TreeView 和 Menu 的用法

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

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">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>LeftMenu_Tree</title>
</head>
<body bgcolor="#DDEDFD">
    <form id="form1" runat="server">
        <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">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Top</title>
</head>
<body>
    <form id="form1" runat="server">
        <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" />
            <DynamicMenuItemStyle HorizontalPadding="2px" VerticalPadding="2px" />
        </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
}
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原文地址：https://www.cnblogs.com/wf225/p/933879.html