1.C#Button扩展控件

1.解决方案下添加新建项目新建类库

2. 在项目下添加新建项选择新建组件类

3.点击项目属性，选择资源，添加资源，把准备好的图片加入Resource

4.先引用，然后导入两个命名空间

5.因为是扩展控件，把继承自Component改成继承自Button

 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Diagnostics;
 5 using System.Linq;
 6 using System.Text;
 7 using System.Windows.Forms;
 8 using System.Drawing;
 9 namespace FJZControl
10 {
11     public partial class FJZButton : Button
12     {
13         public FJZButton()
14         {
15             InitializeComponent();
16         }
17 
18         public FJZButton(IContainer container)
19         {
20             container.Add(this);
21 
22             InitializeComponent();
23         }
24         #region 枚举类型
25         public enum ButtonPreSetImage
26         {   None,
27             Alarm,
28             Folder,
29             DownLoad,
30             Password,
31             Power
32         }
33         #endregion
34 
35         #region 控件属性
36         private ButtonPreSetImage preSetButtonImage;
37         [Category("FJZ自定义Button属性")]
38         [Description("按钮样式选择")]
39         public ButtonPreSetImage PreSetButtonImage
40         {
41             get
42             {
43                 return preSetButtonImage;
44             }
45 
46             set
47             {
48                 preSetButtonImage = value;
49                 switch (preSetButtonImage)
50                 {
51                     case ButtonPreSetImage.None:
52                         Image = null;
53                         break;
54                     case ButtonPreSetImage.Alarm:
55                         Image = Properties.Resources.alarm;
56                         break;
57                     case ButtonPreSetImage.DownLoad:
58                         Image = Properties.Resources.Download;
59                         break;
60                     case ButtonPreSetImage.Folder:
61                         Image = Properties.Resources.folder;
62                         break;
63                     case ButtonPreSetImage.Password:
64                         Image = Properties.Resources.password;
65                         break;
66                     case ButtonPreSetImage.Power:
67                         Image = Properties.Resources.password;
68                         break;
69                     default:
70                         break;
71                 }
72                 if (preSetButtonImage == ButtonPreSetImage.None)
73                 {
74                     this.ImageAlign = ContentAlignment.MiddleCenter;
75                     this.TextAlign = ContentAlignment.MiddleCenter;
76 
77                 }
78                 else
79                 {
80                     this.ImageAlign = ContentAlignment.MiddleLeft;
81                     this.TextAlign = ContentAlignment.MiddleRight;
82                 }
83 
84             }
85         }
86          
87         #endregion
88     }
89 }

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