使用C#语言实现的查询条件界面展开和收起功能

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace SatyrAndNymph
{
public partial class FormMethod1 : Form
{
//收起状态时Panel高度
private const int HeightWhenFold = 50;
//收起状态时LinkLabel显示文字
private const string DescriptionWhenFold = "展开";
//展开状态时Panel高度
private const int HeightWhenExpand = 85;
//展开状态时LinkLabel显示文字
private const string DescriptionWhenExpand = "收起";
/// <summary>
/// 窗体构造函数
/// </summary>
public FormMethod1()
{
InitializeComponent();
//构造函数后将Panel调整为收起状态
lnkControlHeight.Text = DescriptionWhenFold;
pnlQueryConds.Height = HeightWhenFold;
}
/// <summary>
/// LinkLabel单击事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void lnkControlHeight_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
//根据显示文字为展开/收起，调整Panel的高度及LinkLabel展示文字
if (lnkControlHeight.Text == DescriptionWhenFold)
{
lnkControlHeight.Text = DescriptionWhenExpand;
pnlQueryConds.Height = HeightWhenExpand;
}
else if (lnkControlHeight.Text == DescriptionWhenExpand)
{
lnkControlHeight.Text = DescriptionWhenFold;
pnlQueryConds.Height = HeightWhenFold;
}
}
}
}

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 SatyrAndNymph
{
/// <summary>
/// 展开/收起控制器
/// </summary>
public partial class HeightController : UserControl
{
/// <summary>
/// 展开/收起控制器
/// </summary>
public HeightController()
{
InitializeComponent();
}
private void HeightController_Load(object sender, EventArgs e)
{
//设计器模式时，不触发展开/收起，否则会对设计工作造成干扰
if (!this.DesignMode)
{
//调整展开/收起情况
if (ControllerStatus == ControllerStatusEnum.FOLD)
{
Fold();
}
else if (ControllerStatus == ControllerStatusEnum.EXPAND)
{
Expand();
}
}
}
/// <summary>
/// 控制器状态
/// </summary>
private ControllerStatusEnum _controllerStatus = ControllerStatusEnum.FOLD;
///<summary>
/// 控制器状态
///</summary>
[System.ComponentModel.Description("控制器状态")]
public ControllerStatusEnum ControllerStatus
{
get
{
return _controllerStatus;
}
set
{
_controllerStatus = value;
}
}
/// <summary>
/// 父容器展开
/// </summary>
public void Expand()
{
ControllerStatus = ControllerStatusEnum.EXPAND;
if (this.Parent != null)
{
this.Parent.Height = HeightWhenExpand;
}
this.lnkHeightController.Text = DescriptionWhenExpand;
}
/// <summary>
/// 父容器收起
/// </summary>
public void Fold()
{
ControllerStatus = ControllerStatusEnum.FOLD;
if (this.Parent != null)
{
this.Parent.Height = HeightWhenFold;
}
this.lnkHeightController.Text = DescriptionWhenFold;
}
/// <summary>
/// 收起时高度
/// </summary>
private int _heightWhenFold = 50;
///<summary>
/// 收起时高度
///</summary>
[DefaultValue(50)]
[System.ComponentModel.Description("收起时高度")]
public int HeightWhenFold
{
get
{
return _heightWhenFold;
}
set
{
_heightWhenFold = value;
}
}
/// <summary>
/// 收起时显示文字
/// </summary>
private string _descriptionWhenFold = "展开";
///<summary>
/// 收起时显示文字
///</summary>
[System.ComponentModel.Description("收起时显示文字")]
public string DescriptionWhenFold
{
get
{
return _descriptionWhenFold;
}
set
{
_descriptionWhenFold = value;
}
}
/// <summary>
/// 展开时高度
/// </summary>
private int _heightWhenExpand = 85;
///<summary>
/// 展开时高度
///</summary>
[DefaultValue(85)]
[System.ComponentModel.Description("展开时高度")]
public int HeightWhenExpand
{
get
{
return _heightWhenExpand;
}
set
{
_heightWhenExpand = value;
}
}
/// <summary>
/// 展开时显示文字
/// </summary>
private string _descriptionWhenExpand = "收起";
///<summary>
/// 展开时显示文字
///</summary>
[System.ComponentModel.Description("展开时显示文字")]
public string DescriptionWhenExpand
{
get
{
return _descriptionWhenExpand;
}
set
{
_descriptionWhenExpand = value;
}
}
/// <summary>
/// 点击LinkLabel文字
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void lnkHeightController_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
if (this.Parent != null)
{
int height = this.Parent.Height;
//根据父容器高度判断父容器应是收起还是展开
if (ControllerStatus == ControllerStatusEnum.FOLD)
{
Expand();
}
else
{
Fold();
}
}
}
}
}