(五)c#Winform自定义控件-复选框

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

开始

 新增一个用户控件,命名UCCheckBox

属性如下

[Description("选中改变事件"), Category("自定义")]
        public event EventHandler CheckedChangeEvent;

        [Description("字体"), Category("自定义")]
        public override Font Font
        {
            get
            {
                return base.Font;
            }
            set
            {
                base.Font = value;
                label1.Font = value;
            }
        }

        private Color _ForeColor = Color.FromArgb(62, 62, 62);
        [Description("字体颜色"), Category("自定义")]
        public new Color ForeColor
        {
            get { return _ForeColor; }
            set
            {
                label1.ForeColor = value;
                _ForeColor = value;
            }
        }
        private string _Text = "复选框";
        [Description("文本"), Category("自定义")]
        public string TextValue
        {
            get { return _Text; }
            set
            {
                label1.Text = value;
                _Text = value;
            }
        }
        private bool _checked = false;
        [Description("是否选中"), Category("自定义")]
        public bool Checked
        {
            get
            {
                return _checked;
            }
            set
            {
                if (_checked != value)
                {
                    _checked = value;
                    if (base.Enabled)
                    {
                        if (_checked)
                        {
                            panel1.BackgroundImage = Properties.Resources.checkbox1;
                        }
                        else
                        {
                            panel1.BackgroundImage = Properties.Resources.checkbox0;
                        }
                    }
                    else
                    {
                        if (_checked)
                        {
                            panel1.BackgroundImage = Properties.Resources.checkbox10;
                        }
                        else
                        {
                            panel1.BackgroundImage = Properties.Resources.checkbox00;
                        }
                    }

                    if (CheckedChangeEvent != null)
                    {
                        CheckedChangeEvent(this, null);
                    }
                }
            }
        }

        public new bool Enabled
        {
            get
            {
                return base.Enabled;
            }
            set
            {
                base.Enabled = value;
                if (value)
                {
                    if (_checked)
                    {
                        panel1.BackgroundImage = Properties.Resources.checkbox1;
                    }
                    else
                    {
                        panel1.BackgroundImage = Properties.Resources.checkbox0;
                    }
                }
                else
                {
                    if (_checked)
                    {
                        panel1.BackgroundImage = Properties.Resources.checkbox10;
                    }
                    else
                    {
                        panel1.BackgroundImage = Properties.Resources.checkbox00;
                    }
                }
            }
        }

再来一个改变选中状态的事件

private void CheckBox_MouseDown(object sender, MouseEventArgs e)
{
    Checked = !Checked;
}

下面看下完整代码

// 版权所有  黄正辉  交流群:568015492   QQ:623128629
// 文件名称:UCCheckBox.cs
// 创建日期:2019-08-15 15:58:34
// 功能描述:CheckBox
// 项目地址:https://gitee.com/kwwwvagaa/net_winform_custom_control
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;

namespace HZH_Controls.Controls
{
    [DefaultEvent("CheckedChangeEvent")]
    public partial class UCCheckBox : UserControl
    {
        [Description("选中改变事件"), Category("自定义")]
        public event EventHandler CheckedChangeEvent;

        [Description("字体"), Category("自定义")]
        public override Font Font
        {
            get
            {
                return base.Font;
            }
            set
            {
                base.Font = value;
                label1.Font = value;
            }
        }

        private Color _ForeColor = Color.FromArgb(62, 62, 62);
        [Description("字体颜色"), Category("自定义")]
        public new Color ForeColor
        {
            get { return _ForeColor; }
            set
            {
                label1.ForeColor = value;
                _ForeColor = value;
            }
        }
        private string _Text = "复选框";
        [Description("文本"), Category("自定义")]
        public string TextValue
        {
            get { return _Text; }
            set
            {
                label1.Text = value;
                _Text = value;
            }
        }
        private bool _checked = false;
        [Description("是否选中"), Category("自定义")]
        public bool Checked
        {
            get
            {
                return _checked;
            }
            set
            {
                if (_checked != value)
                {
                    _checked = value;
                    if (base.Enabled)
                    {
                        if (_checked)
                        {
                            panel1.BackgroundImage = Properties.Resources.checkbox1;
                        }
                        else
                        {
                            panel1.BackgroundImage = Properties.Resources.checkbox0;
                        }
                    }
                    else
                    {
                        if (_checked)
                        {
                            panel1.BackgroundImage = Properties.Resources.checkbox10;
                        }
                        else
                        {
                            panel1.BackgroundImage = Properties.Resources.checkbox00;
                        }
                    }

                    if (CheckedChangeEvent != null)
                    {
                        CheckedChangeEvent(this, null);
                    }
                }
            }
        }

        public new bool Enabled
        {
            get
            {
                return base.Enabled;
            }
            set
            {
                base.Enabled = value;
                if (value)
                {
                    if (_checked)
                    {
                        panel1.BackgroundImage = Properties.Resources.checkbox1;
                    }
                    else
                    {
                        panel1.BackgroundImage = Properties.Resources.checkbox0;
                    }
                }
                else
                {
                    if (_checked)
                    {
                        panel1.BackgroundImage = Properties.Resources.checkbox10;
                    }
                    else
                    {
                        panel1.BackgroundImage = Properties.Resources.checkbox00;
                    }
                }
            }
        }
        public UCCheckBox()
        {
            InitializeComponent();
        }

        private void CheckBox_MouseDown(object sender, MouseEventArgs e)
        {
            Checked = !Checked;
        }
    }
}
namespace HZH_Controls.Controls
{
    partial class UCCheckBox
    {
        /// <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.panel1 = new System.Windows.Forms.Panel();
            this.label1 = new System.Windows.Forms.Label();
            this.SuspendLayout();
            // 
            // panel1
            // 
            this.panel1.BackgroundImage = global::HZH_Controls.Properties.Resources.checkbox0;
            this.panel1.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Zoom;
            this.panel1.Dock = System.Windows.Forms.DockStyle.Left;
            this.panel1.Location = new System.Drawing.Point(1, 1);
            this.panel1.Name = "panel1";
            this.panel1.Size = new System.Drawing.Size(18, 28);
            this.panel1.TabIndex = 0;
            this.panel1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.CheckBox_MouseDown);
            // 
            // label1
            // 
            this.label1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.label1.Font = new System.Drawing.Font("微软雅黑", 12F);
            this.label1.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(62)))), ((int)(((byte)(62)))), ((int)(((byte)(62)))));
            this.label1.Location = new System.Drawing.Point(19, 1);
            this.label1.Name = "label1";
            this.label1.Padding = new System.Windows.Forms.Padding(5, 0, 0, 0);
            this.label1.Size = new System.Drawing.Size(213, 28);
            this.label1.TabIndex = 1;
            this.label1.Text = "复选框";
            this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
            this.label1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.CheckBox_MouseDown);
            // 
            // UCCheckBox
            // 
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
            this.BackColor = System.Drawing.Color.Transparent;
            this.Controls.Add(this.label1);
            this.Controls.Add(this.panel1);
            this.Name = "UCCheckBox";
            this.Padding = new System.Windows.Forms.Padding(1);
            this.Size = new System.Drawing.Size(233, 30);
            this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.CheckBox_MouseDown);
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.Panel panel1;
        private System.Windows.Forms.Label label1;
    }
}

用处及效果

用途:复选框

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

作者:冰封一夏
出处: http://www.hzhcontrols.com/doc.html
本文版权归作者和博客园共有,欢迎转载,但未经作者同意必须保留此段声明,
且在文章页面明显位置给出原文连接,否则保留追究法律责任的权利。
GitHub:https://github.com/kwwwvagaa/NetWinformControl
码云:https://gitee.com/kwwwvagaa/net_winform_custom_control.git

原文出处:冰封一夏

原文链接:https://www.cnblogs.com/bfyx/p/11362124.html

本文观点不代表Dotnet9立场,转载请联系原作者。

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