版权声明:本文为博主原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附上原文出处链接和本声明。
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
目录
https://blog.csdn.net/kwwwvagaa/article/details/100586547
用处及效果
用处:可以用选择按钮组来替换单选框和复选框,具有更和谐的界面效果
效果:
准备工作
该控件是由多个按钮组合形成的,类似多选框和单选框,需要用到前面我们说到的控件UCBtnExt ,如果你对UCBtnExt 还不了解,请移步
我们先理一下思路,我们需要显示多个按钮,支持多选和单选,具有选中效果
开始
我们先看下有哪些属性
/// <summary>
/// 选中改变事件
/// </summary>
public event EventHandler SelectedItemChanged;
private Dictionary<string, string> m_dataSource = new Dictionary<string, string>();
/// <summary>
/// 数据源
/// </summary>
public Dictionary<string, string> DataSource
{
get { return m_dataSource; }
set
{
m_dataSource = value;
Reload();
}
}
private List<string> m_selectItem = new List<string>();
/// <summary>
/// 选中项
/// </summary>
public List<string> SelectItem
{
get { return m_selectItem; }
set
{
m_selectItem = value;
if (m_selectItem == null)
m_selectItem = new List<string>();
SetSelected();
}
}
private bool m_isMultiple = false;
/// <summary>
/// 是否多选
/// </summary>
public bool IsMultiple
{
get { return m_isMultiple; }
set { m_isMultiple = value; }
}
当数据源改变的时候,需要加载按钮到面板上
private void Reload()
{
try
{
ControlHelper.FreezeControl(flowLayoutPanel1, true);
this.flowLayoutPanel1.Controls.Clear();
if (DataSource != null)
{
foreach (var item in DataSource)
{
UCBtnExt btn = new UCBtnExt();
btn.BackColor = System.Drawing.Color.Transparent;
btn.BtnBackColor = System.Drawing.Color.White;
btn.BtnFont = new System.Drawing.Font("微软雅黑", 10F);
btn.BtnForeColor = System.Drawing.Color.Gray;
btn.BtnText = item.Value;
btn.ConerRadius = 5;
btn.Cursor = System.Windows.Forms.Cursors.Hand;
btn.FillColor = System.Drawing.Color.White;
btn.Font = new System.Drawing.Font("微软雅黑", 15F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Pixel);
btn.IsRadius = true;
btn.IsShowRect = true;
btn.IsShowTips = false;
btn.Location = new System.Drawing.Point(5, 5);
btn.Margin = new System.Windows.Forms.Padding(5);
btn.Name = item.Key;
btn.RectColor = System.Drawing.Color.FromArgb(224, 224, 224);
btn.RectWidth = 1;
btn.Size = new System.Drawing.Size(72, 38);
btn.TabStop = false;
btn.BtnClick += btn_BtnClick;
this.flowLayoutPanel1.Controls.Add(btn);
}
}
}
finally
{
ControlHelper.FreezeControl(flowLayoutPanel1, false);
}
SetSelected();
}
void btn_BtnClick(object sender, EventArgs e)
{
var btn = sender as UCBtnExt;
if (m_selectItem.Contains(btn.Name))
{
btn.RectColor = System.Drawing.Color.FromArgb(224, 224, 224);
m_selectItem.Remove(btn.Name);
}
else
{
if (!m_isMultiple)
{
foreach (var item in m_selectItem)
{
var lst = this.flowLayoutPanel1.Controls.Find(item, false);
if (lst.Length == 1)
{
var _btn = lst[0] as UCBtnExt;
_btn.RectColor = System.Drawing.Color.FromArgb(224, 224, 224);
}
}
m_selectItem.Clear();
}
btn.RectColor = System.Drawing.Color.FromArgb(255, 77, 59);
m_selectItem.Add(btn.Name);
}
if (SelectedItemChanged != null)
SelectedItemChanged(this, e);
}
如果设置了初始选中项,那么还需要在加载后选中
private void SetSelected()
{
if (m_selectItem != null && m_selectItem.Count > 0 && DataSource != null && DataSource.Count > 0)
{
try
{
ControlHelper.FreezeControl(flowLayoutPanel1, true);
if (m_isMultiple)
{
foreach (var item in m_selectItem)
{
var lst = this.flowLayoutPanel1.Controls.Find(item, false);
if (lst.Length == 1)
{
var btn = lst[0] as UCBtnExt;
btn.RectColor = System.Drawing.Color.FromArgb(255, 77, 59);
}
}
}
else
{
UCBtnExt btn = null;
foreach (var item in m_selectItem)
{
var lst = this.flowLayoutPanel1.Controls.Find(item, false);
if (lst.Length == 1)
{
btn = lst[0] as UCBtnExt;
break;
}
}
if (btn != null)
{
m_selectItem = new List<string>() { btn.Name };
btn.RectColor = System.Drawing.Color.FromArgb(255, 77, 59);
}
}
}
finally
{
ControlHelper.FreezeControl(flowLayoutPanel1, false);
}
}
}
至此所有的逻辑已经处理完成,下面看下完整的代码吧
// 版权所有 黄正辉 交流群:568015492 QQ:623128629
// 文件名称:UCBtnsGroup.cs
// 创建日期:2019-08-15 15:58:13
// 功能描述:按钮组
// 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
{
public partial class UCBtnsGroup : UserControl
{
/// <summary>
/// 选中改变事件
/// </summary>
public event EventHandler SelectedItemChanged;
private Dictionary<string, string> m_dataSource = new Dictionary<string, string>();
/// <summary>
/// 数据源
/// </summary>
public Dictionary<string, string> DataSource
{
get { return m_dataSource; }
set
{
m_dataSource = value;
Reload();
}
}
private List<string> m_selectItem = new List<string>();
/// <summary>
/// 选中项
/// </summary>
public List<string> SelectItem
{
get { return m_selectItem; }
set
{
m_selectItem = value;
if (m_selectItem == null)
m_selectItem = new List<string>();
SetSelected();
}
}
private bool m_isMultiple = false;
/// <summary>
/// 是否多选
/// </summary>
public bool IsMultiple
{
get { return m_isMultiple; }
set { m_isMultiple = value; }
}
public UCBtnsGroup()
{
InitializeComponent();
}
private void Reload()
{
try
{
ControlHelper.FreezeControl(flowLayoutPanel1, true);
this.flowLayoutPanel1.Controls.Clear();
if (DataSource != null)
{
foreach (var item in DataSource)
{
UCBtnExt btn = new UCBtnExt();
btn.BackColor = System.Drawing.Color.Transparent;
btn.BtnBackColor = System.Drawing.Color.White;
btn.BtnFont = new System.Drawing.Font("微软雅黑", 10F);
btn.BtnForeColor = System.Drawing.Color.Gray;
btn.BtnText = item.Value;
btn.ConerRadius = 5;
btn.Cursor = System.Windows.Forms.Cursors.Hand;
btn.FillColor = System.Drawing.Color.White;
btn.Font = new System.Drawing.Font("微软雅黑", 15F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Pixel);
btn.IsRadius = true;
btn.IsShowRect = true;
btn.IsShowTips = false;
btn.Location = new System.Drawing.Point(5, 5);
btn.Margin = new System.Windows.Forms.Padding(5);
btn.Name = item.Key;
btn.RectColor = System.Drawing.Color.FromArgb(224, 224, 224);
btn.RectWidth = 1;
btn.Size = new System.Drawing.Size(72, 38);
btn.TabStop = false;
btn.BtnClick += btn_BtnClick;
this.flowLayoutPanel1.Controls.Add(btn);
}
}
}
finally
{
ControlHelper.FreezeControl(flowLayoutPanel1, false);
}
SetSelected();
}
void btn_BtnClick(object sender, EventArgs e)
{
var btn = sender as UCBtnExt;
if (m_selectItem.Contains(btn.Name))
{
btn.RectColor = System.Drawing.Color.FromArgb(224, 224, 224);
m_selectItem.Remove(btn.Name);
}
else
{
if (!m_isMultiple)
{
foreach (var item in m_selectItem)
{
var lst = this.flowLayoutPanel1.Controls.Find(item, false);
if (lst.Length == 1)
{
var _btn = lst[0] as UCBtnExt;
_btn.RectColor = System.Drawing.Color.FromArgb(224, 224, 224);
}
}
m_selectItem.Clear();
}
btn.RectColor = System.Drawing.Color.FromArgb(255, 77, 59);
m_selectItem.Add(btn.Name);
}
if (SelectedItemChanged != null)
SelectedItemChanged(this, e);
}
private void SetSelected()
{
if (m_selectItem != null && m_selectItem.Count > 0 && DataSource != null && DataSource.Count > 0)
{
try
{
ControlHelper.FreezeControl(flowLayoutPanel1, true);
if (m_isMultiple)
{
foreach (var item in m_selectItem)
{
var lst = this.flowLayoutPanel1.Controls.Find(item, false);
if (lst.Length == 1)
{
var btn = lst[0] as UCBtnExt;
btn.RectColor = System.Drawing.Color.FromArgb(255, 77, 59);
}
}
}
else
{
UCBtnExt btn = null;
foreach (var item in m_selectItem)
{
var lst = this.flowLayoutPanel1.Controls.Find(item, false);
if (lst.Length == 1)
{
btn = lst[0] as UCBtnExt;
break;
}
}
if (btn != null)
{
m_selectItem = new List<string>() { btn.Name };
btn.RectColor = System.Drawing.Color.FromArgb(255, 77, 59);
}
}
}
finally
{
ControlHelper.FreezeControl(flowLayoutPanel1, false);
}
}
}
}
}
namespace HZH_Controls.Controls
{
partial class UCBtnsGroup
{
/// <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.flowLayoutPanel1 = new System.Windows.Forms.FlowLayoutPanel();
this.SuspendLayout();
//
// flowLayoutPanel1
//
this.flowLayoutPanel1.Dock = System.Windows.Forms.DockStyle.Fill;
this.flowLayoutPanel1.Location = new System.Drawing.Point(0, 0);
this.flowLayoutPanel1.Name = "flowLayoutPanel1";
this.flowLayoutPanel1.Size = new System.Drawing.Size(420, 50);
this.flowLayoutPanel1.TabIndex = 0;
//
// UCBtnsGroup
//
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
this.BackColor = System.Drawing.Color.White;
this.Controls.Add(this.flowLayoutPanel1);
this.MinimumSize = new System.Drawing.Size(0, 50);
this.Name = "UCBtnsGroup";
this.Size = new System.Drawing.Size(420, 50);
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.FlowLayoutPanel flowLayoutPanel1;
}
}
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