最近在准备一套自定义控件开发的课程，下面将第一个做的按钮控件分享给大家。
其实这个控件属于自定义控件中的扩展控件，与组合控件和GDI+开发的控件不同，这个控件是继承原生的Button，
这个控件的目的在于把常用的图标集成到控件中，使用会更方便。大家都知道，软件开发UI设计是必不可免的一部分，
所以一个带有图标的按钮会比一个光秃秃的按钮要增色不少，但是大家很多时候不想或者没法找到图标，如果集成在
控件里，是不是会方便很多呢？其实实现原理很简单：
实现效果如下图所示：
接着上代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms; namespace XktControl
{
public partial class xktButton : Button
{
public xktButton()
{
InitializeComponent();
this.PreSetImage = ButtonPresetImage.None;
this.Size = new Size(, ); } public xktButton(IContainer container)
{
container.Add(this); InitializeComponent();
} #region Enum
/// <summary>
/// EasyButton类型的类型
/// </summary>
public enum ButtonPresetImage
{
/// <summary>
/// 没有图标
/// </summary>
None,
/// <summary>
/// 确认图标
/// </summary>
Check,
/// <summary>
/// 关闭图标
/// </summary>
Close,
/// <summary>
/// 取消图标
/// </summary>
Cancel,
/// <summary>
/// 退后图标
/// </summary>
Back,
/// <summary>
/// 向下图标
/// </summary>
Down,
/// <summary>
/// 前进图标
/// </summary>
Go,
/// <summary>
/// 向上图标
/// </summary>
Up,
/// <summary>
/// 文件夹图标
/// </summary>
Folder,
/// <summary>
/// 刷新图标
/// </summary>
Refresh,
/// <summary>
/// 设置图标
/// </summary>
Setting,
/// <summary>
/// 文件打开图标
/// </summary>
FolderOpen,
/// <summary>
/// 文件删除图标
/// </summary>
DocumentDelete,
/// <summary>
/// 文件图标
/// </summary>
Document,
/// <summary>
/// 文件编辑图标
/// </summary>
DocumentEdit,
/// <summary>
/// 信息图标
/// </summary>
Info,
/// <summary>
/// 文件添加图标
/// </summary>
DocumentAdd,
/// <summary>
/// 全局图标
/// </summary>
Gobal,
/// <summary>
/// 计算图标
/// </summary>
Calculator,
/// <summary>
/// 日期图标
/// </summary>
Calendar,
/// <summary>
/// 打印图标
/// </summary>
Printer
} #endregion #region Fields
ButtonPresetImage _buttontype;
#endregion #region Properties
/// <summary>
/// To show different Image and Text
/// </summary>
[Browsable(true)]
[Description("显示不同的图像")]
[Category("自定义属性")]
public ButtonPresetImage PreSetImage
{
get
{
return _buttontype;
} set
{
_buttontype = value;
switch (_buttontype)
{
case ButtonPresetImage.None:
this.Image = null;
this.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
break;
case ButtonPresetImage.Check:
this.Image = Properties.Resources.check;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Close:
this.Image = Properties.Resources.close;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Cancel:
this.Image = Properties.Resources.cancel;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Back:
this.Image = Properties.Resources.back;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Down:
this.Image = Properties.Resources.down;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Go:
this.Image = Properties.Resources.go;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Up:
this.Image = Properties.Resources.up;
break;
case ButtonPresetImage.Folder:
this.Image = Properties.Resources.folder;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Refresh:
this.Image = Properties.Resources.refresh;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Setting:
this.Image = Properties.Resources.setting;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.FolderOpen:
this.Image = Properties.Resources.folder_open;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.DocumentDelete:
this.Image = Properties.Resources.document_delete;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Document:
this.Image = Properties.Resources.document;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.DocumentEdit:
this.Image = Properties.Resources.document_edit;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Info:
this.Image = Properties.Resources.info;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.DocumentAdd:
this.Image = Properties.Resources.document_add;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Gobal:
this.Image = Properties.Resources.web;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Calculator:
this.Image = Properties.Resources.calculator;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Calendar:
this.Image = Properties.Resources.calendar;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
case ButtonPresetImage.Printer:
this.Image = Properties.Resources.printer;
this.ImageAlign = System.Drawing.ContentAlignment.MiddleLeft;
this.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
break;
default:
break;
} this.Invalidate();
}
} #endregion }
}
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