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：
- 1using System;
- 2using System.Collections.Generic;
- 3using System.Collections;
- 4using System.Text;
- 5using System.ComponentModel;
- 6using System.Windows.Forms;
- 7using System.Drawing;
- 8using System.Drawing.Text;
- 9using System.Data;
- namespace SQLAnalysis
- {
- public class ListBoxEx : ListBox
- {
- public ListBoxEx()
- {
- this.DrawMode = DrawMode.OwnerDrawFixed;
- btnList = new List<Button>();
- }
- public override DrawMode DrawMode
- {
- get
- {
- return DrawMode.OwnerDrawFixed;
- }
- set
- {
- base.DrawMode = DrawMode.OwnerDrawFixed;
- }
- }
- protected override void OnResize(EventArgs e)
- {
- base.OnResize(e);
- this.Refresh();
- }
- public Button FindItemButton(int index)
- {
- // return this.Controls.Find(this.Name + "$ItemComboBox" + index.ToString(), true)[0];
- if (index >= btnList.Count)
- return null;
- return btnList[index];
- }
- /// <summary>
- /// 提供删除item项
- /// </summary>
- /// <param name="index"></param>
- public void RemoveItem(int index)
- {
- this.Items.RemoveAt(index);
- btnList[index].Parent = null;
- btnList[index] = null;
- //btnList[index].Dispose();
- btnList.RemoveAt(index);
- this.Refresh();
- }
- /// <summary>
- /// 提供移动item项
- /// </summary>
- /// <param name="offset"></param>
- public void MoveItem(int offset)
- {
- int index = this.SelectedIndex + offset;
- if (index > -1 && index < this.Items.Count)
- {
- int oldSelectedIndex = this.SelectedIndex;
- Object item = this.SelectedItem;
- this.Items.RemoveAt(oldSelectedIndex);
- this.Items.Insert(index, item);
- Button btn = btnList[oldSelectedIndex];
- btnList.RemoveAt(oldSelectedIndex);
- btnList.Insert(index, btn);
- this.Refresh();
- }
- else
- {
- MessageBox.Show("不是可用的移动矢量");
- }
- }
- private ToggleItem GetNexttoggleItem(ToggleItem tog)
- {
- int index = -1;
- for (int i = 0; i < ToggleItemList.Count; i++)
- {
- ToggleItem item =(ToggleItem)ToggleItemList[i];
- if (item.Tag == tog.Tag)
- {
- iindex = i;
- break;
- }
- }
- return ((ToggleItem)ToggleItemList[(index + 1) % ToggleItemList.Count]);
- }
- private List<ToggleItem> toggleItemList ;//List<ToggleItem> toggleItemList = new List<ToggleItem>();
- [Bindable(false), Browsable(false)]
- [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
- public List<ToggleItem> ToggleItemList
- {
- get
- {
- if (toggleItemList == null)
- toggleItemList = new List<ToggleItem>();
- return toggleItemList;
- }
- set
- {
- if (toggleItemList == null)
- toggleItemList = new List<ToggleItem>();
- toggleItemList = value;
- }
- }
- //主要重写事件
- protected override void OnDrawItem(DrawItemEventArgs e)
- {
- this.DrawMode = DrawMode.OwnerDrawFixed;
- this.ItemHeight = 22;
- e.DrawBackground();
- e.DrawFocusRectangle();
- Brush myBrush = Brushes.Black;
- if (e.Index > -1 && e.Index < this.Items.Count)
- {
- string drawString = (e.Index + 1)+ " " + this.Items[e.Index].ToString();
- e.Graphics.DrawString(drawString, e.Font, new SolidBrush(e.ForeColor), e.Bounds,
- StringFormat.GenericDefault);
- AddButtonToItem(e);
- }
- base.OnDrawItem(e);
- }
- private List<Button> btnList = null;
- protected void AddButtonToItem(DrawItemEventArgs e)
- {
- if (btnList.Count <= e.Index)
- {
- btnList.Add(new Button());
- Button btn = btnList[e.Index];
- btn.BackColor = System.Drawing.Color.LightSkyBlue ;
- btn.Name = this.Name + "$ItemButton" + e.Index.ToString();
- btn.Width = 20;
- btn.Height = 20;
- btn.ImageAlign = ContentAlignment.MiddleCenter;
- btn.TextImageRelation = TextImageRelation.ImageAboveText;
- if (toggleItemList.Count > 0)
- {
- btn.BackgroundImage = ((ToggleItem)toggleItemList[0]).BGImage;
- //btn.Width = toggleItemList[0].BGImage.Width;
- //btn.Height = toggleItemList[0].BGImage.Height;
- btn.Tag = ((ToggleItem)toggleItemList[0]).Tag;
- }
- btn.Parent = this;
- btn.Click += new EventHandler(ItemButtonClickHandler);
- }
- Button bt = btnList[e.Index];
- bt.Left = this.Width - bt.Width - 20;
- bt.Top = e.Bounds.Top;
- }
- /// <summary>
- /// item button双击事件；
- /// </summary>
- /// <param name="sender"></param>
- /// <param name="e"></param>
- protected void ItemButtonClickHandler(object sender, EventArgs e)
- {
- int index = -1;
- if (sender is Button)
- index = this.IndexFromPoint(((Button)sender).Location);
- if (index == -1)
- return;
- Button btn = sender as Button;
- ToggleItem togold = new ToggleItem((string)btn.Tag, btn.BackgroundImage);
- ToggleItem tognew = this.GetNexttoggleItem(togold);
- //btn.Width = tognew.BGImage.Width;
- //btn.Height = tognew.BGImage.Height;
- btn.BackgroundImage = tognew.BGImage;
- btn.Tag = tognew.Tag;
- ItemEventHandler handler = (ItemEventHandler)Events[ItemLabelClickObj];
- if (handler != null)
- {
- handler(sender, new ItemButtonClickEventArgs(index)); ;
- }
- }
- }
- [Serializable]
- public class ToggleItem
- {
- private string tag;
- private Image bgImage;
- public ToggleItem()
- {
- }
- public ToggleItem(string tag, Image bg)
- {
- this.tag = tag;
- this.bgImage = bg;
- }
- public string Tag
- {
- get
- {
- return tag;
- }
- set
- {
- tag = value;
- }
- }
- public Image BGImage
- {
- get
- {
- return bgImage;
- }
- set
- {
- bgImage = value;
- }
- }
- }
- }
本文转自 破狼 51CTO博客，原文链接：http://blog.51cto.com/whitewolfblog/832641，如需转载请自行联系原作者
