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（三十六）c#Winform自定义控件-步骤控件-HZHControls

官网

http://www.hzhcontrols.com

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

欢迎前来交流探讨：企鹅群568015492

准备工作

也没什么可准备的了

开始

添加一个用户控件，命名UCStep

来点属性

 1  public event EventHandler IndexChecked;
 2 
 3         private Color m_stepBackColor = Color.FromArgb(100, 100, 100);
 4         /// <summary>
 5         /// 步骤背景色
 6         /// </summary>
 7         [Description("步骤背景色"), Category("自定义")]
 8         public Color StepBackColor
 9         {
10             get { return m_stepBackColor; }
11             set { m_stepBackColor = value; }
12         }
13 
14         private Color m_stepForeColor = Color.FromArgb(255, 85, 51);
15         /// <summary>
16         /// 步骤前景色
17         /// </summary>
18         [Description("步骤前景色"), Category("自定义")]
19         public Color StepForeColor
20         {
21             get { return m_stepForeColor; }
22             set { m_stepForeColor = value; }
23         }
24 
25         private Color m_stepFontColor = Color.White;
26         /// <summary>
27         /// 步骤文字颜色
28         /// </summary>
29         [Description("步骤文字景色"), Category("自定义")]
30         public Color StepFontColor
31         {
32             get { return m_stepFontColor; }
33             set { m_stepFontColor = value; }
34         }
35 
36         private int m_stepWidth = 35;
37         /// <summary>
38         /// 步骤宽度
39         /// </summary>
40         [Description("步骤宽度景色"), Category("自定义")]
41         public int StepWidth
42         {
43             get { return m_stepWidth; }
44             set { m_stepWidth = value; }
45         }
46 
47         private string[] m_steps = new string[] { "step1", "step2", "step3" };
48 
49         [Description("步骤"), Category("自定义")]
50         public string[] Steps
51         {
52             get { return m_steps; }
53             set
54             {
55                 if (m_steps == null || m_steps.Length <= 1)
56                     return;
57                 m_steps = value;
58                 Refresh();
59             }
60         }
61 
62         private int m_stepIndex = 0;
63 
64         [Description("步骤位置"), Category("自定义")]
65         public int StepIndex
66         {
67             get { return m_stepIndex; }
68             set
69             {
70                 if (m_stepIndex >= Steps.Length)
71                     return;
72                 m_stepIndex = value;
73                 Refresh();
74                 if (IndexChecked != null)
75                 {
76                     IndexChecked(this, null);
77                 }
78             }
79         }

重绘

 1  protected override void OnPaint(PaintEventArgs e)
 2         {
 3             base.OnPaint(e);
 4             var g = e.Graphics;
 5             g.SmoothingMode = SmoothingMode.AntiAlias;  //使绘图质量最高，即消除锯齿
 6             g.InterpolationMode = InterpolationMode.HighQualityBicubic;
 7             g.CompositingQuality = CompositingQuality.HighQuality;
 8 
 9             if (m_steps != null && m_steps.Length > 0)
10             {
11                 System.Drawing.SizeF sizeFirst = g.MeasureString(m_steps[0], this.Font);
12                 int y = (this.Height - m_stepWidth - 10 - (int)sizeFirst.Height) / 2;
13                 if (y < 0)
14                     y = 0;
15 
16                 int intTxtY = y + m_stepWidth + 10;
17                 int intLeft = 0;
18                 if (sizeFirst.Width > m_stepWidth)
19                 {
20                     intLeft = (int)(sizeFirst.Width - m_stepWidth) / 2 + 1;
21                 }
22 
23                 int intRight = 0;
24                 System.Drawing.SizeF sizeEnd = g.MeasureString(m_steps[m_steps.Length - 1], this.Font);
25                 if (sizeEnd.Width > m_stepWidth)
26                 {
27                     intRight = (int)(sizeEnd.Width - m_stepWidth) / 2 + 1;
28                 }
29 
30                 int intSplitWidth = 20;
31                 intSplitWidth = (this.Width - m_steps.Length - (m_steps.Length * m_stepWidth) - intRight) / (m_steps.Length - 1);
32                 if (intSplitWidth < 20)
33                     intSplitWidth = 20;
34 
35                 for (int i = 0; i < m_steps.Length; i++)
36                 {
37                     #region 画圆，横线
38                     g.FillEllipse(new SolidBrush(m_stepBackColor), new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth), y), new Size(m_stepWidth, m_stepWidth)));
39 
40                     if (m_stepIndex > i)
41                     {
42                         g.FillEllipse(new SolidBrush(m_stepForeColor), new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth) + 2, y + 2), new Size(m_stepWidth - 4, m_stepWidth - 4)));
43 
44                         if (i != m_steps.Length - 1)
45                         {
46                             if (m_stepIndex == i + 1)
47                             {
48                                 g.DrawLine(new Pen(m_stepForeColor, 2), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / 2)), new Point((i + 1) * (m_stepWidth + intSplitWidth) - intSplitWidth / 2, y + (m_stepWidth / 2)));
49                                 g.DrawLine(new Pen(m_stepBackColor, 2), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth + intSplitWidth / 2, y + (m_stepWidth / 2)), new Point((i + 1) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / 2)));
50                             }
51                             else
52                             {
53                                 g.DrawLine(new Pen(m_stepForeColor, 2), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / 2)), new Point((i + 1) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / 2)));
54                             }
55                         }
56                     }
57                     else
58                     {
59                         if (i != m_steps.Length - 1)
60                         {
61                             g.DrawLine(new Pen(m_stepBackColor, 2), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / 2)), new Point((i + 1) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / 2)));
62                         }
63                     }
64 
65                     System.Drawing.SizeF _numSize = g.MeasureString((i + 1).ToString(), this.Font);
66                     g.DrawString((i + 1).ToString(), Font, new SolidBrush(m_stepFontColor), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + (m_stepWidth - (int)_numSize.Width) / 2 + 1, y + (m_stepWidth - (int)_numSize.Height) / 2 + 1));
67                     #endregion
68 
69                     System.Drawing.SizeF sizeTxt = g.MeasureString(m_steps[i], this.Font);
70                     g.DrawString(m_steps[i], Font, new SolidBrush(m_stepIndex > i ? m_stepForeColor : m_stepBackColor), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + (m_stepWidth - (int)sizeTxt.Width) / 2 + 1, intTxtY));
71                 }
72             }
73 
74         }

全部代码

  1 using System;
  2 using System.Collections.Generic;
  3 using System.ComponentModel;
  4 using System.Drawing;
  5 using System.Data;
  6 using System.Linq;
  7 using System.Text;
  8 using System.Windows.Forms;
  9 using System.Drawing.Drawing2D;
 10 
 11 namespace HZH_Controls.Controls
 12 {
 13     public partial class UCStep : UserControl
 14     {
 15 
 16         [Description("步骤更改事件"), Category("自定义")]
 17         public event EventHandler IndexChecked;
 18 
 19         private Color m_stepBackColor = Color.FromArgb(100, 100, 100);
 20         /// <summary>
 21         /// 步骤背景色
 22         /// </summary>
 23         [Description("步骤背景色"), Category("自定义")]
 24         public Color StepBackColor
 25         {
 26             get { return m_stepBackColor; }
 27             set { m_stepBackColor = value; }
 28         }
 29 
 30         private Color m_stepForeColor = Color.FromArgb(255, 85, 51);
 31         /// <summary>
 32         /// 步骤前景色
 33         /// </summary>
 34         [Description("步骤前景色"), Category("自定义")]
 35         public Color StepForeColor
 36         {
 37             get { return m_stepForeColor; }
 38             set { m_stepForeColor = value; }
 39         }
 40 
 41         private Color m_stepFontColor = Color.White;
 42         /// <summary>
 43         /// 步骤文字颜色
 44         /// </summary>
 45         [Description("步骤文字景色"), Category("自定义")]
 46         public Color StepFontColor
 47         {
 48             get { return m_stepFontColor; }
 49             set { m_stepFontColor = value; }
 50         }
 51 
 52         private int m_stepWidth = 35;
 53         /// <summary>
 54         /// 步骤宽度
 55         /// </summary>
 56         [Description("步骤宽度景色"), Category("自定义")]
 57         public int StepWidth
 58         {
 59             get { return m_stepWidth; }
 60             set { m_stepWidth = value; }
 61         }
 62 
 63         private string[] m_steps = new string[] { "step1", "step2", "step3" };
 64 
 65         [Description("步骤"), Category("自定义")]
 66         public string[] Steps
 67         {
 68             get { return m_steps; }
 69             set
 70             {
 71                 if (m_steps == null || m_steps.Length <= 1)
 72                     return;
 73                 m_steps = value;
 74                 Refresh();
 75             }
 76         }
 77 
 78         private int m_stepIndex = 0;
 79 
 80         [Description("步骤位置"), Category("自定义")]
 81         public int StepIndex
 82         {
 83             get { return m_stepIndex; }
 84             set
 85             {
 86                 if (m_stepIndex >= Steps.Length)
 87                     return;
 88                 m_stepIndex = value;
 89                 Refresh();
 90                 if (IndexChecked != null)
 91                 {
 92                     IndexChecked(this, null);
 93                 }
 94             }
 95         }
 96 
 97         public UCStep()
 98         {
 99             InitializeComponent();
100             this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
101             this.SetStyle(ControlStyles.DoubleBuffer, true);
102             this.SetStyle(ControlStyles.ResizeRedraw, true);
103             this.SetStyle(ControlStyles.Selectable, true);
104             this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
105             this.SetStyle(ControlStyles.UserPaint, true);
106         }
107 
108         protected override void OnPaint(PaintEventArgs e)
109         {
110             base.OnPaint(e);
111             var g = e.Graphics;
112             g.SmoothingMode = SmoothingMode.AntiAlias;  //使绘图质量最高，即消除锯齿
113             g.InterpolationMode = InterpolationMode.HighQualityBicubic;
114             g.CompositingQuality = CompositingQuality.HighQuality;
115 
116             if (m_steps != null && m_steps.Length > 0)
117             {
118                 System.Drawing.SizeF sizeFirst = g.MeasureString(m_steps[0], this.Font);
119                 int y = (this.Height - m_stepWidth - 10 - (int)sizeFirst.Height) / 2;
120                 if (y < 0)
121                     y = 0;
122 
123                 int intTxtY = y + m_stepWidth + 10;
124                 int intLeft = 0;
125                 if (sizeFirst.Width > m_stepWidth)
126                 {
127                     intLeft = (int)(sizeFirst.Width - m_stepWidth) / 2 + 1;
128                 }
129 
130                 int intRight = 0;
131                 System.Drawing.SizeF sizeEnd = g.MeasureString(m_steps[m_steps.Length - 1], this.Font);
132                 if (sizeEnd.Width > m_stepWidth)
133                 {
134                     intRight = (int)(sizeEnd.Width - m_stepWidth) / 2 + 1;
135                 }
136 
137                 int intSplitWidth = 20;
138                 intSplitWidth = (this.Width - m_steps.Length - (m_steps.Length * m_stepWidth) - intRight) / (m_steps.Length - 1);
139                 if (intSplitWidth < 20)
140                     intSplitWidth = 20;
141 
142                 for (int i = 0; i < m_steps.Length; i++)
143                 {
144                     #region 画圆，横线
145                     g.FillEllipse(new SolidBrush(m_stepBackColor), new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth), y), new Size(m_stepWidth, m_stepWidth)));
146 
147                     if (m_stepIndex > i)
148                     {
149                         g.FillEllipse(new SolidBrush(m_stepForeColor), new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth) + 2, y + 2), new Size(m_stepWidth - 4, m_stepWidth - 4)));
150 
151                         if (i != m_steps.Length - 1)
152                         {
153                             if (m_stepIndex == i + 1)
154                             {
155                                 g.DrawLine(new Pen(m_stepForeColor, 2), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / 2)), new Point((i + 1) * (m_stepWidth + intSplitWidth) - intSplitWidth / 2, y + (m_stepWidth / 2)));
156                                 g.DrawLine(new Pen(m_stepBackColor, 2), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth + intSplitWidth / 2, y + (m_stepWidth / 2)), new Point((i + 1) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / 2)));
157                             }
158                             else
159                             {
160                                 g.DrawLine(new Pen(m_stepForeColor, 2), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / 2)), new Point((i + 1) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / 2)));
161                             }
162                         }
163                     }
164                     else
165                     {
166                         if (i != m_steps.Length - 1)
167                         {
168                             g.DrawLine(new Pen(m_stepBackColor, 2), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / 2)), new Point((i + 1) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / 2)));
169                         }
170                     }
171 
172                     System.Drawing.SizeF _numSize = g.MeasureString((i + 1).ToString(), this.Font);
173                     g.DrawString((i + 1).ToString(), Font, new SolidBrush(m_stepFontColor), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + (m_stepWidth - (int)_numSize.Width) / 2 + 1, y + (m_stepWidth - (int)_numSize.Height) / 2 + 1));
174                     #endregion
175 
176                     System.Drawing.SizeF sizeTxt = g.MeasureString(m_steps[i], this.Font);
177                     g.DrawString(m_steps[i], Font, new SolidBrush(m_stepIndex > i ? m_stepForeColor : m_stepBackColor), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + (m_stepWidth - (int)sizeTxt.Width) / 2 + 1, intTxtY));
178                 }
179             }
180 
181         }
182     }
183 }

View Code

 1 namespace HZH_Controls.Controls
 2 {
 3     partial class UCStep
 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.SuspendLayout();
32             // 
33             // UCStep
34             // 
35             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
36             this.BackColor = System.Drawing.Color.Transparent;
37             this.Name = "UCStep";
38             this.Size = new System.Drawing.Size(239, 80);
39             this.ResumeLayout(false);
40 
41         }
42 
43         #endregion
44     }
45 }

View Code

用处及效果

最后的话

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原文地址：https://www.cnblogs.com/bfyx/p/11368899.html

（三十六）c#Winform自定义控件-步骤控件-HZHControls

官网

前提

目录

准备工作

开始

用处及效果

最后的话