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(100, 32); } 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 } }