182.         /// <param name="e"></param> 
  183.         protected void ItemButtonClickHandler(object sender, EventArgs e)  
  184.         {  
  185.             int index = -1;  
  186.             if (sender is Button)  
  187.                 index = this.IndexFromPoint(((Button)sender).Location);  
  188.  
  189.             if (index == -1)  
  190.                 return;  
  191.  
  192.             Button btn = sender as Button;  
  193.             ToggleItem togold = new ToggleItem((string)btn.Tag, btn.BackgroundImage);  
  194.             ToggleItem tognew = this.GetNexttoggleItem(togold);  
  195.             //btn.Width = tognew.BGImage.Width;  
  196.             //btn.Height = tognew.BGImage.Height;  
  197.             btn.BackgroundImage = tognew.BGImage;  
  198.              
  199.             btn.Tag = tognew.Tag;  
  200.  
  201.             ItemEventHandler handler = (ItemEventHandler)Events[ItemLabelClickObj];  
  202.             if (handler != null)  
  203.             {     
  204.                   
  205.                 handler(sender, new ItemButtonClickEventArgs(index)); ;  
  206.             }  
  207.         }  
  208.  
  209.          
  210.  
  211.           
  212.     }  
  213.     [Serializable]  
  214.     public class ToggleItem  
  215.     {  
  216.         private string tag;  
  217.         private Image bgImage;  
  218.         public ToggleItem()  
  219.         {  
  220.         }  
  221.         public ToggleItem(string tag, Image bg)  
  222.        {  
  223.            this.tag = tag;  
  224.            this.bgImage = bg;  
  225.        }  
  226.        public string Tag  
  227.        {  
  228.             get  
  229.             {  
  230.                 return tag;  
  231.            }  
  232.            set  
  233.            {  
  234.                 tag = value;  
  235.             }  
  236.         }  
  237.  
  238.       public Image BGImage  
  239.         {  
  240.            get  
  241.            {  
  242.                return bgImage;  
  243.            }  
  244.  
  245.            set  
  246.            {  
  247.                bgImage = value;  
  248.  
  249.            }  
  250.        }  
  251.  
  252.     }  
  253.  
  254. }  
  255.  
  256.