本文实例讲述了C#递归读取XML菜单数据的方法。分享给大家供大家参考。具体分析如下：

最近在研究一些关于C#的一些技术，纵观之前的开发项目的经验，做系统时显示系统菜单的功能总是喜欢把数据写在数据库表，然后直接读取加载到菜单树上显示。

现在想把菜单数据都放在XML里，然后递归读取XML。

由于项目使用WCF，实体类使用了两个，一个是业务逻辑层中的实体，一个是调用业务逻辑层递归方法后进行数据实体的转换，XML读取方法写在业务逻辑层中。

思路：

1.先读取XML里所有的菜单

2.根据用户的权限显示所属用户的菜单加载到页面上

XML数据如下：

复制代码 代码如下:

<"1.0" encoding="utf-8"?>

<ZCSoft.Net xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

<Applications>

<Application ID ="OA" Text="OA管理系统">

<Modules>

<Module ID="OA_System" Text="系统管理">

<Menus>

<Menu ID="OA_System_UserManager" Text="人员管理" URL="System/UserManager/UserManagerList.aspx"> </Menu>

<Menu ID="OA_System_RoleManager" Text="角色管理" URL="System/RoleManager/RoleManagerList.aspx"></Menu>

<Menu ID="OA_System_LoginLog" Text="登录日志" URL="System/Log/LoginLogList.aspx"></Menu>

<Menu ID="OA_System_OperateLog" Text="操作日志" URL="System/Log/OperateLogList.aspx"></Menu>

</Menus>

</Module>

<Module ID="OA_TargetManage" Text="目标管理">

<Menus>

<Menu ID="OA_TargetManage_TargetSetup" Text="目标设定" URL="OA/TargetManage/TargetSetupList.aspx">

</Menu>

</Menus>

</Module>

</Modules>

</Application>

</ZCSoft.Net>

菜单的业务逻辑实体类：

复制代码 代码如下:

public class MenuTreeSearchModel

{

//菜单ID

public string ItemCode { get; set; }

//菜单名称

public string ItemName { get; set; }

//菜单显示类型

public string ItemType { get; set; }

//排序

public int ItemOrder { get; set; }

//是否显示

public bool Visible { get; set; }

//菜单链接

public string ItemUrl { get; set; }

//上级ID

public string ParentItem { get; set; }

//系统平台ID

public string ApplicationCode { get; set; }

//系统平台名称

public string ApplicationName { get; set; }

//模块ID

public string ModuleCode { get; set; }

//模块名称

public string ModuleName { get; set; }

}

递归方法，读取每个模块和模块下的菜单：

复制代码 代码如下:

protected void GetChildMenuList(XElement root, List<MenuTreeSearchModel> menuTreeList)

{

var firstNode = root.FirstNode as XElement;//读取root节点内的第一个节点

if (null != firstNode)

{

//读取root节点下面同级的所有节点

var appList =

from ele in root.Element(firstNode.Name.LocalName).Elements()

select ele;

bool thisVisible = true;//默认节点是可见的

XAttribute thisAttr = root.Attribute("Display");

if (null != thisAttr)//如果菜单的上级模块有显示属性

{

string thisDisplay = thisAttr.Value;

thisVisible = thisDisplay.ToLower() == "false" ? false : true;

}

foreach (var application in appList)

{

//模块Display属性

XAttribute modAttr = application.Attribute("Display");

bool visible = true;

if (null != modAttr)

{

string display = application.Attribute("Display").Value;

visible = display.ToLower() == "false" ? false : true;

}

var nextNode = application.FirstNode as XElement;//该节点的下级节点

string itemType = "Folder";//目录还是菜单

string itemUrl = null;//链接地址

string parentItem = null;//上一节点ID

string applicationCode = null;//平台编码

string applicationName = null;//平台名称

string moduleCode = null;//模块编码

string moduleName = null;//模块名称

if (application.Name.LocalName == "Application")

{

applicationCode = application.Attribute("ID").Value;

applicationName = application.Attribute("Text").Value;

}

if (application.Name.LocalName == "Module")

{

moduleCode = application.Attribute("ID").Value;

moduleName = application.Attribute("Text").Value;

applicationCode = root.Attribute("ID").Value;

applicationName = root.Attribute("Text").Value;

if (thisVisible) //如果该模块的所属平台中的Display属性设置为可见true（注意：没有设置则默认为可见），则模块的上级为Application的ID

{

parentItem = root.Attribute("ID").Value;

}

}

if (application.Name.LocalName == "Menu")

{

itemType = "Menu";

itemUrl = application.Attribute("URL").Value;

moduleCode = root.Attribute("ID").Value;

moduleName = root.Attribute("Text").Value;

applicationCode = root.Parent.Parent.Attribute("ID").Value;

applicationName = root.Parent.Parent.Attribute("Text").Value;

if (thisVisible) //如果该菜单的所属模块中的Display属性设置为可见true（注意：没有设置则默认为可见），则菜单的上级为Module的ID

{

parentItem = root.Attribute("ID").Value;

}

else//如果该菜单的所属模块中的Display属性设置为不可见false，则菜单的上级为Application的ID

{

parentItem = root.Parent.Parent.Attribute("ID").Value;

}

}

MenuTreeSearchModel model = new MenuTreeSearchModel();

model.ItemCode = application.Attribute("ID").Value;

model.ItemName = application.Attribute("Text").Value;

model.ItemType = itemType;

model.ItemOrder = 0;

model.Visible = visible;

model.ItemUrl = itemUrl;

model.ParentItem = parentItem;

model.ApplicationCode = applicationCode;

model.ApplicationName = applicationName;

model.ModuleCode = moduleCode;

model.ModuleName = moduleName;

menuTreeList.Add(model);

if (null != nextNode)//如果还有下级节点

{

//调用递归

GetChildMenuList(application, menuTreeList);

}

}

}

}

从XML文档读取：

复制代码 代码如下:

/// <summary>

/// 从XML文件读取菜单节点

/// </summary>

/// <returns></returns>

public List<MenuTreeSearchModel> GetMenuTreeByReadXML()

{

List<MenuTreeSearchModel> list = new List<MenuTreeSearchModel>();

//读取XML文档路径，这里我把XML放在网站的bin目录里

string xmlPath = AppDomain.CurrentDomain.BaseDirectory + "Foundation.xml";

XElement root = XElement.Load(xmlPath);

var appList =

from ele in root.Element("Applications").Elements()

select ele;

//按系统平台筛选

foreach (var application in appList)

{

MenuTreeSearchModel model = new MenuTreeSearchModel();

model.ItemCode = application.Attribute("ID").Value;

model.ItemName = application.Attribute("Text").Value;

model.ItemType = "Folder";

model.ItemOrder = 0;

model.Visible = true;

model.ItemUrl = null;

model.ParentItem = null;

model.ApplicationCode = application.Attribute("ID").Value;

model.ApplicationName = application.Attribute("Text").Value;

model.ModuleCode = null;

model.ModuleName = null;

list.Add(model);

//递归调用

GetChildMenuList(application, list);

}

return list;

}

以下是在调用服务契约方法时进行的实体类：

复制代码 代码如下:

public class PublicUserMenuTreeData

{

//菜单ID

public string ItemCode { get; set; }

//菜单名称

public string ItemName { get; set; }

//菜单显示类型

public string ItemType { get; set; }

//排序

public int ItemOrder { get; set; }

//是否显示

public bool Visible { get; set; }

//菜单链接

public string ItemUrl { get; set; }

//上级ID

public string ParentItem { get; set; }

//系统平台ID

public string ApplicationCode { get; set; }

//系统平台名称

public string ApplicationName { get; set; }

//模块ID

public string ModuleCode { get; set; }

//模块名称

public string ModuleName { get; set; }

//当前菜单下的菜单集合

public List<PublicUserMenuTreeData> UserMenuTreeDatas { set; get; }

}

实体转换方法：

复制代码 代码如下:

public PublicUserMenuTreeData TransferUserMenuTreeToPublicUserMenu(MenuTreeData userMenuTreeData)

{

PublicUserMenuTreeData pubUserMenuTreeData = new PublicUserMenuTreeData();

pubUserMenuTreeData.ItemCode = userMenuTreeData.ItemCode;

pubUserMenuTreeData.ItemName = userMenuTreeData.ItemName;

pubUserMenuTreeData.ItemType = userMenuTreeData.ItemType;

pubUserMenuTreeData.ItemOrder = userMenuTreeData.ItemOrder;

pubUserMenuTreeData.Visible = userMenuTreeData.Visible;

pubUserMenuTreeData.ItemUrl = userMenuTreeData.ItemUrl;

pubUserMenuTreeData.ParentItem = userMenuTreeData.ParentItem;

pubUserMenuTreeData.ApplicationCode = userMenuTreeData.ApplicationCode;

pubUserMenuTreeData.ApplicationName = userMenuTreeData.ApplicationName;

pubUserMenuTreeData.ModuleCode = userMenuTreeData.ModuleCode;

pubUserMenuTreeData.ModuleName = userMenuTreeData.ModuleName;

return pubUserMenuTreeData;

}

用户权限菜单方法：

复制代码 代码如下:

/// <summary>

/// 有用户权限树获取共用的用户菜单列表

/// </summary>

/// <param name="listAllUserMenu"></param>

/// <returns></returns>

public List<PublicUserMenuTreeData> GetPublicUserMenuFromUserMenuTreeData(List<MenuTreeData> listAllUserMenu)

{

List<PublicUserMenuTreeData> listPublicUserMenuTreeData = new List<PublicUserMenuTreeData>();

List<MenuTreeData> list = listAllUserMenu.FindAll(d => string.IsNullOrEmpty(d.ParentItem)).ToList();

foreach (var userMenuTreeData in list)

{

PublicUserMenuTreeData pubUserMenuTreeData = TransferUserMenuTreeToPublicUserMenu(userMenuTreeData);

pubUserMenuTreeData.UserMenuTreeDatas = GetChildData(pubUserMenuTreeData.ItemCode, listAllUserMenu);

listPublicUserMenuTreeData.Add(pubUserMenuTreeData);

}

return listPublicUserMenuTreeData;

}

public List<PublicUserMenuTreeData> GetChildData(string parentId, List<MenuTreeData> listUserMenuTreeData)

{

List<MenuTreeData> list = listUserMenuTreeData.FindAll(d => d.ParentItem == parentId).ToList();

if (list.Count > 0)

{

List<PublicUserMenuTreeData> listPublicUserMenuTreeData = new List<PublicUserMenuTreeData>();

foreach (var userMenuTreeData in list)

{

PublicUserMenuTreeData pubUserMenuTreeData = TransferUserMenuTreeToPublicUserMenu(userMenuTreeData);

pubUserMenuTreeData.UserMenuTreeDatas = GetChildData(pubUserMenuTreeData.ItemCode, listUserMenuTreeData);

listPublicUserMenuTreeData.Add(pubUserMenuTreeData);

}

return listPublicUserMenuTreeData;

}

return null;

}

系统菜单类：

复制代码 代码如下:

/// <summary>

/// 系统菜单

/// </summary>

[DataContract()]

public class MenuTreeData

{

[DataMember()]

public string ItemCode { get; set; }

[DataMember()]

public string ItemName { get; set; }

[DataMember()]

public string ItemType { get; set; }

[DataMember()]

public int ItemOrder { get; set; }

[DataMember()]

public bool Visible { get; set; }

[DataMember()]

public string ItemUrl { get; set; }

[DataMember()]

public string ParentItem { get; set; }

[DataMember()]

public string ApplicationCode { get; set; }

[DataMember()]

public string ApplicationName { get; set; }

[DataMember()]

public string ModuleCode { get; set; }

[DataMember()]

public string ModuleName { get; set; }

}

后台页面加载Load代码：

复制代码 代码如下:

string menuData = string.Empty;

var treeList= GetMenuTreeList();

if (treeList!= null)

{

List<MenuTreeData> listAllUserMenu = treeList.FindAll(d => d.Visible).OrderBy(d => d.ItemOrder).ToList();

List<PublicUserMenuTreeData> listPublicUserMenuTreeData = GetPublicUserMenuFromUserMenuTreeData(listAllUserMenu);

menuData = JsonConvert.SerializeObject(listPublicUserMenuTreeData);

}

页面加载脚本，这里使用Jquery：

复制代码 代码如下:

var obj = menuData;

GetMenuInfo(obj);

function GetMenuInfo(obj) {

var str = "";

var objInfo = "";

if (obj) {

objInfo = obj.split("|");

if (objInfo[0] != "") {

var PublicUserMenuTreeData = JSON.parse(objInfo[0]);

for (var i = 0; i < PublicUserMenuTreeData.length; i++) {

str += ("<li>");

var tempmenu= PublicUserMenuTreeData[i];

if (tempmenu.ItemType && tempmenu.ItemType == "Menu") {

str += ("<a href='#' onclick='" + tempmenu.ItemCode + "()' id='" + tempmenu.ItemCode + "'>" + tempmenu.ItemName + "</a>");

str += ("<script> function " + tempmenu.ItemCode);

str += ("() { tabframe1.newTab({ title: '" + tempmenu.ItemName + "',");

if (tempmenu.ItemUrl.indexOf('?') != -1) {

str += ("src: '" + tempmenu.ItemUrl + "&applicationid=" + tempmenu.ApplicationCode + "&moduleid=" + tempmenu.ModuleCode + "',");

} else {

str += ("src: '" + tempmenu.ItemUrl + "" + tempmenu.ApplicationCode + "&moduleid=" + tempmenu.ModuleCode + "',");

}

str += (" id: 'oa-system-" + tempmenu.ItemCode + "',");

str += (" closable: true }); jQuery('#mainmenulist').hide(); return false; }</script>");

} else {

str += ("<a href='#' id='" + PublicUserMenuTreeData[i].ItemCode + "'>" + PublicUserMenuTreeData[i].ItemName + "</a>");

}

if (PublicUserMenuTreeData[i].UserMenuTreeDatas) {

str += GetRecurrenceData(PublicUserMenuTreeData[i].UserMenuTreeDatas);

}

str += (" </li>");

}

}

}

function GetRecurrenceData(listPublicUserMenuTreeData) {

var str = "";

if (listPublicUserMenuTreeData && listPublicUserMenuTreeData.length>0) {

str += (" <ul>");

for (var j = 0; j < listPublicUserMenuTreeData.length; j++) {

str += ("<li>");

if (listPublicUserMenuTreeData[j].ItemType && listPublicUserMenuTreeData[j].ItemType == "Menu") {

str += ("<a href='#' onclick='" + listPublicUserMenuTreeData[j].ItemCode + "()' id='" + listPublicUserMenuTreeData[j].ItemCode + "'>" + listPublicUserMenuTreeData[j].ItemName + "</a>");

str += ("<script> function " + listPublicUserMenuTreeData[j].ItemCode);

str += ("() { tabframe1.newTab({ title: '" + listPublicUserMenuTreeData[j].ItemName + "',");

if (listPublicUserMenuTreeData[j].ItemUrl.indexOf('?') != -1) {

str += ("src: '" + listPublicUserMenuTreeData[j].ItemUrl + "&applicationid=" + listPublicUserMenuTreeData[j].ApplicationCode + "&moduleid=" + listPublicUserMenuTreeData[j].ModuleCode + "',");

} else {

str += ("src: '" + listPublicUserMenuTreeData[j].ItemUrl + "" + listPublicUserMenuTreeData[j].ApplicationCode + "&moduleid=" + listPublicUserMenuTreeData[j].ModuleCode + "',");

}

str += (" id: 'oa-system-" + listPublicUserMenuTreeData[j].ItemCode + "',");

str += (" closable: true }); jQuery('#mainmenulist').hide(); return false; }</script>");

} else {

str += ("<a href='#' id='" + listPublicUserMenuTreeData[j].ItemCode + "'>" + listPublicUserMenuTreeData[j].ItemName + "</a>");

}

var ListMenuDatas = listPublicUserMenuTreeData[j].UserMenuTreeDatas;

str += GetRecurrenceData(ListMenuDatas);

str += ("</li>");

}

str += (" </ul>");

}

return str;

}

效果图：

这里补充一下：菜单中如果在模块Module里设置属性Display="false"，则模块不显示出来，可是模块下的菜单可显示出来。

itemType="Folder"显示类型是目录，itemType="Menu"显示类型是菜单

希望本文所述对大家的C#程序设计有所帮助。