Asp.net 菜单控件简洁版
2020-04-24 22:12:11
供稿：网友
本文介绍的菜单控件采用的css 和ul list来显示菜单，生成的html小，无需javascript支持，对大部分的浏览器都支持，除ie6要单独修改css也可以使其支持。
通过本文可以了解asp.net 控件的开发，及Composite设计模式的实际运用。
采用Composite设计模式设计菜单类：
MenuCompositeitem类
代码如下:
namespace Ruinet.Controls
{
[Serializable()]
public class MenuCompositeItem
{
private List<MenuCompositeItem> _children = new List<MenuCompositeItem>();
private string _text;
private string _link;
private string _target;
/// <summary>
/// 菜单项
/// </summary>
/// <param name="text">菜单名</param>
/// <param name="link">链接</param>
public MenuCompositeItem(string text, string link)
{
this._text = text;
this._link = link;
}
/// <summary>
/// 菜单项
/// </summary>
/// <param name="text">菜单名</param>
/// <param name="link">链接</param>
/// <param name="target">跳转目标</param>
public MenuCompositeItem(string text, string link, string target)
{
this._text = text;
this._link = link;
this._target = target;
}
/// <summary>
/// 设置或获取菜单名
/// </summary>
public string Text
{
get { return _text; }
set { _text = value; }
}
/// <summary>
/// 设置或获取链接
/// </summary>
public string Link
{
get { return _link; }
set { _link = value; }
}
/// <summary>
/// 跳转目标
/// </summary>
public string Target
{
get { return _target; }
set { _target=value; }
}
/// <summary>
/// 设置或获取子菜单
/// </summary>
public List<MenuCompositeItem> Children
{
get { return _children; }
set { _children = value; }
}
}
MenuComposite类
代码如下:
namespace Ruinet.Controls
{
[DefaultProperty("Menu")]
[ToolboxData("<{0}:MenuComposite runat=server></{0}:MenuComposite>")]
public class MenuComposite : WebControl
{
/// <summary>
/// 设置获取选择的菜单
/// </summary>
[Bindable(true)]
[DefaultValue("")]
[Localizable(true)]
public string SelectedMenuText
{
get
{
String s = (String)ViewState["SelectedMenuText"];
return ((s == null) ? String.Empty : s);
}
set
{
ViewState["SelectedMenuText"] = value;
}
}
/// <summary>
/// 获取和设置菜单项从ViewState
/// </summary>
[Bindable(true)]
[DefaultValue(null)]
[Localizable(true)]
public MenuCompositeItem MenuItems
{
get
{
return ViewState["MenuItems"] as MenuCompositeItem;
}
set
{
ViewState["MenuItems"] = value;
}
}
/// <summary>
/// 呈现菜单结构
