（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

目录

https://www.cnblogs.com/bfyx/p/11364884.html

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

  /// <summary>
         /// The maximum value
         /// </summary>
         private decimal maxValue = ;

         /// <summary>
         /// Gets or sets the maximum value.
         /// </summary>
         /// <value>The maximum value.</value>
         [Description("最大值"), Category("自定义")]
         public decimal MaxValue
         {
             get { return maxValue; }
             set
             {
                 if (value < m_value)
                     return;
                 maxValue = value;
                 Refresh();
             }
         }

         /// <summary>
         /// The m value
         /// </summary>
         private decimal m_value = ;

         /// <summary>
         /// Gets or sets the value.
         /// </summary>
         /// <value>The value.</value>
         [Description("值"), Category("自定义")]
         public decimal Value
         {
             get { return m_value; }
             set
             {
                 if (value < )
                     return;
                 if (value > maxValue)
                     m_value = maxValue;
                 else
                     m_value = value;
                 Refresh();
             }
         }

         /// <summary>
         /// The wall color
         /// </summary>
         private Color wallColor = Color.FromArgb(, , );

         /// <summary>
         /// Gets or sets the color of the wall.
         /// </summary>
         /// <value>The color of the wall.</value>
         [Description("池壁颜色"), Category("自定义")]
         public Color WallColor
         {
             get { return wallColor; }
             set
             {
                 wallColor = value;
                 Refresh();
             }
         }

         /// <summary>
         /// The wall width
         /// </summary>
         private int wallWidth = ;

         /// <summary>
         /// Gets or sets the width of the wall.
         /// </summary>
         /// <value>The width of the wall.</value>
         [Description("池壁宽度"), Category("自定义")]
         public int WallWidth
         {
             get { return wallWidth; }
             set
             {
                 if (value <= )
                     return;
                 wallWidth = value;
                 Refresh();
             }
         }

         /// <summary>
         /// The liquid color
         /// </summary>
         private Color liquidColor = Color.FromArgb(, , );

         [Description("液体颜色"), Category("自定义")]
         public Color LiquidColor
         {
             get { return liquidColor; }
             set { liquidColor = value; }
         }

重绘

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

完整代码

 // ***********************************************************************
 // Assembly         : HZH_Controls
 // Created          : 2019-09-06
 //
 // ***********************************************************************
 // <copyright file="UCPond.cs">
 //     Copyright by Huang Zhenghui(黄正辉) All, QQ group:568015492 QQ:623128629 Email:623128629@qq.com
 // </copyright>
 //
 // Blog: https://www.cnblogs.com/bfyx
 // GitHub：https://github.com/kwwwvagaa/NetWinformControl
 // gitee：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
 //
 // If you use this code, please keep this note.
 // ***********************************************************************
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Windows.Forms;
 using System.Drawing;
 using System.Drawing.Drawing2D;
 using System.ComponentModel;

 namespace HZH_Controls.Controls
 {
     /// <summary>
     /// Class UCPond.
     /// Implements the <see cref="System.Windows.Forms.UserControl" />
     /// </summary>
     /// <seealso cref="System.Windows.Forms.UserControl" />
     public class UCPond : UserControl
     {
         /// <summary>
         /// The maximum value
         /// </summary>
         private decimal maxValue = ;

         /// <summary>
         /// Gets or sets the maximum value.
         /// </summary>
         /// <value>The maximum value.</value>
         [Description("最大值"), Category("自定义")]
         public decimal MaxValue
         {
             get { return maxValue; }
             set
             {
                 if (value < m_value)
                     return;
                 maxValue = value;
                 Refresh();
             }
         }

         /// <summary>
         /// The m value
         /// </summary>
         private decimal m_value = ;

         /// <summary>
         /// Gets or sets the value.
         /// </summary>
         /// <value>The value.</value>
         [Description("值"), Category("自定义")]
         public decimal Value
         {
             get { return m_value; }
             set
             {
                 if (value < )
                     return;
                 if (value > maxValue)
                     m_value = maxValue;
                 else
                     m_value = value;
                 Refresh();
             }
         }

         /// <summary>
         /// The wall color
         /// </summary>
         private Color wallColor = Color.FromArgb(, , );

         /// <summary>
         /// Gets or sets the color of the wall.
         /// </summary>
         /// <value>The color of the wall.</value>
         [Description("池壁颜色"), Category("自定义")]
         public Color WallColor
         {
             get { return wallColor; }
             set
             {
                 wallColor = value;
                 Refresh();
             }
         }

         /// <summary>
         /// The wall width
         /// </summary>
         private int wallWidth = ;

         /// <summary>
         /// Gets or sets the width of the wall.
         /// </summary>
         /// <value>The width of the wall.</value>
         [Description("池壁宽度"), Category("自定义")]
         public int WallWidth
         {
             get { return wallWidth; }
             set
             {
                 if (value <= )
                     return;
                 wallWidth = value;
                 Refresh();
             }
         }

         /// <summary>
         /// The liquid color
         /// </summary>
         private Color liquidColor = Color.FromArgb(, , );

         [Description("液体颜色"), Category("自定义")]
         public Color LiquidColor
         {
             get { return liquidColor; }
             set { liquidColor = value; }
         }
         /// <summary>
         /// Initializes a new instance of the <see cref="UCPond"/> class.
         /// </summary>
         public UCPond()
         {
             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);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
             this.Size = new Size(, );
         }
         /// <summary>
         /// 引发 <see cref="E:System.Windows.Forms.Control.Paint" /> 事件。
         /// </summary>
         /// <param name="e">包含事件数据的 <see cref="T:System.Windows.Forms.PaintEventArgs" />。</param>
         protected override void OnPaint(PaintEventArgs e)
         {
             base.OnPaint(e);
             if (Height <= )
                 return;
             var g = e.Graphics;
             g.SetGDIHigh();
             int intHeight = (int)(m_value / maxValue * this.Height);
             if (intHeight != )
             {
                 g.FillRectangle(new SolidBrush(liquidColor), new Rectangle(, this.Height - intHeight, this.Width, intHeight));
             }
             //划边
             g.FillRectangle(new SolidBrush(wallColor), , , wallWidth, this.Height);
             g.FillRectangle(new SolidBrush(wallColor), , this.Height - wallWidth, this.Width, wallWidth);
             g.FillRectangle(new SolidBrush(wallColor), this.Width - wallWidth-, , wallWidth, this.Height);
         }
     }
 }

最后的话

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