（六）c#Winform自定义控件-单选框
（六）c#Winform自定义控件-单选框
冰封一夏
发布于 2019-09-11 15:53:11
发布于 2019-09-11 15:53:11
前提
入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。
GitHub：https://github.com/kwwwvagaa/NetWinformControl
码云：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
如果觉得写的还行，请点个 star 支持一下吧
目录
https://www.cnblogs.com/bfyx/p/11364884.html
准备工作
准备4个图片，分别对应选中，没选中，选中禁用，没选中禁用
复选框需要支持分组，当同一面板上具有多种选择的时候，分组就显得更为重要了
开始
添加一个用户控件，命名为：UCRadioButton
看一下有哪些属性
1 [Description("选中改变事件"), Category("自定义")]
2 public event EventHandler CheckedChangeEvent;
3
4 private Font _Font = new Font("微软雅黑", 12);
5 [Description("字体"), Category("自定义")]
6 public new Font Font
7 {
8 get { return _Font; }
9 set
10 {
11 _Font = value;
12 label1.Font = value;
13 }
14 }
15
16 private Color _ForeColor = Color.FromArgb(62, 62, 62);
17 [Description("字体颜色"), Category("自定义")]
18 public new Color ForeColor
19 {
20 get { return _ForeColor; }
21 set
22 {
23 label1.ForeColor = value;
24 _ForeColor = value;
25 }
26 }
27 private string _Text = "单选按钮";
28 [Description("文本"), Category("自定义")]
29 public string TextValue
30 {
31 get { return _Text; }
32 set
33 {
34 label1.Text = value;
35 _Text = value;
36 }
37 }
38 private bool _checked = false;
39 [Description("是否选中"), Category("自定义")]
40 public bool Checked
41 {
42 get
43 {
44 return _checked;
45 }
46 set
47 {
48 if (_checked != value)
49 {
50 _checked = value;
51 if (base.Enabled)
52 {
53 if (_checked)
54 {
55 panel1.BackgroundImage = Properties.Resources.radioButton1;
56 }
57 else
58 {
59 panel1.BackgroundImage = Properties.Resources.radioButton0;
60 }
61 }
62 else
63 {
64 if (_checked)
65 {
66 panel1.BackgroundImage = Properties.Resources.radioButton10;
67 }
68 else
69 {
70 panel1.BackgroundImage = Properties.Resources.radioButton00;
71 }
72 }
73 SetCheck(value);
74
75 if (CheckedChangeEvent != null)
76 {
77 CheckedChangeEvent(this, null);
78 }
79 }
80 }
81 }
82
83 private string _groupName;
84
85 [Description("分组名称"), Category("自定义")]
86 public string GroupName
87 {
88 get { return _groupName; }
89 set { _groupName = value; }
90 }
91
92 public new bool Enabled
93 {
94 get
95 {
96 return base.Enabled;
97 }
98 set
99 {
100 base.Enabled = value;
101 if (value)
102 {
103 if (_checked)
104 {
105 panel1.BackgroundImage = Properties.Resources.radioButton1;
106 }
107 else
108 {
109 panel1.BackgroundImage = Properties.Resources.radioButton0;
110 }
111 }
112 else
113 {
114 if (_checked)
115 {
116 panel1.BackgroundImage = Properties.Resources.radioButton10;
117 }
118 else
119 {
120 panel1.BackgroundImage = Properties.Resources.radioButton00;
121 }
122 }
123 }
124 }当选中状态改变时需要根据分组名称来做相应的处理
1 private void SetCheck(bool bln)
2 {
3 if (!bln)
4 return;
5 if (this.Parent != null)
6 {
7 foreach (Control c in this.Parent.Controls)
8 {
9 if (c is UCRadioButton && c != this)
10 {
11 UCRadioButton uc = (UCRadioButton)c;
12 if (_groupName == uc.GroupName && uc.Checked)
13 {
14 uc.Checked = false;
15 return;
16 }
17 }
18 }
19 }
20 }当点击时改变选中状态
1 private void Radio_MouseDown(object sender, MouseEventArgs e)
2 {
3 this.Checked = true;
4 }加载时做一下处理，防止多选了
1 private void UCRadioButton_Load(object sender, EventArgs e)
2 {
3 if (this.Parent != null && this._checked)
4 {
5 foreach (Control c in this.Parent.Controls)
6 {
7 if (c is UCRadioButton && c != this)
8 {
9 UCRadioButton uc = (UCRadioButton)c;
10 if (_groupName == uc.GroupName && uc.Checked)
11 {
12 Checked = false;
13 return;
14 }
15 }
16 }
17 }
18 }来看下完整的代码吧
1 // 版权所有 黄正辉 交流群：568015492 QQ：623128629
2 // 文件名称：UCRadioButton.cs
3 // 创建日期：2019-08-15 16:03:13
4 // 功能描述：RadioButton
5 // 项目地址：https://gitee.com/kwwwvagaa/net_winform_custom_control
6 using System;
7 using System.Collections.Generic;
8 using System.ComponentModel;
9 using System.Drawing;
10 using System.Data;
11 using System.Linq;
12 using System.Text;
13 using System.Windows.Forms;
14
15 namespace HZH_Controls.Controls
16 {
17 [DefaultEvent("CheckedChangeEvent")]
18 public partial class UCRadioButton : UserControl
19 {
20 [Description("选中改变事件"), Category("自定义")]
21 public event EventHandler CheckedChangeEvent;
22
23 private Font _Font = new Font("微软雅黑", 12);
24 [Description("字体"), Category("自定义")]
25 public new Font Font
26 {
27 get { return _Font; }
28 set
29 {
30 _Font = value;
31 label1.Font = value;
32 }
33 }
34
35 private Color _ForeColor = Color.FromArgb(62, 62, 62);
36 [Description("字体颜色"), Category("自定义")]
37 public new Color ForeColor
38 {
39 get { return _ForeColor; }
40 set
41 {
42 label1.ForeColor = value;
43 _ForeColor = value;
44 }
45 }
46 private string _Text = "单选按钮";
47 [Description("文本"), Category("自定义")]
48 public string TextValue
49 {
50 get { return _Text; }
51 set
52 {
53 label1.Text = value;
54 _Text = value;
55 }
56 }
57 private bool _checked = false;
58 [Description("是否选中"), Category("自定义")]
59 public bool Checked
60 {
61 get
62 {
63 return _checked;
64 }
65 set
66 {
67 if (_checked != value)
68 {
69 _checked = value;
70 if (base.Enabled)
71 {
72 if (_checked)
73 {
74 panel1.BackgroundImage = Properties.Resources.radioButton1;
75 }
76 else
77 {
78 panel1.BackgroundImage = Properties.Resources.radioButton0;
79 }
80 }
81 else
82 {
83 if (_checked)
84 {
85 panel1.BackgroundImage = Properties.Resources.radioButton10;
86 }
87 else
88 {
89 panel1.BackgroundImage = Properties.Resources.radioButton00;
90 }
91 }
92 SetCheck(value);
93
94 if (CheckedChangeEvent != null)
95 {
96 CheckedChangeEvent(this, null);
97 }
98 }
99 }
100 }
101
102 private string _groupName;
103
104 [Description("分组名称"), Category("自定义")]
105 public string GroupName
106 {
107 get { return _groupName; }
108 set { _groupName = value; }
109 }
110
111 public new bool Enabled
112 {
113 get
114 {
115 return base.Enabled;
116 }
117 set
118 {
119 base.Enabled = value;
120 if (value)
121 {
122 if (_checked)
123 {
124 panel1.BackgroundImage = Properties.Resources.radioButton1;
125 }
126 else
127 {
128 panel1.BackgroundImage = Properties.Resources.radioButton0;
129 }
130 }
131 else
132 {
133 if (_checked)
134 {
135 panel1.BackgroundImage = Properties.Resources.radioButton10;
136 }
137 else
138 {
139 panel1.BackgroundImage = Properties.Resources.radioButton00;
140 }
141 }
142 }
143 }
144 public UCRadioButton()
145 {
146 InitializeComponent();
147 }
148
149 private void SetCheck(bool bln)
150 {
151 if (!bln)
152 return;
153 if (this.Parent != null)
154 {
155 foreach (Control c in this.Parent.Controls)
156 {
157 if (c is UCRadioButton && c != this)
158 {
159 UCRadioButton uc = (UCRadioButton)c;
160 if (_groupName == uc.GroupName && uc.Checked)
161 {
162 uc.Checked = false;
163 return;
164 }
165 }
166 }
167 }
168 }
169
170 private void Radio_MouseDown(object sender, MouseEventArgs e)
171 {
172 this.Checked = true;
173 }
174
175 private void UCRadioButton_Load(object sender, EventArgs e)
176 {
177 if (this.Parent != null && this._checked)
178 {
179 foreach (Control c in this.Parent.Controls)
180 {
181 if (c is UCRadioButton && c != this)
182 {
183 UCRadioButton uc = (UCRadioButton)c;
184 if (_groupName == uc.GroupName && uc.Checked)
185 {
186 Checked = false;
187 return;
188 }
189 }
190 }
191 }
192 }
193 }
194 } 1 namespace HZH_Controls.Controls
2 {
3 partial class UCRadioButton
4 {
5 /// <summary>
6 /// 必需的设计器变量。
7 /// </summary>
8 private System.ComponentModel.IContainer components = null;
9
10 /// <summary>
11 /// 清理所有正在使用的资源。
12 /// </summary>
13 /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
14 protected override void Dispose(bool disposing)
15 {
16 if (disposing && (components != null))
17 {
18 components.Dispose();
19 }
20 base.Dispose(disposing);
21 }
22
23 #region 组件设计器生成的代码
24
25 /// <summary>
26 /// 设计器支持所需的方法 - 不要
27 /// 使用代码编辑器修改此方法的内容。
28 /// </summary>
29 private void InitializeComponent()
30 {
31 this.label1 = new System.Windows.Forms.Label();
32 this.panel1 = new System.Windows.Forms.Panel();
33 this.SuspendLayout();
34 //
35 // label1
36 //
37 this.label1.Dock = System.Windows.Forms.DockStyle.Fill;
38 this.label1.Font = new System.Drawing.Font("微软雅黑", 12F);
39 this.label1.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(62)))), ((int)(((byte)(62)))), ((int)(((byte)(62)))));
40 this.label1.Location = new System.Drawing.Point(18, 0);
41 this.label1.Name = "label1";
42 this.label1.Padding = new System.Windows.Forms.Padding(5, 0, 0, 0);
43 this.label1.Size = new System.Drawing.Size(215, 30);
44 this.label1.TabIndex = 3;
45 this.label1.Text = "单选按钮";
46 this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
47 this.label1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Radio_MouseDown);
48 //
49 // panel1
50 //
51 this.panel1.BackgroundImage = global::HZH_Controls.Properties.Resources.radioButton0;
52 this.panel1.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Zoom;
53 this.panel1.Dock = System.Windows.Forms.DockStyle.Left;
54 this.panel1.Location = new System.Drawing.Point(0, 0);
55 this.panel1.Name = "panel1";
56 this.panel1.Size = new System.Drawing.Size(18, 30);
57 this.panel1.TabIndex = 2;
58 this.panel1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Radio_MouseDown);
59 //
60 // UCRadioButton
61 //
62 this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
63 this.Controls.Add(this.label1);
64 this.Controls.Add(this.panel1);
65 this.Name = "UCRadioButton";
66 this.Size = new System.Drawing.Size(233, 30);
67 this.Load += new System.EventHandler(this.UCRadioButton_Load);
68 this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Radio_MouseDown);
69 this.ResumeLayout(false);
70
71 }
72
73 #endregion
74
75 private System.Windows.Forms.Label label1;
76 private System.Windows.Forms.Panel panel1;
77 }
78 }用处及效果
用处：就是单选框
效果：
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原始发表：2019-08-16 ，如有侵权请联系 cloudcommunity@tencent.com 删除
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