105 lines
2.8 KiB
C#
105 lines
2.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.Linq;
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using System.Text;
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using DevExpress.XtraNavBar;
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namespace WMS.Ctrl
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{
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public partial class MyNavBarGroup : NavBarGroup
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{
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public MyNavBarGroup()
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: base()
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{
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}
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public MyNavBarGroup(string caption)
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: base(caption)
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{
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}
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//重写展开折叠属性,在set中触发自己定义的事件
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private bool _Expanded = false;
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/// <summary>
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/// 展开折叠属性
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/// </summary>
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public override bool Expanded
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{
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get
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{
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return _Expanded;
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}
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set
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{
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//触发改变之前的事件
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CancelEventArgs args = new CancelEventArgs() { Cancel = false };
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OnExpandChanging(args);
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//是否可以展开,是否取消,是否与上次一值想等
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if (CanExpand && !args.Cancel && _Expanded != value)
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{
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base.Expanded = _Expanded = value;
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//触发修改之后的事件
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OnExpandChanged(new ExpandedEventArgs(value));
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}
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}
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}
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//自己加了一个属性,是否能够折叠或者展开,有的时候我们需要这个功能
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private bool _CanExpand = true;
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/// <summary>
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/// 是否能够展开折叠(为false时,则不能展开或者折叠)
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/// </summary>
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public virtual bool CanExpand
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{
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get { return _CanExpand; }
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set { _CanExpand = value; }
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}
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/// <summary>
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/// 展开或者折叠之后
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/// </summary>
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public event EventHandler<ExpandedEventArgs> ExpandChanged;
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protected virtual void OnExpandChanged(ExpandedEventArgs e)
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{
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if (ExpandChanged != null)
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{
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ExpandChanged(this, e);
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}
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}
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/// <summary>
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/// 展开或者折叠之前
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/// </summary>
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public event EventHandler<CancelEventArgs> ExpandChanging;
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protected virtual void OnExpandChanging(CancelEventArgs e)
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{
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if (ExpandChanging != null)
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{
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ExpandChanging(this, e);
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}
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}
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}
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public class ExpandedEventArgs : EventArgs
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{
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public ExpandedEventArgs()
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{
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Expanded = false;
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}
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public ExpandedEventArgs(bool expanded)
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{
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Expanded = expanded;
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}
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/// <summary>
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/// 展开或者折叠
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/// </summary>
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public bool Expanded { get; set; }
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}
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}
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