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（五十九）c#Winform自定义控件-池子（工业）-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

麻烦博客下方点个【推荐】，谢谢

NuGet

Install-Package HZH_Controls

用处及效果

准备工作

这个也是用GDI+画的，应该算是最简单的控件了，本来不打算单独写一篇文章的，但是好歹也是个控件吧，于是就写这里了

开始

添加一个类UCPond ，继承UserControl

属性

  1  /// <summary>
  2         /// The maximum value
  3         /// </summary>
  4         private decimal maxValue = 100;
  5 
  6         /// <summary>
  7         /// Gets or sets the maximum value.
  8         /// </summary>
  9         /// <value>The maximum value.</value>
 10         [Description("最大值"), Category("自定义")]
 11         public decimal MaxValue
 12         {
 13             get { return maxValue; }
 14             set
 15             {
 16                 if (value < m_value)
 17                     return;
 18                 maxValue = value;
 19                 Refresh();
 20             }
 21         }
 22 
 23         /// <summary>
 24         /// The m value
 25         /// </summary>
 26         private decimal m_value = 0;
 27 
 28         /// <summary>
 29         /// Gets or sets the value.
 30         /// </summary>
 31         /// <value>The value.</value>
 32         [Description("值"), Category("自定义")]
 33         public decimal Value
 34         {
 35             get { return m_value; }
 36             set
 37             {
 38                 if (value < 0)
 39                     return;
 40                 if (value > maxValue)
 41                     m_value = maxValue;
 42                 else
 43                     m_value = value;
 44                 Refresh();
 45             }
 46         }
 47 
 48         /// <summary>
 49         /// The wall color
 50         /// </summary>
 51         private Color wallColor = Color.FromArgb(255, 77, 59);
 52 
 53         /// <summary>
 54         /// Gets or sets the color of the wall.
 55         /// </summary>
 56         /// <value>The color of the wall.</value>
 57         [Description("池壁颜色"), Category("自定义")]
 58         public Color WallColor
 59         {
 60             get { return wallColor; }
 61             set
 62             {
 63                 wallColor = value;
 64                 Refresh();
 65             }
 66         }
 67 
 68         /// <summary>
 69         /// The wall width
 70         /// </summary>
 71         private int wallWidth = 2;
 72 
 73         /// <summary>
 74         /// Gets or sets the width of the wall.
 75         /// </summary>
 76         /// <value>The width of the wall.</value>
 77         [Description("池壁宽度"), Category("自定义")]
 78         public int WallWidth
 79         {
 80             get { return wallWidth; }
 81             set
 82             {
 83                 if (value <= 0)
 84                     return;
 85                 wallWidth = value;
 86                 Refresh();
 87             }
 88         }
 89 
 90         /// <summary>
 91         /// The liquid color
 92         /// </summary>
 93         private Color liquidColor = Color.FromArgb(3, 169, 243);
 94 
 95         [Description("液体颜色"), Category("自定义")]
 96         public Color LiquidColor
 97         {
 98             get { return liquidColor; }
 99             set { liquidColor = value; }
100         }

重绘

  protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
            if (Height <= 0)
                return;
            var g = e.Graphics;
            g.SetGDIHigh();
            int intHeight = (int)(m_value / maxValue * this.Height);
            if (intHeight != 0)
            {
                g.FillRectangle(new SolidBrush(liquidColor), new Rectangle(0, this.Height - intHeight, this.Width, intHeight));
            }
            //划边
            g.FillRectangle(new SolidBrush(wallColor), 0, 0, wallWidth, this.Height);
            g.FillRectangle(new SolidBrush(wallColor), 0, this.Height - wallWidth, this.Width, wallWidth);
            g.FillRectangle(new SolidBrush(wallColor), this.Width - wallWidth-1, 0, wallWidth, this.Height);
        }

完整代码

  1 // ***********************************************************************
  2 // Assembly         : HZH_Controls
  3 // Created          : 2019-09-06
  4 //
  5 // ***********************************************************************
  6 // <copyright file="UCPond.cs">
  7 //     Copyright by Huang Zhenghui(黄正辉) All, QQ group:568015492 QQ:623128629 Email:623128629@qq.com
  8 // </copyright>
  9 //
 10 // Blog: https://www.cnblogs.com/bfyx
 11 // GitHub：https://github.com/kwwwvagaa/NetWinformControl
 12 // gitee：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
 13 //
 14 // If you use this code, please keep this note.
 15 // ***********************************************************************
 16 using System;
 17 using System.Collections.Generic;
 18 using System.Linq;
 19 using System.Text;
 20 using System.Windows.Forms;
 21 using System.Drawing;
 22 using System.Drawing.Drawing2D;
 23 using System.ComponentModel;
 24 
 25 namespace HZH_Controls.Controls
 26 {
 27     /// <summary>
 28     /// Class UCPond.
 29     /// Implements the <see cref="System.Windows.Forms.UserControl" />
 30     /// </summary>
 31     /// <seealso cref="System.Windows.Forms.UserControl" />
 32     public class UCPond : UserControl
 33     {
 34         /// <summary>
 35         /// The maximum value
 36         /// </summary>
 37         private decimal maxValue = 100;
 38 
 39         /// <summary>
 40         /// Gets or sets the maximum value.
 41         /// </summary>
 42         /// <value>The maximum value.</value>
 43         [Description("最大值"), Category("自定义")]
 44         public decimal MaxValue
 45         {
 46             get { return maxValue; }
 47             set
 48             {
 49                 if (value < m_value)
 50                     return;
 51                 maxValue = value;
 52                 Refresh();
 53             }
 54         }
 55 
 56         /// <summary>
 57         /// The m value
 58         /// </summary>
 59         private decimal m_value = 0;
 60 
 61         /// <summary>
 62         /// Gets or sets the value.
 63         /// </summary>
 64         /// <value>The value.</value>
 65         [Description("值"), Category("自定义")]
 66         public decimal Value
 67         {
 68             get { return m_value; }
 69             set
 70             {
 71                 if (value < 0)
 72                     return;
 73                 if (value > maxValue)
 74                     m_value = maxValue;
 75                 else
 76                     m_value = value;
 77                 Refresh();
 78             }
 79         }
 80 
 81         /// <summary>
 82         /// The wall color
 83         /// </summary>
 84         private Color wallColor = Color.FromArgb(255, 77, 59);
 85 
 86         /// <summary>
 87         /// Gets or sets the color of the wall.
 88         /// </summary>
 89         /// <value>The color of the wall.</value>
 90         [Description("池壁颜色"), Category("自定义")]
 91         public Color WallColor
 92         {
 93             get { return wallColor; }
 94             set
 95             {
 96                 wallColor = value;
 97                 Refresh();
 98             }
 99         }
100 
101         /// <summary>
102         /// The wall width
103         /// </summary>
104         private int wallWidth = 2;
105 
106         /// <summary>
107         /// Gets or sets the width of the wall.
108         /// </summary>
109         /// <value>The width of the wall.</value>
110         [Description("池壁宽度"), Category("自定义")]
111         public int WallWidth
112         {
113             get { return wallWidth; }
114             set
115             {
116                 if (value <= 0)
117                     return;
118                 wallWidth = value;
119                 Refresh();
120             }
121         }
122 
123         /// <summary>
124         /// The liquid color
125         /// </summary>
126         private Color liquidColor = Color.FromArgb(3, 169, 243);
127 
128         [Description("液体颜色"), Category("自定义")]
129         public Color LiquidColor
130         {
131             get { return liquidColor; }
132             set { liquidColor = value; }
133         }
134         /// <summary>
135         /// Initializes a new instance of the <see cref="UCPond"/> class.
136         /// </summary>
137         public UCPond()
138         {
139             this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
140             this.SetStyle(ControlStyles.DoubleBuffer, true);
141             this.SetStyle(ControlStyles.ResizeRedraw, true);
142             this.SetStyle(ControlStyles.Selectable, true);
143             this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
144             this.SetStyle(ControlStyles.UserPaint, true);
145             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
146             this.Size = new Size(150, 50);
147         }
148         /// <summary>
149         /// 引发 <see cref="E:System.Windows.Forms.Control.Paint" /> 事件。
150         /// </summary>
151         /// <param name="e">包含事件数据的 <see cref="T:System.Windows.Forms.PaintEventArgs" />。</param>
152         protected override void OnPaint(PaintEventArgs e)
153         {
154             base.OnPaint(e);
155             if (Height <= 0)
156                 return;
157             var g = e.Graphics;
158             g.SetGDIHigh();
159             int intHeight = (int)(m_value / maxValue * this.Height);
160             if (intHeight != 0)
161             {
162                 g.FillRectangle(new SolidBrush(liquidColor), new Rectangle(0, this.Height - intHeight, this.Width, intHeight));
163             }
164             //划边
165             g.FillRectangle(new SolidBrush(wallColor), 0, 0, wallWidth, this.Height);
166             g.FillRectangle(new SolidBrush(wallColor), 0, this.Height - wallWidth, this.Width, wallWidth);
167             g.FillRectangle(new SolidBrush(wallColor), this.Width - wallWidth-1, 0, wallWidth, this.Height);
168         }
169     }
170 }

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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原文地址：https://www.cnblogs.com/bfyx/p/11477241.html

（五十九）c#Winform自定义控件-池子（工业）-HZHControls

官网

前提

NuGet

目录

用处及效果

准备工作

开始

最后的话