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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
目录
https://blog.csdn.net/kwwwvagaa/article/details/100586547
用处及效果
用途：复选框
效果：
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
1 private void CheckBox_MouseDown(object sender, MouseEventArgs e)
2 {
3 Checked = !Checked;
4 }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;
}
}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