• silverlight中后台动态生成权限树结构


    前台

    <UserControl xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk
       x:Class="ttt.Leftmenu"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:controls="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls"
        mc:Ignorable="d"
        d:DesignHeight="300" d:DesignWidth="400">
        <Grid x:Name="LayoutRoot" Margin="3">

    <!--  树形标签结构定义  -->
            <controls:TreeView x:Name="menu" BorderThickness="0" Background="White" FontSize="12">
            </controls:TreeView>
        </Grid>
    </UserControl>

    后台:

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Net;
    using System.Windows;
    using System.Windows.Controls;
    using System.Windows.Documents;
    using System.Windows.Input;
    using System.Windows.Media;
    using System.Windows.Media.Animation;
    using System.Windows.Shapes;

    namespace ttt{
        public partial class Leftmenu : UserControl
        {
            #region 全局变量

            // 定义按钮点击事件给主页面调用赋值
            public MouseButtonEventHandler OnClick;
            #endregion

            #region 构造方法
            /// <summary>
            /// 构造方法
            /// </summary>
            public Leftmenu()
            {
                InitializeComponent();
                AddTreeNode(0, null);
                this.BindMenuEvent();
            }
            #endregion

            #region  Menu项绑定事件
            /// <summary>
            /// Menu项绑定事件
            /// </summary>
            void BindMenuEvent()
            {
                foreach (TreeViewItem rootItem in this.menu.Items)
                {
                    foreach (TreeViewItem item in rootItem.Items)
                    {
                        if (item.Tag != null)
                        {
                            item.MouseLeftButtonUp += new MouseButtonEventHandler(item_MouseLeftButtonUp);
                        }
                    }
                }
            }
            #endregion

            #region 页面传值
            /// <summary>
            /// 页面传值
            /// </summary>
            /// <param name="sender"></param>
            /// <param name="e"></param>
            void item_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
            {
                if (OnClick != null)
                    OnClick(sender, e);
            }
            #endregion

            #region 定义实体类
            /// <summary>
            /// 定义实体类
            /// </summary>
            public class DeciveInfo
            {
                public int DeciveID { get; set; }
                public int ParendID { get; set; }
                public string DeciveName { get; set; }
                public string pageName { get; set; }
            }
            #endregion

            #region 获得动态数据的方法
            /// <summary>
            /// 获得动态数据的方法
            /// </summary>
            /// <returns></returns>
            public List<DeciveInfo> GetForumData()
            {
                List<DeciveInfo> deviceInfoList = new List<DeciveInfo>();

                deviceInfoList.Add(new DeciveInfo() { DeciveID = 1, ParendID = 0, DeciveName = "大项一" });
                deviceInfoList.Add(new DeciveInfo() { DeciveID = 2, ParendID = 0, DeciveName = "大项二" });

                deviceInfoList.Add(new DeciveInfo() { pageName = "UserList", DeciveID = 3, ParendID = 1, DeciveName = "大项一中1" });
                deviceInfoList.Add(new DeciveInfo() { pageName = "UserList1", DeciveID = 4, ParendID = 1, DeciveName = "大项一中2" });
                deviceInfoList.Add(new DeciveInfo() { pageName = "UserList", DeciveID = 5, ParendID = 2, DeciveName = "大项二1" });
                deviceInfoList.Add(new DeciveInfo() { pageName = "UserList1", DeciveID = 6, ParendID = 2, DeciveName = "大项二2" });
                return deviceInfoList;
            }
            #endregion

            #region 添加叶子节点信息
            /// <summary>
            ///  添加叶子节点信息
            /// </summary>
            /// <param name="parentID">父亲节点信息</param>
            /// <param name="treeViewItem"></param>
            private void AddTreeNode(int parentID, TreeViewItem treeViewItem)
            {
                // 检索查询的集合
                List<DeciveInfo> result = (from deviceInfo in GetForumData() //forumList
                                           where deviceInfo.ParendID == parentID
                                           select deviceInfo).ToList<DeciveInfo>();

                // 查询结果不为空的情况下进行一下处理
                if (result.Count > 0)
                {
                    foreach (DeciveInfo deciveInf in result)
                    {
                        TreeViewItem objTreeNode = new TreeViewItem();
                        objTreeNode.Header = deciveInf.DeciveName;
                        // TODO 页面的导向
                        objTreeNode.Tag = deciveInf.pageName;
                        objTreeNode.DataContext = deciveInf;

                        //此样式将会添加的所有叶子结点上
                        objTreeNode.ItemContainerStyle = this.Resources["RedItemStyle"] as Style;

                        //添加根节点
                        if (treeViewItem == null)
                        {
                            menu.Items.Add(objTreeNode);
                        }
                        else
                        {
                            treeViewItem.Items.Add(objTreeNode);
                        }
                        //objTreeNode.is
                        AddTreeNode(deciveInf.DeciveID, objTreeNode);
                    }
                    // 给父亲节点添加属性信息
                    //objTreeNode.ItemContainerStyle = this.Resources["RedItemStyle"] as Style;
                }
            }
            #endregion
        }
    }

     以上我我做后台动态生成树形的一个操作,希望有做这个功能的朋友对你有帮助.

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  • 原文地址:https://www.cnblogs.com/northeastTycoon/p/2270855.html
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