（四）C# Winform自定義控件-選擇按鈕組
（四）C# Winform自定義控件-選擇按鈕組
準(zhǔn)備工作
該控件是由多個(gè)按鈕組合形成的，類似多選框和單選框，需要用到前面我們說(shuō)到的控件UCBtnExt ，如果你對(duì)UCBtnExt 還不了解，請(qǐng)移步
請(qǐng)移步 （二）c#Winform自定義控件-按鈕 查看
我們先理一下思路，我們需要顯示多個(gè)按鈕，支持多選和單選，具有選中效果
開始
我們先看下有哪些屬性
///
/// 選中改變事件
///
public event EventHandler SelectedItemChanged;
private Dictionary<string, string> m_dataSource = new Dictionary<string, string>();
///
/// 數(shù)據(jù)源
///
public Dictionary<string, string> DataSource
{
get { return m_dataSource; }
set
{
m_dataSource = value;
Reload();
}
}
private List<string> m_selectItem = new List<string>();
///
/// 選中項(xiàng)
///
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;
///
/// 是否多選
///
public bool IsMultiple
{
get { return m_isMultiple; }
set { m_isMultiple = value; }
}
當(dāng)數(shù)據(jù)源改變的時(shí)候，需要加載按鈕到面板上
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("微軟雅黑", 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("微軟雅黑", 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);
}
如果設(shè)置了初始選中項(xiàng)，那么還需要在加載后選中
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);
}
}
}
至此所有的邏輯已經(jīng)處理完成，下面看下完整的代碼吧
// 版權(quán)所有 黃正輝 交流群：568015492 QQ：623128629
// 文件名稱：UCBtnsGroup.cs
// 創(chuàng)建日期：2019-08-15 15:58:13
// 功能描述：按鈕組
// 項(xiàng)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
{
///
/// 選中改變事件
///
public event EventHandler SelectedItemChanged;
private Dictionary<string, string> m_dataSource = new Dictionary<string, string>();
///
/// 數(shù)據(jù)源
///
public Dictionary<string, string> DataSource
{
get { return m_dataSource; }
set
{
m_dataSource = value;
Reload();
}
}
private List<string> m_selectItem = new List<string>();
///
/// 選中項(xiàng)
///
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;
///
/// 是否多選
///
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("微軟雅黑", 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("微軟雅黑", 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
{
///
/// 必需的設(shè)計(jì)器變量。
///
private System.ComponentModel.IContainer components = null;
///
/// 清理所有正在使用的資源。
///
///
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region 組件設(shè)計(jì)器生成的代碼
///
/// 設(shè)計(jì)器支持所需的方法 - 不要
/// 使用代碼編輯器修改此方法的內(nèi)容。
///
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;
}
}
用處及效果
用處： 可以用選擇按鈕組來(lái)替換單選框和復(fù)選框，具有更和諧的界面效果
效果：
最后的話
如果你喜歡的話，請(qǐng)到 https://gitee.com/kwwwvagaa/net_winform_custom_control 點(diǎn)個(gè)星星吧，另本站轉(zhuǎn)載地址：https://dotnet9.com/5270.html。
-
作者：冰封一夏 -
出處：http://www.hzhcontrols.com/doc.html -
本文版權(quán)歸作者所有，歡迎轉(zhuǎn)載，但未經(jīng)作者同意必須保留此段聲明， 且在文章頁(yè)面明顯位置給出原文連接，否則保留追究法律責(zé)任的權(quán)利。 -
GitHub：https://github.com/kwwwvagaa/NetWinformControl -
碼云：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
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