TreeView 和 Menu 的用法

TreeView和Menu都是用于导航，且与数据库绑定时的用法也极为相近，下面给出两个实例，请比较业务层的绑定方法。

1. Tree.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Tree.aspx.cs" Inherits="NavTree"

EnableViewState="false" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<title>LeftMenu_Tree</title>

</head>

<asp:LinkButton ID="lbtExpand" runat="server" OnClick="lbtExpand_Click" ToolTip="全部展开">

全部展开

</asp:LinkButton>

<asp:LinkButton ID="lbtCollapse" runat="server" OnClick="lbtCollapse_Click" Visible="false">

全部收缩

</asp:LinkButton>

<asp:TreeView ID="tvMenu" SkinID="tvClass" runat="server" ShowLines="true" NodeWrap="false">

</asp:TreeView>

</form>

</body>

</html>

2. Tree.aspx.cs

using System;

using System.Data;

using System.Data.SqlClient;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

public partial class NavTree : System.Web.UI.Page

{

Sys.BLL.Navigation myBiz = new Sys.BLL.Navigation();

private void Page_Load(object sender, System.EventArgs e)

{

if (!Page.IsPostBack)

{

BindTree();

}

protected void BindTree()

{

//根据当前用户ID加载目录树

myBiz.BindTree(tvMenu, Framework.Globals.CurrentUser.UserID);

}

//全部展开节点

protected void lbtExpand_Click(object sender, EventArgs e)

{

tvMenu.ExpandAll();

lbtExpand.Visible = false;

lbtCollapse.Visible = true;

}

//全部折叠节点

protected void lbtCollapse_Click(object sender, EventArgs e)

{

tvMenu.CollapseAll();

lbtExpand.Visible = true;

lbtCollapse.Visible = false;

}

3. Menu.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Menu.aspx.cs" Inherits="NavMenu" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

</head>

<body>

<asp:Menu ID="Menu1" runat="server" BackColor="#f1f1f1" ForeColor="Black" Font-Size="12px"

Font-Names="宋体" BorderColor="background" BorderStyle="Solid" BorderWidth="0px"

StaticSubMenuIndent="10px" Height="20px" Orientation="Horizontal" StaticEnableDefaultPopOutImage="False">

<StaticMenuItemStyle HorizontalPadding="5px" VerticalPadding="2px" BorderWidth="1px"

BorderColor="#f1f1f1" />

<StaticHoverStyle BackColor="#cccccc" BorderColor="background" BorderStyle="Solid"

BorderWidth="1px" />

<DynamicHoverStyle BackColor="#C6DDFE" BorderColor="background" BorderStyle="Solid"

BorderWidth="0px" />

<DynamicMenuStyle BackColor="Menu" BorderStyle="Outset" BorderWidth="1px" HorizontalPadding="2px"

VerticalPadding="0px" BorderColor="MenuBar" />

</asp:Menu>

</form>

</body>

</html>

4. Menu.aspx.cs

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

public partial class NavMenu : System.Web.UI.Page

{

Sys.BLL.Navigation myBiz = new Sys.BLL.Navigation();

protected void Page_Load(object sender, EventArgs e)

{

if (!Page.IsPostBack)

{

myBiz.BindMenu(Menu1);

}

5. 业务层：App_Code/Sys.BLL.Navigation.cs

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

namespace Sys.BLL

{

/// <summary>

/// 系统导航业务层

/// </summary>

public class Navigation : Framework.BLL.BizObject

{

变量构造函数

目录树(TreeView)

导航菜单(Menu)

}//class end

}