仿listBox写了一个Control控件为item的列表集合-阿里云开发者社区

仿listBox写了一个Control控件为item的列表集合，由于最近做个项目要用，微软提供的控件实现起来不行，但自己写了一个，效果如下：
代码
   
  
  1using System;
  2using System.Collections.Generic;
  3using System.ComponentModel;
  4using System.Data;
  5using System.Drawing;
  6using System.Text;
  7using System.Text.RegularExpressions;
  8using System.Windows.Forms;
  9
 10namespace SQLAnalysis
 11{
 12    public class MySelfControlList : Control
 13    {
 14        private System.Windows.Forms.ErrorProvider err;
 15        public MySelfControlList()
 16        {
 17            InitializeComponent();
 18            this.BackColor = Color.White;
 19            itemList = new ListItemColloction();  
 20            if (isNeedVaidate)
 21            {
 22                err = new ErrorProvider();
 23            }
 24        }
 25       
 26
 27        
 28       
 29        [Browsable(false)]
 30        public bool IsValidated
 31        {
 32            get
 33            {
 34                return List_Validating(); 
 35            }
 36        }
 37        [DefaultValue(typeof(Color), "White")]
 38        public override Color BackColor
 39        {
 40            get
 41            {
 42                return base.BackColor; 
 43            }
 44            set
 45            {
 46                base.BackColor = value;
 47            }
 48        }
 49        private ListItemColloction itemList;
 50        
 51       /// <summary>
 52       /// 不提供设计时绑定
 53       /// </summary>
 54        [Bindable(false), Browsable(false)]
 55        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 56        public ListItemColloction Items
 57        {
 58            get
 59            {
 60                if (itemList == null)
 61                    itemList = new ListItemColloction();
 62                return itemList;
 63            }
 64            set
 65            {
 66                itemList = value;
 67            }
 68        }
 69        public int Count
 70        {
 71            get
 72            {
 73                return itemList.Count;
 74            }
 75        }
 76        public void RemoveAll()
 77        {
 78            for( int i=this.itemList.Count -1;i>-1;i--)
 79            {
 80                Item item = itemList[i];
 81                item.ItemControl.Parent = null;
 82                itemList.Remove(item);
 83            }
 84            
 85        }
 86        public int AddItem(Item item)
 87        {
 88            itemList.Add(item);
 89            this.Refresh();
 90            return itemList.IndexOf(item);
 91        }
 92        public void InsertItem(int index, Item item)
 93        {
 94            itemList.Insert(index, item);
 95            this.Refresh();
 96
 97        }
 98        public void RemoveItem(Item item)
 99        {
100            item.ItemControl.Parent = null;
101            itemList.Remove(item);
102            this.Refresh();
103        }
104        public void RemoveItemAt(int index)
105        {
106            itemList[index].ItemControl.Parent = null;
107            itemList.RemoveAt(index);
108            this.Refresh();
109        }
110        private string emptyText;
111        public string EmptyText
112        {
113            get
114            {
115             return emptyText;
116            }
117            set
118            {
119             emptyText =value;
120            }
121        }
122        [Browsable(false)]
123        public override string Text
124        {
125            get
126            {
127                return base.Text;
128            }
129            set
130            {
131                base.Text = value;
132            }
133        }
134
135       
136
137        public string ItemText(int index)
138        {
139            return itemList[index].ItemControl.Text;
140        }
141
142        private ToolTip toolTip1;
143        private int itemHeight = 25;
144        public int ItemHeight
145        {
146            get
147            {
148                return itemHeight;
149            }
150
151            set
152            {
153                itemHeight = value;
154            }
155        }
156        /// <summary>
157        /// 重写Paint方法
158        /// </summary>
159        /// <param name="e"></param>
160        protected override void OnPaint(PaintEventArgs e)
161        {
162
163            this.Height = this.itemHeight * (itemList.Count + 1);
164            base.OnPaint(e);
165            if (itemList.Count == 0)
166            {
167                e.Graphics.DrawString(this.emptyText, this.Font,Brushes.Black, e.ClipRectangle);
168                return;
169            }
170            
171           
172            //e.Graphics.DrawRectangle(new Pen(Brushes.Black),this.Left,this.Top,this.Width,this.Height);
173            for (int i = 0; i < itemList.Count; i++)
174            {
175                Point location = new Point(0, i * this.itemHeight);
176                Rectangle bound = new Rectangle(location, new Size(this.Size.Width, this.itemHeight));
177                OnDrawItem(new DrawItemEventArgsMySelf(bound, i, e.Graphics));
178            }
179        }
180        /// <summary>
181        /// 画每一项
182        /// </summary>
183        /// <param name="e"></param>
184        protected void OnDrawItem(DrawItemEventArgsMySelf e)
185        {
186            Graphics g = e.Graphics;
187            Pen pen = new Pen(Brushes.Wheat);
188            g.DrawRectangle(pen, e.Bound);
189
190            int index = e.Index;
191            if (index > -1 && index < itemList.Count)
192            {
193                Control ctr = itemList[index].ItemControl;
194                if (ctr.Parent == null)
195                {
196                    ctr.Parent = this;
197                
198                    ctr.Height = e.Bound.Height;
199                   if( ctr.Width >this.Width)
200                     ctr.Width = this.Width - 5;
201                    toolTip1.SetToolTip(ctr, itemList[index].ItemDescribe);
202                }
203                ctr.Location = e.Bound.Location;
204
205            }
206        }
207
208        public bool List_Validating()
209        {  bool isValidated = true;
210            foreach (Item item in itemList)
211            {
212                isValidated = isValidated && ListItemControls_Validating(item.ItemControl, new CancelEventArgs());
213            }
214            return isValidated;
215        }
216
217        public bool ListItemControls_Validating(object sender, CancelEventArgs e)
218        {
219            Control ctr = sender as Control;
220            Item item = itemList[ctr];
221            
222            if (string.IsNullOrEmpty(item.Regex))
223                return true;
224            Regex regex = new Regex(item.Regex);
225
226            string text = ctr.Text.Trim();
227            if (!regex.IsMatch(text))
228            {
229                err.SetIconAlignment(ctr, ErrorIconAlignment.MiddleRight);
230                err.SetIconPadding(ctr, 3);
231                err.SetError(ctr, item.ErrorMessage);
232                return false;
233            }
234            err.Clear();
235           
236            return true;
237        }
238        private void InitializeComponent()
239        {
240
241            this.components = new System.ComponentModel.Container();
242            this.toolTip1 = new System.Windows.Forms.ToolTip(this.components);
243            this.SuspendLayout();
244            this.ResumeLayout(false);
245
246        }
247
248        private IContainer components;
249    }
250
251    public class ListItemColloction : List<Item>
252    {
253        public Item this[Control itemControl]
254        {
255            get
256            {
257                for (int i = 0; i < this.Count; i++)
258                {
259                    if (this[i].ItemControl.Equals(itemControl))
260                        return this[i];
261                }
262                return null;
263            }
264
265            set
266            {
267                for (int i = 0; i < this.Count; i++)
268                {
269                    if (this[i].ItemControl.Equals(itemControl))
270                        this[i] = value;
271                }
272            }
273        }
274    }
275
276    [Serializable]
277    public class Item
278    {
279        private Control itemControl = null;
280        private string itemDescible = string.Empty;
281        private string regex = string.Empty;
282        private string errorMessage = string.Empty;
283        public Item()
284        {
285        }
286
287        public Item(Control itemControl, string itemDescible,string regex,string errorMessage)
288        {
289            this.itemControl = itemControl;
290            this.itemDescible = itemDescible;
291            this.regex = regex;
292            this.errorMessage = errorMessage;
293        }
294        public Item(Control itemControl, string itemDescible)
295        {
296            this.itemControl = itemControl;
297            this.itemDescible = itemDescible;
298           
299        }
300        public string Regex
301        {
302            get
303            {
304                return regex;
305            }
306            set
307            {
308                regex = value;
309            }
310        }
311        public Control ItemControl
312        {
313            get
314            {
315                return itemControl;
316            }
317            set
318            {
319                itemControl = value;
320            }
321        }
322
323        public string ItemDescribe
324        {
325            get
326            {
327                return itemDescible;
328            }
329
330            set
331            {
332                itemDescible = value;
333            }
334        }
335
336        public string ErrorMessage
337        {
338            get
339            {
340                return errorMessage;
341            }
342            set
343            {
344                errorMessage = value;
345            }
346        }
347
348    }
349    public class DrawItemEventArgsMySelf : EventArgs
350    {
351        private Rectangle bound = Rectangle.Empty;
352
353        private int index;
354        private Graphics graphics;
355        public Graphics Graphics
356        {
357            get
358            {
359                return this.graphics;
360            }
361        }
362        public DrawItemEventArgsMySelf(Rectangle bound, int index, Graphics g)
363        {
364            this.bound = bound;
365
366            this.index = index;
367            this.graphics = g;
368        }
369        public Rectangle Bound
370        {
371            get
372            {
373                return this.bound;
374            }
375        }
376
377
378        public int Index
379        {
380            get
381            {
382                return index;
383            }
384        }
385       
386    }
387}
388
   
  
作者：破狼
出处：http://www.cnblogs.com/whitewolf/
本文版权归作者，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。该文章也同时发布在我的独立博客中-个人独立博客、博客园--破狼和51CTO--破狼。http://www.cnblogs.com/whitewolf/archive/2009/10/12/1581928.html
仿listBox写了一个Control控件为item的列表集合

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