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

idkey=6e08741ef16fe53bf0314c1c9e336c4f626047943a8b76bac062361bab6b4f8d">

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

  public event EventHandler IndexChecked;

         private Color m_stepBackColor = Color.FromArgb(, , );

         /// <summary>

         /// 步骤背景色

         /// </summary>

         [Description("步骤背景色"), Category("自定义")]

         public Color StepBackColor

         {

             get { return m_stepBackColor; }

             set { m_stepBackColor = value; }

         }

         private Color m_stepForeColor = Color.FromArgb(, , );

         /// <summary>

         /// 步骤前景色

         /// </summary>

         [Description("步骤前景色"), Category("自定义")]

         public Color StepForeColor

         {

             get { return m_stepForeColor; }

             set { m_stepForeColor = value; }

         }

         private Color m_stepFontColor = Color.White;

         /// <summary>

         /// 步骤文字颜色

         /// </summary>

         [Description("步骤文字景色"), Category("自定义")]

         public Color StepFontColor

         {

             get { return m_stepFontColor; }

             set { m_stepFontColor = value; }

         }

         private int m_stepWidth = ;

         /// <summary>

         /// 步骤宽度

         /// </summary>

         [Description("步骤宽度景色"), Category("自定义")]

         public int StepWidth

         {

             get { return m_stepWidth; }

             set { m_stepWidth = value; }

         }

         private string[] m_steps = new string[] { "step1", "step2", "step3" };

         [Description("步骤"), Category("自定义")]

         public string[] Steps

         {

             get { return m_steps; }

             set

             {

                 if (m_steps == null || m_steps.Length <= )

                     return;

                 m_steps = value;

                 Refresh();

             }

         }

         private int m_stepIndex = ;

         [Description("步骤位置"), Category("自定义")]

         public int StepIndex

         {

             get { return m_stepIndex; }

             set

             {

                 if (m_stepIndex >= Steps.Length)

                     return;

                 m_stepIndex = value;

                 Refresh();

                 if (IndexChecked != null)

                 {

                     IndexChecked(this, null);

                 }

             }

         }

重绘

  protected override void OnPaint(PaintEventArgs e)

         {

             base.OnPaint(e);

             var g = e.Graphics;

             g.SmoothingMode = SmoothingMode.AntiAlias;  //使绘图质量最高，即消除锯齿

             g.InterpolationMode = InterpolationMode.HighQualityBicubic;

             g.CompositingQuality = CompositingQuality.HighQuality;

             if (m_steps != null && m_steps.Length > )

             {

                 System.Drawing.SizeF sizeFirst = g.MeasureString(m_steps[], this.Font);

                 int y = (this.Height - m_stepWidth -  - (int)sizeFirst.Height) / ;

                 if (y < )

                     y = ;

                 int intTxtY = y + m_stepWidth + ;

                 int intLeft = ;

                 if (sizeFirst.Width > m_stepWidth)

                 {

                     intLeft = (int)(sizeFirst.Width - m_stepWidth) /  + ;

                 }

                 int intRight = ;

                 System.Drawing.SizeF sizeEnd = g.MeasureString(m_steps[m_steps.Length - ], this.Font);

                 if (sizeEnd.Width > m_stepWidth)

                 {

                     intRight = (int)(sizeEnd.Width - m_stepWidth) /  + ;

                 }

                 int intSplitWidth = ;

                 intSplitWidth = (this.Width - m_steps.Length - (m_steps.Length * m_stepWidth) - intRight) / (m_steps.Length - );

                 if (intSplitWidth < )

                     intSplitWidth = ;

                 for (int i = ; i < m_steps.Length; i++)

                 {

                     #region 画圆，横线

                     g.FillEllipse(new SolidBrush(m_stepBackColor), new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth), y), new Size(m_stepWidth, m_stepWidth)));

                     if (m_stepIndex > i)

                     {

                         g.FillEllipse(new SolidBrush(m_stepForeColor), new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth) + , y + ), new Size(m_stepWidth - , m_stepWidth - )));

                         if (i != m_steps.Length - )

                         {

                             if (m_stepIndex == i + )

                             {

                                 g.DrawLine(new Pen(m_stepForeColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth) - intSplitWidth / , y + (m_stepWidth / )));

                                 g.DrawLine(new Pen(m_stepBackColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth + intSplitWidth / , y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / )));

                             }

                             else

                             {

                                 g.DrawLine(new Pen(m_stepForeColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / )));

                             }

                         }

                     }

                     else

                     {

                         if (i != m_steps.Length - )

                         {

                             g.DrawLine(new Pen(m_stepBackColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / )));

                         }

                     }

                     System.Drawing.SizeF _numSize = g.MeasureString((i + ).ToString(), this.Font);

                     g.DrawString((i + ).ToString(), Font, new SolidBrush(m_stepFontColor), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + (m_stepWidth - (int)_numSize.Width) /  + , y + (m_stepWidth - (int)_numSize.Height) /  + ));

                     #endregion

                     System.Drawing.SizeF sizeTxt = g.MeasureString(m_steps[i], this.Font);

                     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) /  + , intTxtY));

                 }

             }

         }

全部代码

 using System;

 using System.Collections.Generic;

 using System.ComponentModel;

 using System.Drawing;

 using System.Data;

 using System.Linq;

 using System.Text;

 using System.Windows.Forms;

 using System.Drawing.Drawing2D;

 namespace HZH_Controls.Controls

 {

     public partial class UCStep : UserControl

     {

         [Description("步骤更改事件"), Category("自定义")]

         public event EventHandler IndexChecked;

         private Color m_stepBackColor = Color.FromArgb(, , );

         /// <summary>

         /// 步骤背景色

         /// </summary>

         [Description("步骤背景色"), Category("自定义")]

         public Color StepBackColor

         {

             get { return m_stepBackColor; }

             set { m_stepBackColor = value; }

         }

         private Color m_stepForeColor = Color.FromArgb(, , );

         /// <summary>

         /// 步骤前景色

         /// </summary>

         [Description("步骤前景色"), Category("自定义")]

         public Color StepForeColor

         {

             get { return m_stepForeColor; }

             set { m_stepForeColor = value; }

         }

         private Color m_stepFontColor = Color.White;

         /// <summary>

         /// 步骤文字颜色

         /// </summary>

         [Description("步骤文字景色"), Category("自定义")]

         public Color StepFontColor

         {

             get { return m_stepFontColor; }

             set { m_stepFontColor = value; }

         }

         private int m_stepWidth = ;

         /// <summary>

         /// 步骤宽度

         /// </summary>

         [Description("步骤宽度景色"), Category("自定义")]

         public int StepWidth

         {

             get { return m_stepWidth; }

             set { m_stepWidth = value; }

         }

         private string[] m_steps = new string[] { "step1", "step2", "step3" };

         [Description("步骤"), Category("自定义")]

         public string[] Steps

         {

             get { return m_steps; }

             set

             {

                 if (m_steps == null || m_steps.Length <= )

                     return;

                 m_steps = value;

                 Refresh();

             }

         }

         private int m_stepIndex = ;

         [Description("步骤位置"), Category("自定义")]

         public int StepIndex

         {

             get { return m_stepIndex; }

             set

             {

                 if (m_stepIndex >= Steps.Length)

                     return;

                 m_stepIndex = value;

                 Refresh();

                 if (IndexChecked != null)

                 {

                     IndexChecked(this, null);

                 }

             }

         }

         public UCStep()

         {

             InitializeComponent();

             this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);

             this.SetStyle(ControlStyles.DoubleBuffer, true);

             this.SetStyle(ControlStyles.ResizeRedraw, true);

             this.SetStyle(ControlStyles.Selectable, true);

             this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);

             this.SetStyle(ControlStyles.UserPaint, true);

         }

         protected override void OnPaint(PaintEventArgs e)

         {

             base.OnPaint(e);

             var g = e.Graphics;

             g.SmoothingMode = SmoothingMode.AntiAlias;  //使绘图质量最高，即消除锯齿

             g.InterpolationMode = InterpolationMode.HighQualityBicubic;

             g.CompositingQuality = CompositingQuality.HighQuality;

             if (m_steps != null && m_steps.Length > )

             {

                 System.Drawing.SizeF sizeFirst = g.MeasureString(m_steps[], this.Font);

                 int y = (this.Height - m_stepWidth -  - (int)sizeFirst.Height) / ;

                 if (y < )

                     y = ;

                 int intTxtY = y + m_stepWidth + ;

                 int intLeft = ;

                 if (sizeFirst.Width > m_stepWidth)

                 {

                     intLeft = (int)(sizeFirst.Width - m_stepWidth) /  + ;

                 }

                 int intRight = ;

                 System.Drawing.SizeF sizeEnd = g.MeasureString(m_steps[m_steps.Length - ], this.Font);

                 if (sizeEnd.Width > m_stepWidth)

                 {

                     intRight = (int)(sizeEnd.Width - m_stepWidth) /  + ;

                 }

                 int intSplitWidth = ;

                 intSplitWidth = (this.Width - m_steps.Length - (m_steps.Length * m_stepWidth) - intRight) / (m_steps.Length - );

                 if (intSplitWidth < )

                     intSplitWidth = ;

                 for (int i = ; i < m_steps.Length; i++)

                 {

                     #region 画圆，横线

                     g.FillEllipse(new SolidBrush(m_stepBackColor), new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth), y), new Size(m_stepWidth, m_stepWidth)));

                     if (m_stepIndex > i)

                     {

                         g.FillEllipse(new SolidBrush(m_stepForeColor), new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth) + , y + ), new Size(m_stepWidth - , m_stepWidth - )));

                         if (i != m_steps.Length - )

                         {

                             if (m_stepIndex == i + )

                             {

                                 g.DrawLine(new Pen(m_stepForeColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth) - intSplitWidth / , y + (m_stepWidth / )));

                                 g.DrawLine(new Pen(m_stepBackColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth + intSplitWidth / , y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / )));

                             }

                             else

                             {

                                 g.DrawLine(new Pen(m_stepForeColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / )));

                             }

                         }

                     }

                     else

                     {

                         if (i != m_steps.Length - )

                         {

                             g.DrawLine(new Pen(m_stepBackColor, ), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth, y + (m_stepWidth / )), new Point((i + ) * (m_stepWidth + intSplitWidth), y + (m_stepWidth / )));

                         }

                     }

                     System.Drawing.SizeF _numSize = g.MeasureString((i + ).ToString(), this.Font);

                     g.DrawString((i + ).ToString(), Font, new SolidBrush(m_stepFontColor), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + (m_stepWidth - (int)_numSize.Width) /  + , y + (m_stepWidth - (int)_numSize.Height) /  + ));

                     #endregion

                     System.Drawing.SizeF sizeTxt = g.MeasureString(m_steps[i], this.Font);

                     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) /  + , intTxtY));

                 }

             }

         }

     }

 }

 namespace HZH_Controls.Controls

 {

     partial class UCStep

     {

         /// <summary>

         /// 必需的设计器变量。

         /// </summary>

         private System.ComponentModel.IContainer components = null;

         /// <summary>

         /// 清理所有正在使用的资源。

         /// </summary>

         /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>

         protected override void Dispose(bool disposing)

         {

             if (disposing && (components != null))

             {

                 components.Dispose();

             }

             base.Dispose(disposing);

         }

         #region 组件设计器生成的代码

         /// <summary>

         /// 设计器支持所需的方法 - 不要

         /// 使用代码编辑器修改此方法的内容。

         /// </summary>

         private void InitializeComponent()

         {

             this.SuspendLayout();

             //

             // UCStep

             //

             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;

             this.BackColor = System.Drawing.Color.Transparent;

             this.Name = "UCStep";

             this.Size = new System.Drawing.Size(, );

             this.ResumeLayout(false);

         }

         #endregion

     }

 }

用处及效果

最后的话

如果你喜欢的话，请到 https://gitee.com/kwwwvagaa/net_winform_custom_control 点个星星吧

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（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

（三十六）c#Winform自定义控件-步骤控件-HZHControls的更多相关文章

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