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
- namespace SQLAnalysis
- {
- public class MySelfControlList : Control
- {
- private System.Windows.Forms.ErrorProvider err;
- public MySelfControlList()
- {
- InitializeComponent();
- this.BackColor = Color.White;
- itemList = new ListItemColloction();
- if (isNeedVaidate)
- {
- err = new ErrorProvider();
- }
- }
- [Browsable(false)]
- public bool IsValidated
- {
- get
- {
- return List_Validating();
- }
- }
- [DefaultValue(typeof(Color), "White")]
- public override Color BackColor
- {
- get
- {
- return base.BackColor;
- }
- set
- {
- base.BackColor = value;
- }
- }
- private ListItemColloction itemList;
- /// <summary>
- /// 不提供设计时绑定
- /// </summary>
- [Bindable(false), Browsable(false)]
- [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
- public ListItemColloction Items
- {
- get
- {
- if (itemList == null)
- itemList = new ListItemColloction();
- return itemList;
- }
- set
- {
- itemList = value;
- }
- }
- public int Count
- {
- get
- {
- return itemList.Count;
- }
- }
- public void RemoveAll()
- {
- for( int i=this.itemList.Count -1;i>-1;i--)
- {
- Item item = itemList[i];
- item.ItemControl.Parent = null;
- itemList.Remove(item);
- }
- }
- public int AddItem(Item item)
- {
- itemList.Add(item);
- this.Refresh();
- return itemList.IndexOf(item);
- }
- public void InsertItem(int index, Item item)
- {
- itemList.Insert(index, item);
- this.Refresh();
- }
- public void RemoveItem(Item item)
- {
- item.ItemControl.Parent = null;
- itemList.Remove(item);
- this.Refresh();
- }
- public void RemoveItemAt(int index)
- {
- itemList[index].ItemControl.Parent = null;
- itemList.RemoveAt(index);
- this.Refresh();
- }
- private string emptyText;
- public string EmptyText
- {
- get
- {
- return emptyText;
- }
- set
- {
- emptyText =value;
- }
- }
- [Browsable(false)]
- public override string Text
- {
- get
- {
- return base.Text;
- }
- set
- {
- base.Text = value;
- }
- }
- public string ItemText(int index)
- {
- return itemList[index].ItemControl.Text;
- }
- private ToolTip toolTip1;
- private int itemHeight = 25;
- public int ItemHeight
- {
- get
- {
- return itemHeight;
- }
- set
- {
- itemHeight = value;
- }
- }
- /// <summary>
- /// 重写Paint方法
- /// </summary>
- /// <param name="e"></param>
- protected override void OnPaint(PaintEventArgs e)
- {
- this.Height = this.itemHeight * (itemList.Count + 1);
- base.OnPaint(e);
- if (itemList.Count == 0)
- {
- e.Graphics.DrawString(this.emptyText, this.Font,Brushes.Black, e.ClipRectangle);
- return;
- }
- //e.Graphics.DrawRectangle(new Pen(Brushes.Black),this.Left,this.Top,this.Width,this.Height);
- for (int i = 0; i < itemList.Count; i++)
- {
- Point location = new Point(0, i * this.itemHeight);
- Rectangle bound = new Rectangle(location, new Size(this.Size.Width, this.itemHeight));
- OnDrawItem(new DrawItemEventArgsMySelf(bound, i, e.Graphics));
- }
- }
- /// <summary>
- /// 画每一项
- /// </summary>
- /// <param name="e"></param>
- protected void OnDrawItem(DrawItemEventArgsMySelf e)
- {
- Graphics g = e.Graphics;
- Pen pen = new Pen(Brushes.Wheat);
- g.DrawRectangle(pen, e.Bound);
- int index = e.Index;
- if (index > -1 && index < itemList.Count)
- {
- Control ctr = itemList[index].ItemControl;
- if (ctr.Parent == null)
- {
- ctr.Parent = this;
- ctr.Height = e.Bound.Height;
- if( ctr.Width >this.Width)
- ctr.Width = this.Width - 5;
- toolTip1.SetToolTip(ctr, itemList[index].ItemDescribe);
- }
- ctr.Location = e.Bound.Location;
- }
- }
- public bool List_Validating()
- { bool isValidated = true;
- foreach (Item item in itemList)
- {
- isValidated = isValidated && ListItemControls_Validating(item.ItemControl, new CancelEventArgs());
- }
- return isValidated;
- }
- public bool ListItemControls_Validating(object sender, CancelEventArgs e)
- {
- Control ctr = sender as Control;
- Item item = itemList[ctr];
- if (string.IsNullOrEmpty(item.Regex))
- return true;
- Regex regex = new Regex(item.Regex);
- string text = ctr.Text.Trim();
- if (!regex.IsMatch(text))
- {
- err.SetIconAlignment(ctr, ErrorIconAlignment.MiddleRight);
- err.SetIconPadding(ctr, 3);
- err.SetError(ctr, item.ErrorMessage);
- return false;
- }
- err.Clear();
- return true;
- }
- private void InitializeComponent()
- {
- this.components = new System.ComponentModel.Container();
- this.toolTip1 = new System.Windows.Forms.ToolTip(this.components);
- this.SuspendLayout();
- this.ResumeLayout(false);
- }
- private IContainer components;
- }
- public class ListItemColloction : List<Item>
- {
- public Item this[Control itemControl]
- {
- get
- {
- for (int i = 0; i < this.Count; i++)
- {
- if (this[i].ItemControl.Equals(itemControl))
- return this[i];
- }
- return null;
- }
- set
- {
- for (int i = 0; i < this.Count; i++)
- {
- if (this[i].ItemControl.Equals(itemControl))
- this[i] = value;
- }
- }
- }
- }
- [Serializable]
- public class Item
- {
- private Control itemControl = null;
- private string itemDescible = string.Empty;
- private string regex = string.Empty;
- private string errorMessage = string.Empty;
- public Item()
- {
- }
- public Item(Control itemControl, string itemDescible,string regex,string errorMessage)
- {
- this.itemControl = itemControl;
- this.itemDescible = itemDescible;
- this.regex = regex;
- this.errorMessage = errorMessage;
- }
- public Item(Control itemControl, string itemDescible)
- {
- this.itemControl = itemControl;
- this.itemDescible = itemDescible;
- }
- public string Regex
- {
- get
- {
- return regex;
- }
- set
- {
- regex = value;
- }
- }
- public Control ItemControl
- {
- get
- {
- return itemControl;
- }
- set
- {
- itemControl = value;
- }
- }
- public string ItemDescribe
- {
- get
- {
- return itemDescible;
- }
- set
- {
- itemDescible = value;
- }
- }
- public string ErrorMessage
- {
- get
- {
- return errorMessage;
- }
- set
- {
- errorMessage = value;
- }
- }
- }
- public class DrawItemEventArgsMySelf : EventArgs
- {
- private Rectangle bound = Rectangle.Empty;
- private int index;
- private Graphics graphics;
- public Graphics Graphics
- {
- get
- {
- return this.graphics;
- }
- }
- public DrawItemEventArgsMySelf(Rectangle bound, int index, Graphics g)
- {
- this.bound = bound;
- this.index = index;
- this.graphics = g;
- }
- public Rectangle Bound
- {
- get
- {
- return this.bound;
- }
- }
- public int Index
- {
- get
- {
- return index;
- }
- }
- }
- }
本文转自 破狼 51CTO博客，原文链接：http://blog.51cto.com/whitewolfblog/832646，如需转载请自行联系原作者
