（八十四）c#Winform自定义控件-导航菜单（类Office菜单）
官网
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 
来都来了，点个【推荐】再走吧，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
没什么准备的，就是组装控件
开始
添加一个用户控件UCNavigationMenuOffice
添加属性
/// <summary>
/// The main menu height
/// </summary>
private int mainMenuHeight = ; /// <summary>
/// Gets or sets the height of the main menu.
/// </summary>
/// <value>The height of the main menu.</value>
[Description("主菜单高度，大于20的值"), Category("自定义")]
public int MainMenuHeight
{
get { return mainMenuHeight; }
set
{
if (value < )
return;
mainMenuHeight = value;
this.panMenu.Height = value;
}
}
/// <summary>
/// The expand height
/// </summary>
private int expandHeight = ;
/// <summary>
/// Gets or sets the height of the expand.
/// </summary>
/// <value>The height of the expand.</value>
[Description("展开后高度"), Category("自定义")]
public int ExpandHeight
{
get { return expandHeight; }
set { expandHeight = value; }
}
/// <summary>
/// The is expand
/// </summary>
private bool isExpand = true;
/// <summary>
/// Gets or sets a value indicating whether this instance is expand.
/// </summary>
/// <value><c>true</c> if this instance is expand; otherwise, <c>false</c>.</value>
[Description("是否展开"), Category("自定义")]
public bool IsExpand
{
get { return isExpand; }
set
{
isExpand = value;
if (value)
{
this.Height = expandHeight;
ResetChildControl();
}
else
{
this.Height = this.panMenu.Height;
this.panChilds.Controls.Clear();
}
}
}
/// <summary>
/// Occurs when [click itemed].
/// </summary>
[Description("点击节点事件"), Category("自定义")] public event EventHandler ClickItemed;
/// <summary>
/// The select item
/// </summary>
private NavigationMenuItemExt selectItem = null; /// <summary>
/// Gets the select item.
/// </summary>
/// <value>The select item.</value>
[Description("选中的节点"), Category("自定义")]
public NavigationMenuItemExt SelectItem
{
get { return selectItem; }
private set { selectItem = value; }
} /// <summary>
/// The items
/// </summary>
NavigationMenuItemExt[] items; /// <summary>
/// Gets or sets the items.
/// </summary>
/// <value>The items.</value>
[Description("节点列表"), Category("自定义")]
public NavigationMenuItemExt[] Items
{
get { return items; }
set
{
items = value;
ReloadMenu();
if (value != null && value.Length > )
{
selectItem = value[];
ResetChildControl();
}
}
}
/// <summary>
/// The tip color
/// </summary>
private Color tipColor = Color.FromArgb(, , ); /// <summary>
/// Gets or sets the color of the tip.
/// </summary>
/// <value>The color of the tip.</value>
[Description("角标颜色"), Category("自定义")]
public Color TipColor
{
get { return tipColor; }
set { tipColor = value; }
} /// <summary>
/// 获取或设置控件的前景色。
/// </summary>
/// <value>The color of the fore.</value>
/// <PermissionSet>
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
/// </PermissionSet>
public override System.Drawing.Color ForeColor
{
get
{
return base.ForeColor;
}
set
{
base.ForeColor = value;
foreach (Control c in this.Controls)
{
c.ForeColor = value;
}
}
}
/// <summary>
/// 获取或设置控件显示的文字的字体。
/// </summary>
/// <value>The font.</value>
/// <PermissionSet>
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence" />
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
/// </PermissionSet>
public override Font Font
{
get
{
return base.Font;
}
set
{
base.Font = value;
foreach (Control c in this.Controls)
{
c.Font = value;
}
}
} /// <summary>
/// The m LST anchors
/// </summary>
Dictionary<NavigationMenuItemExt, FrmAnchor> m_lstAnchors = new Dictionary<NavigationMenuItemExt, FrmAnchor>();
一些事件及辅助函数，处理大小改变时候和重新加载以及鼠标对应处理
/// <summary>
/// Handles the SizeChanged event of the UCNavigationMenuOffice control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
void UCNavigationMenuOffice_SizeChanged(object sender, EventArgs e)
{
if (isExpand)
{
expandHeight = this.Height;
}
} /// <summary>
/// Resets the child control.
/// </summary>
public void ResetChildControl()
{
if (isExpand)
{
if (selectItem != null)
{
try
{
ControlHelper.FreezeControl(this, true);
this.panChilds.Controls.Clear();
if (selectItem.ShowControl != null)
{
HZH_Controls.Controls.UCSplitLine_H split = new UCSplitLine_H();
split.BackColor = Color.FromArgb(, , , );
split.Dock = DockStyle.Top;
this.panChilds.Controls.Add(split);
split.BringToFront();
this.panChilds.Controls.Add(selectItem.ShowControl);
selectItem.ShowControl.Dock = DockStyle.Fill;
}
}
finally
{
ControlHelper.FreezeControl(this, false);
}
}
}
} /// <summary>
/// Reloads the menu.
/// </summary>
private void ReloadMenu()
{
try
{
ControlHelper.FreezeControl(this, true);
this.panMenu.Controls.Clear();
if (items != null && items.Length > )
{
foreach (var item in items)
{
var menu = (NavigationMenuItemExt)item;
Label lbl = new Label();
lbl.AutoSize = false;
lbl.TextAlign = ContentAlignment.MiddleCenter;
lbl.Width = menu.ItemWidth;
lbl.Text = menu.Text; lbl.Font = Font;
lbl.ForeColor = ForeColor; lbl.Paint += lbl_Paint;
lbl.MouseEnter += lbl_MouseEnter;
lbl.Tag = menu;
lbl.Click += lbl_Click;
lbl.DoubleClick += lbl_DoubleClick;
if (menu.AnchorRight)
{
lbl.Dock = DockStyle.Right;
}
else
{
lbl.Dock = DockStyle.Left;
}
this.panMenu.Controls.Add(lbl); lbl.BringToFront();
}
}
}
finally
{
ControlHelper.FreezeControl(this, false);
}
} /// <summary>
/// Handles the DoubleClick event of the lbl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
void lbl_DoubleClick(object sender, EventArgs e)
{
IsExpand = !IsExpand;
}
/// <summary>
/// Handles the Click event of the lbl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
void lbl_Click(object sender, EventArgs e)
{
Label lbl = sender as Label;
if (lbl.Tag != null)
{
var menu = (NavigationMenuItemExt)lbl.Tag;
if (menu.ShowControl == null)
{
selectItem = menu; if (ClickItemed != null)
{
ClickItemed(this, e);
}
}
else
{
if (IsExpand)
{
selectItem = menu;
ResetChildControl();
}
}
}
}
/// <summary>
/// Handles the MouseEnter event of the lbl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
void lbl_MouseEnter(object sender, EventArgs e)
{
if (!IsExpand)
{
Label lbl = sender as Label;
var menu = lbl.Tag as NavigationMenuItemExt;
foreach (var item in m_lstAnchors)
{
m_lstAnchors[item.Key].Hide();
}
if (menu.ShowControl != null)
{
if (!m_lstAnchors.ContainsKey(menu))
{
m_lstAnchors[menu] = new FrmAnchor(panMenu, menu.ShowControl, isNotFocus: false); }
m_lstAnchors[menu].BackColor = this.BackColor;
m_lstAnchors[menu].Show(this);
m_lstAnchors[menu].Size = new Size(this.panChilds.Width, expandHeight - mainMenuHeight);
}
}
}
/// <summary>
/// Handles the Paint event of the lbl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="PaintEventArgs" /> instance containing the event data.</param>
void lbl_Paint(object sender, PaintEventArgs e)
{
Label lbl = sender as Label;
if (lbl.Tag != null)
{
var menu = (NavigationMenuItemExt)lbl.Tag;
e.Graphics.SetGDIHigh(); if (menu.ShowTip)
{
if (!string.IsNullOrEmpty(menu.TipText))
{
var rect = new Rectangle(lbl.Width - , lbl.Height / - , , );
var path = rect.CreateRoundedRectanglePath();
e.Graphics.FillPath(new SolidBrush(tipColor), path);
e.Graphics.DrawString(menu.TipText, new Font("微软雅黑", 8f), new SolidBrush(Color.White), rect, new StringFormat() { Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center });
}
else
{
e.Graphics.FillEllipse(new SolidBrush(tipColor), new Rectangle(lbl.Width - , lbl.Height / - , , ));
}
}
if (menu.Icon != null)
{
e.Graphics.DrawImage(menu.Icon, new Rectangle(, (lbl.Height - ) / , , ), , , menu.Icon.Width, menu.Icon.Height, GraphicsUnit.Pixel);
}
}
}
完整代码
// ***********************************************************************
// Assembly : HZH_Controls
// Created : 2019-10-12
//
// ***********************************************************************
// <copyright file="UCNavigationMenuOffice.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.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using HZH_Controls.Forms; namespace HZH_Controls.Controls
{
/// <summary>
/// Class UCNavigationMenuOffice.
/// Implements the <see cref="System.Windows.Forms.UserControl" />
/// </summary>
/// <seealso cref="System.Windows.Forms.UserControl" />
public partial class UCNavigationMenuOffice : UserControl
{
/// <summary>
/// The main menu height
/// </summary>
private int mainMenuHeight = ; /// <summary>
/// Gets or sets the height of the main menu.
/// </summary>
/// <value>The height of the main menu.</value>
[Description("主菜单高度，大于20的值"), Category("自定义")]
public int MainMenuHeight
{
get { return mainMenuHeight; }
set
{
if (value < )
return;
mainMenuHeight = value;
this.panMenu.Height = value;
}
}
/// <summary>
/// The expand height
/// </summary>
private int expandHeight = ;
/// <summary>
/// Gets or sets the height of the expand.
/// </summary>
/// <value>The height of the expand.</value>
[Description("展开后高度"), Category("自定义")]
public int ExpandHeight
{
get { return expandHeight; }
set { expandHeight = value; }
}
/// <summary>
/// The is expand
/// </summary>
private bool isExpand = true;
/// <summary>
/// Gets or sets a value indicating whether this instance is expand.
/// </summary>
/// <value><c>true</c> if this instance is expand; otherwise, <c>false</c>.</value>
[Description("是否展开"), Category("自定义")]
public bool IsExpand
{
get { return isExpand; }
set
{
isExpand = value;
if (value)
{
this.Height = expandHeight;
ResetChildControl();
}
else
{
this.Height = this.panMenu.Height;
this.panChilds.Controls.Clear();
}
}
}
/// <summary>
/// Occurs when [click itemed].
/// </summary>
[Description("点击节点事件"), Category("自定义")] public event EventHandler ClickItemed;
/// <summary>
/// The select item
/// </summary>
private NavigationMenuItemExt selectItem = null; /// <summary>
/// Gets the select item.
/// </summary>
/// <value>The select item.</value>
[Description("选中的节点"), Category("自定义")]
public NavigationMenuItemExt SelectItem
{
get { return selectItem; }
private set { selectItem = value; }
} /// <summary>
/// The items
/// </summary>
NavigationMenuItemExt[] items; /// <summary>
/// Gets or sets the items.
/// </summary>
/// <value>The items.</value>
[Description("节点列表"), Category("自定义")]
public NavigationMenuItemExt[] Items
{
get { return items; }
set
{
items = value;
ReloadMenu();
if (value != null && value.Length > )
{
selectItem = value[];
ResetChildControl();
}
}
}
/// <summary>
/// The tip color
/// </summary>
private Color tipColor = Color.FromArgb(, , ); /// <summary>
/// Gets or sets the color of the tip.
/// </summary>
/// <value>The color of the tip.</value>
[Description("角标颜色"), Category("自定义")]
public Color TipColor
{
get { return tipColor; }
set { tipColor = value; }
} /// <summary>
/// 获取或设置控件的前景色。
/// </summary>
/// <value>The color of the fore.</value>
/// <PermissionSet>
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
/// </PermissionSet>
public override System.Drawing.Color ForeColor
{
get
{
return base.ForeColor;
}
set
{
base.ForeColor = value;
foreach (Control c in this.Controls)
{
c.ForeColor = value;
}
}
}
/// <summary>
/// 获取或设置控件显示的文字的字体。
/// </summary>
/// <value>The font.</value>
/// <PermissionSet>
/// <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
/// <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence" />
/// <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
/// </PermissionSet>
public override Font Font
{
get
{
return base.Font;
}
set
{
base.Font = value;
foreach (Control c in this.Controls)
{
c.Font = value;
}
}
} /// <summary>
/// The m LST anchors
/// </summary>
Dictionary<NavigationMenuItemExt, FrmAnchor> m_lstAnchors = new Dictionary<NavigationMenuItemExt, FrmAnchor>();
/// <summary>
/// Initializes a new instance of the <see cref="UCNavigationMenuOffice"/> class.
/// </summary>
public UCNavigationMenuOffice()
{
InitializeComponent();
this.SizeChanged += UCNavigationMenuOffice_SizeChanged;
items = new NavigationMenuItemExt[];
if (ControlHelper.IsDesignMode())
{
items = new NavigationMenuItemExt[];
for (int i = ; i < ; i++)
{
items[i] = new NavigationMenuItemExt()
{
Text = "菜单" + (i + ),
AnchorRight = i >=
};
}
}
} /// <summary>
/// Handles the SizeChanged event of the UCNavigationMenuOffice control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
void UCNavigationMenuOffice_SizeChanged(object sender, EventArgs e)
{
if (isExpand)
{
expandHeight = this.Height;
}
} /// <summary>
/// Resets the child control.
/// </summary>
public void ResetChildControl()
{
if (isExpand)
{
if (selectItem != null)
{
try
{
ControlHelper.FreezeControl(this, true);
this.panChilds.Controls.Clear();
if (selectItem.ShowControl != null)
{
HZH_Controls.Controls.UCSplitLine_H split = new UCSplitLine_H();
split.BackColor = Color.FromArgb(, , , );
split.Dock = DockStyle.Top;
this.panChilds.Controls.Add(split);
split.BringToFront();
this.panChilds.Controls.Add(selectItem.ShowControl);
selectItem.ShowControl.Dock = DockStyle.Fill;
}
}
finally
{
ControlHelper.FreezeControl(this, false);
}
}
}
} /// <summary>
/// Reloads the menu.
/// </summary>
private void ReloadMenu()
{
try
{
ControlHelper.FreezeControl(this, true);
this.panMenu.Controls.Clear();
if (items != null && items.Length > )
{
foreach (var item in items)
{
var menu = (NavigationMenuItemExt)item;
Label lbl = new Label();
lbl.AutoSize = false;
lbl.TextAlign = ContentAlignment.MiddleCenter;
lbl.Width = menu.ItemWidth;
lbl.Text = menu.Text; lbl.Font = Font;
lbl.ForeColor = ForeColor; lbl.Paint += lbl_Paint;
lbl.MouseEnter += lbl_MouseEnter;
lbl.Tag = menu;
lbl.Click += lbl_Click;
lbl.DoubleClick += lbl_DoubleClick;
if (menu.AnchorRight)
{
lbl.Dock = DockStyle.Right;
}
else
{
lbl.Dock = DockStyle.Left;
}
this.panMenu.Controls.Add(lbl); lbl.BringToFront();
}
}
}
finally
{
ControlHelper.FreezeControl(this, false);
}
} /// <summary>
/// Handles the DoubleClick event of the lbl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
void lbl_DoubleClick(object sender, EventArgs e)
{
IsExpand = !IsExpand;
}
/// <summary>
/// Handles the Click event of the lbl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
void lbl_Click(object sender, EventArgs e)
{
Label lbl = sender as Label;
if (lbl.Tag != null)
{
var menu = (NavigationMenuItemExt)lbl.Tag;
if (menu.ShowControl == null)
{
selectItem = menu; if (ClickItemed != null)
{
ClickItemed(this, e);
}
}
else
{
if (IsExpand)
{
selectItem = menu;
ResetChildControl();
}
}
}
}
/// <summary>
/// Handles the MouseEnter event of the lbl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
void lbl_MouseEnter(object sender, EventArgs e)
{
if (!IsExpand)
{
Label lbl = sender as Label;
var menu = lbl.Tag as NavigationMenuItemExt;
foreach (var item in m_lstAnchors)
{
m_lstAnchors[item.Key].Hide();
}
if (menu.ShowControl != null)
{
if (!m_lstAnchors.ContainsKey(menu))
{
m_lstAnchors[menu] = new FrmAnchor(panMenu, menu.ShowControl, isNotFocus: false); }
m_lstAnchors[menu].BackColor = this.BackColor;
m_lstAnchors[menu].Show(this);
m_lstAnchors[menu].Size = new Size(this.panChilds.Width, expandHeight - mainMenuHeight);
}
}
}
/// <summary>
/// Handles the Paint event of the lbl control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="PaintEventArgs" /> instance containing the event data.</param>
void lbl_Paint(object sender, PaintEventArgs e)
{
Label lbl = sender as Label;
if (lbl.Tag != null)
{
var menu = (NavigationMenuItemExt)lbl.Tag;
e.Graphics.SetGDIHigh(); if (menu.ShowTip)
{
if (!string.IsNullOrEmpty(menu.TipText))
{
var rect = new Rectangle(lbl.Width - , lbl.Height / - , , );
var path = rect.CreateRoundedRectanglePath();
e.Graphics.FillPath(new SolidBrush(tipColor), path);
e.Graphics.DrawString(menu.TipText, new Font("微软雅黑", 8f), new SolidBrush(Color.White), rect, new StringFormat() { Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center });
}
else
{
e.Graphics.FillEllipse(new SolidBrush(tipColor), new Rectangle(lbl.Width - , lbl.Height / - , , ));
}
}
if (menu.Icon != null)
{
e.Graphics.DrawImage(menu.Icon, new Rectangle(, (lbl.Height - ) / , , ), , , menu.Icon.Width, menu.Icon.Height, GraphicsUnit.Pixel);
}
}
}
}
}
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
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