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  • C#优化递归树形

    html:
    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <link href="../../Scripts/bootstrap/js/bootstrap/css/bootstrap.css" rel="stylesheet" />
        <link href="../../Scripts/bootstrap/js/bootstrap/css/bootstrap-theme.min.css" rel="stylesheet" />
        <link href="../../Scripts/bootstrap/js/bootstrap-table/bootstrap-table.min.css" rel="stylesheet" />
        <link href="../../Scripts/bootstrap/js/jquery.treegrid.min.css" rel="stylesheet" />
        <script src="../../Scripts/bootstrap/js/jQuery1.11.3.min.js"></script>
        <script src="../../Scripts/bootstrap/js/bootstrap/js/bootstrap.min.js"></script>
        <script src="../../Scripts/bootstrap/js/bootstrap-table/bootstrap-table.min.js"></script>
        <script src="../../Scripts/bootstrap/js/bootstrap-table/locale/bootstrap-table-zh-CN.min.js"></script>
        <script src="../../Scripts/bootstrap/js/jquery.treegrid.js"></script>
        <script src="../../Scripts/bootstrap/js/bootstrap-table/jquery.treegrid.ajax.js"></script>
        <style>
            tr.checked-item {
                background-color: #d4e1f5 !important;
            }
        </style>
    </head>
    <body>
        <table id="table"></table>
        <script>
            $(function () {
                var name = parent.$("#FullBodyContent_MainName").val();
                var $table = $("#table");
                $table.myAjaxTreeTable({
                    url: 'treegrid.ashx?func=tree',
                    ajaxParams: { name: name,type:"sbxj" },
                    rootidValue: "",
                    striped: true,
                    expandColumn: 0,
                    columns: [
                        {
                            field: 'name',
                            title: '名称',
                        }, {
                            field: 'step',
                            title: '步骤'
                        }, {
                            field: 'required',
                            title: '关键点'
                        },
                    ],
                });
            })
    
        </script>
    </body>
    </html>
    View Code

    ashx:

    using Ext.Net;
    using System;
    using System.Collections.Generic;
    using System.Data;
    using System.Linq;
    using System.Web;
    using XLT.QC.Domain;
    using XLT.QC.Entity;
    
    namespace XLT.QC.Web.Admin.RepairAdmin
    {
        /// <summary>
        /// treegrid 的摘要说明
        /// </summary>
        public class treegrid : IHttpHandler
        {
            TestingMachineProcessDomain _testDomain = new TestingMachineProcessDomain();
            public void ProcessRequest(HttpContext context)
            {
                context.Response.ContentType = "text/plain";
                string func = context.Request["func"];
                switch (func)
                {
                    case "tree":
                        getTreeGridData(context);
                        break;
                    case "childtree":
                        getChildNodeData(context);
                        break;
                    default:
                        break;
                }
            }
    
            public void getTreeGridData(HttpContext context)
            {
                string type = context.Request["type"];
                string name = context.Request["name"];
                DataSet ds = _testDomain.getNodeData(name,type);
                List<MachineProcess> list = new List<MachineProcess>();
                for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
                {
                    MachineProcess entity = new MachineProcess();
                    entity.name = ds.Tables[0].Rows[i]["Name"].ToString();
                    entity.id = ds.Tables[0].Rows[i]["Id"].ToString();
                    entity.pid = ds.Tables[0].Rows[i]["Pid"].ToString();
                    if (!string.IsNullOrWhiteSpace(ds.Tables[0].Rows[i]["Step"].ToString()))
                    {
                        entity.step = Convert.ToInt32(ds.Tables[0].Rows[i]["Step"]);
                    }
                    if (!string.IsNullOrWhiteSpace(ds.Tables[0].Rows[i]["Level"].ToString()))
                    {
                        entity.level = Convert.ToInt32(ds.Tables[0].Rows[i]["Level"]);
                    }
                    entity.required = ds.Tables[0].Rows[i]["Required"].ToString();
                    entity.isLeaf= true;
                    list.Add(entity);
                }
                string jsonStr = JSON.Serialize(list);
                context.Response.Write(jsonStr);
            }
    
            public void getChildNodeData(HttpContext context) 
            {
                string pid = context.Request["pid"];
                string type = context.Request["type"];
                string table = "TestingMachineProcess";
                if (type=="sbxj")
                {
                    table = "ArtificialProcess";
                }
                string sql = "select Id,Pid,Name,Step,Level,QualityStandard,Required from " + table + " where Pid='" + pid + "' and (IsValid is null or IsValid=1) order by Step asc";
    
                DataSet ds = ISS.DataAccess.DbHelper.ExecuteDataSetBySql(sql);
                List<MachineProcess> list = new List<MachineProcess>();
                for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
                {
                    MachineProcess entity = new MachineProcess();
                    entity.name = ds.Tables[0].Rows[i]["Name"].ToString();
                    entity.id = ds.Tables[0].Rows[i]["Id"].ToString();
                    entity.pid = ds.Tables[0].Rows[i]["Pid"].ToString();
                    if (!string.IsNullOrWhiteSpace(ds.Tables[0].Rows[i]["Step"].ToString()))
                    {
                        entity.step = Convert.ToInt32(ds.Tables[0].Rows[i]["Step"]);
                    }
                    if (!string.IsNullOrWhiteSpace(ds.Tables[0].Rows[i]["Level"].ToString()))
                    {
                        entity.level = Convert.ToInt32(ds.Tables[0].Rows[i]["Level"]);
                    }
                    entity.required = ds.Tables[0].Rows[i]["Required"].ToString();
    
                    IDataReader dr = ISS.DataAccess.DbHelper.ExecuteReaderBySql("select COUNT(1) num from TestingMachineProcess where Pid='" + entity.id + "' ");
                    if (dr.Read())
                    {
                        if (Convert.ToInt32(dr["num"].ToString()) > 0)
                        {
                            entity.isLeaf = true;
    
                        }
                        else
                        {
                            entity.isLeaf = false;
                        }
                    }
                    
                    dr.Close();
                    dr.Dispose();
                    list.Add(entity);
                }
                
                string jsonStr = JSON.Serialize(list);
                context.Response.Write(jsonStr);
            }
            public class MachineProcess 
            {
                public string id { get; set; }
    
                /// <summary>
                /// 父节点
                /// </summary>
                public string pid { get; set; }
    
                /// <summary>
                /// 名称
                /// </summary>
                public string name { get; set; }
    
                /// <summary>
                /// 步骤
                /// </summary>
                public int step { get; set; }
    
                /// <summary>
                /// 级别
                /// </summary>
                public int level { get; set; }
    
                /// <summary>
                /// 质量标准说明
                /// </summary>
                //public string QualityStandard { get; set; }
    
                /// <summary>
                /// 
                /// </summary>
                public bool isLeaf { get; set; }
    
                /// <summary>
                /// 关键点
                /// </summary>
                public string required { get; set; }
            }
    
            public bool IsReusable
            {
                get
                {
                    return false;
                }
            }
        }
    }

    js:

    (function ($) {
        "use strict";
    
        $.fn.myAjaxTreeTable = function (options, param) {
            // 如果是调用方法
            if (typeof options == 'string') {
                return $.fn.myAjaxTreeTable.methods[options](this, param);
            }
    
            // 如果是初始化组件
            options = $.extend({}, $.fn.myAjaxTreeTable.defaults, options || {});
            // 是否有radio或checkbox
            var hasSelectItem = false;
            var target = $(this);
            // 在外层包装一下div,样式用的bootstrap-table的
            var _main_div = $("<div class='fixed-table-container'></div>");
            target.before(_main_div);
            _main_div.append(target);
            target.addClass("table table-hover treegrid-table table-bordered");
            if (options.striped) {
                target.addClass('table-striped');
            }
            // 工具条在外层包装一下div,样式用的bootstrap-table的
            if (options.toolbar) {
                var _tool_div = $("<div class='fixed-table-toolbar' style='display:none;'></div>");
                var _tool_left_div = $("<div class='bs-bars pull-left'></div>");
                _tool_left_div.append($(options.toolbar));
                _tool_div.append(_tool_left_div);
                _main_div.before(_tool_div);
            }
            // 得到根节点
            target.getRootNodes = function (data) {
    
                // 指定Root节点值
                var _root = options.rootidValue ? options.rootidValue : "";
                var result = [];
                $.each(data, function (index, item) {
                    // 这里兼容几种常见Root节点写法
                    // 默认的几种判断
                    var _defaultRootFlag = item[options.pid] == '0'
                        || item[options.pid] == 0
                        || item[options.pid] == null
                        || item[options.pid] == '';
                    if (!item[options.pid] || (_root ? (item[options.pid] == options.rootidValue) : _defaultRootFlag)) {
                        result.push(item);
                    }
                    // 添加一个默认属性,用来判断当前节点有没有被显示
                    item.isShow = false;
                });
                return result;
            };
            var j = 0;
            // 递归获取子节点并且设置子节点
            target.getChildNodes = function (data, parentNode, parentIndex, tbody) {
                $.each(data, function (i, item) {
                    if (item[options.pid] == parentNode[options.id]) {
                        var tr = $('<tr></tr>');
                        var nowParentIndex = (parentIndex + (j++) + 1);
                        tr.addClass('treegrid-' + nowParentIndex);
                        tr.addClass('treegrid-parent-' + parentIndex);
                        tr.addClass('unknow');
                        tr.attr("isLeaf", item.isLeaf);
                        tr.attr("level", item.level);
                        target.renderRow(tr, item);
                        item.isShow = true;
                        tbody.append(tr);
                        target.getChildNodes(data, item, nowParentIndex, tbody)
                    }
                });
            };
    
            target.renderChildRows = function (data, parentNode, parentIndex, tbody) {
                var html = "";
                var parentNum = $(tbody).attr('class').split(" ")[2];
                $.each(data, function (i, item) {
                    var tr = $('<tr></tr>');
                    var nowParentIndex = parentIndex;
                    tr.addClass('treegrid-' + nowParentIndex + i);
                    tr.addClass('treegrid-parent-' + parentIndex);
                    tr.addClass('unknow');
                    tr.attr("isLeaf", item.isLeaf);
                    tr.attr("level", item.level);
                    target.renderRow(tr, item);
                    item.isShow = true;
                    html += tr.get(0).outerHTML;
                });
                tbody.after(html);
            };
            // 行添加内容
            target.renderRow = function (tr, item) {
                $.each(options.columns, function (index, column) {
                    // 判断有没有选择列
                    if (index == 0 && column.field == 'selectItem') {
                        hasSelectItem = true;
                        var td = $('<td style="text-align:center;36px"></td>');
                        if (column.radio) {
                            var _ipt = $('<input name="select_item" type="radio" value="' + item[options.id] + '"></input>');
                            td.append(_ipt);
                        }
                        if (column.checkbox) {
                            var _ipt = $('<input name="select_item" type="checkbox" value="' + item[options.id] + '"></input>');
                            td.append(_ipt);
                        }
                        tr.append(td);
                    } else {
                        var html = "<td mainid='" + item[options.id] + "' style='text-align:left;'>";
                        var level = parseInt(item.level);
                        if (index == 0) {
                            if (item.pid != "") {
                                for (var i = 0; i < level; i++) {
                                    html += "<span class='treegrid-indent'></span>";
                                }
                            }
                            html += "<span class='treegrid-expander'></span>" + item[column.field] + "</td>";
                        }
                        else {
                            html += item[column.field] + "</td>";
                        }
    
                        // 增加formatter渲染
                        if (column.formatter) {
                            td.html(column.formatter.call(this, item, index));
                        }
                        tr.append($(html));
                    }
                });
            }
            // 加载数据
            target.load = function (parms) {
                // 加载数据前先清空
                target.html("");
                // 构造表头
                var thr = $('<tr></tr>');
                $.each(options.columns, function (i, item) {
                    var th = null;
                    // 判断有没有选择列
                    if (i == 0 && item.field == 'selectItem') {
                        hasSelectItem = true;
                        th = $('<th style="text-align:' + item.valign + ';36px"></th>');
                    } else {
                        th = $('<th style="text-align:' + item.valign + ';padding:10px;' + ((item.width) ? ('' + item.width) : '') + '"></th>');
                    }
                    th.text(item.title);
                    thr.append(th);
                });
                var thead = $('<thead class="treegrid-thead"></thead>');
                thead.append(thr);
                target.append(thead);
                // 构造表体
                var tbody = $('<tbody class="treegrid-tbody"></tbody>');
                target.append(tbody);
                // 添加加载loading
                var _loading = '<tr><td colspan="' + options.columns.length + '"><div style="display: block;text-align: center;">正在努力地加载数据中,请稍候……</div></td></tr>'
                tbody.html(_loading);
                // 默认高度
                if (options.height) {
                    tbody.css("height", options.height);
                }
                $.ajax({
                    type: options.type,
                    url: options.url,
                    data: parms ? parms : options.ajaxParams,
                    dataType: "JSON",
                    success: function (data, textStatus, jqXHR) {
                        // 加载完数据先清空
                        tbody.html("");
                        if (!data || data.length <= 0) {
                            var _empty = '<tr><td colspan="' + options.columns.length + '"><div style="display: block;text-align: center;">没有记录</div></td></tr>'
                            tbody.html(_empty);
                            return;
                        }
                        var rootNode = target.getRootNodes(data);
                        //console.log(rootNode);
                        $.each(rootNode, function (i, item) {
                            var tr = $('<tr></tr>');
                            tr.addClass('treegrid-' + (j + "_" + i));
                            tr.attr('load', 'true');
                            tr.attr('level', item.level);
                            tr.addClass('unknow');
                            tr.addClass('tree_rootnode');
                            target.renderRow(tr, item);
    
                            item.isShow = true;
                            tbody.append(tr);
                            target.getChildNodes(data, item, (j + "_" + i), tbody);
                        });
                        target.append(tbody);
                        // 初始化treegrid bug
                        //target.treegrid({
                        //    treeColumn: options.expandColumn ? options.expandColumn : (hasSelectItem ? 1 : 0),//如果有radio或checkbox默认第二列层级显示,当前是在用户未设置的提前下
                        //    expanderExpandedClass: options.expanderExpandedClass,
                        //    expanderCollapsedClass: options.expanderCollapsedClass
                        //});
                        //if (!options.expandAll) {
                        //    target.treegrid('collapseAll');
                        //}
                        $(".treegrid-tbody").find("tr:not(.tree_rootnode)").hide();
                        target.repainExpends();
                    },
                    error: function (xhr, textStatus) {
                        var _errorMsg = '<tr><td colspan="' + options.columns.length + '"><div style="display: block;text-align: center;">' + xhr.responseText + '</div></td></tr>'
                        tbody.html(_errorMsg);
                    }
                });
            }
            /***  初始化图标 ***/
            target.repainExpends = function (tr, reset) {
                var trExpends;
                if (tr) {
                    var str = tr.attr('class').split(" ")[0].split("-")[1];
                    var cls = "treegrid-parent-" + str;
                    trExpends = target.find("tr." + cls);
                }
                else {
                    trExpends = target.find("tr");
                }
                /*
                *  isleaf 是否有子数据
                *  load   是否已加载子数据
                */
                if (reset == "true") {
                    $.each(trExpends, function (index, item) {
                        if ($(item).attr('isLeaf') == 'true') {
                            $(item).find("span:last-child").removeClass('glyphicon-chevron-down').addClass('glyphicon-chevron-right').addClass('glyphicon');
    
                        }
                    });
                }
                else {
                    $.each(trExpends, function (index, item) {
                        if ($(item).attr('isLeaf') == 'true' && $(item).attr('load') != 'true') {
                            $(item).find("span:last-child").removeClass('glyphicon-chevron-down').addClass('glyphicon-chevron-right').addClass('glyphicon'); //收缩
                        }
                        else if ($(item).attr('isLeaf') == 'true' && $(item).attr('load') == 'true') {
                            $(item).find("span:last-child").addClass('glyphicon-chevron-down').removeClass('glyphicon-chevron-right').addClass('glyphicon'); //展开
                        }
                        else {
                            if ($(item).hasClass('tree_rootnode')) {
                                $(item).find("span:last-child").removeClass('glyphicon-chevron-down').addClass('glyphicon-chevron-right').addClass('glyphicon'); //收缩
                            } else {
                                $(item).find("span:last-child").removeClass('glyphicon-chevron-down').removeClass('glyphicon-chevron-right');  //删除图标
    
                            }
                        }
                    });
                }
            }
            /****** 加载子节点数据 start ***************/
            target.loadChilds = function (parentTR, parms) {
                debugger;
                var tbody = $(parentTR).parents(".treegrid-tbody");
                parms = $.extend({}, parms, options.ajaxParams);
                $.ajax({
                    type: options.type,
                    url: "handler/DeviceMaintainService.ashx?function=childtree",
                    data: parms,
                    dataType: "JSON",
                    success: function (data, textStatus, jqXHR) {
                        var _tr = target.find(".treegrid-" + parms.parentIndex);
                        _tr.attr('load', 'true');
                        target.renderChildRows(data, { "mainId": parms.pid }, parms.parentIndex, _tr);
                        parentTR.removeClass('unknow').addClass('know');
                        target.repainExpends(parentTR);
                    },
                    error: function (xhr, textStatus) {
                        var _errorMsg = '<tr><td colspan="' + options.columns.length + '"><div style="display: block;text-align: center;">' + xhr.responseText + '</div></td></tr>'
                        tbody.html(_errorMsg);
                    },
                });
            }
            /****** 加载子节点数据 end ***************/
            /*自定义扩展方法*/
            var customMethod = {
                collapseNode: function (parentTr) {
                    var parentNum = parentTr.attr('class').split(" ")[0].split("-")[1];
                    var childCls = "treegrid-parent-" + parentNum;
                    var child = $("tr." + childCls);
                    if (child.length > 0) {
                        child.hide();
                        for (var i = 0; i < child.length; i++) {
                            if (child.eq(i).attr("isleaf") == "true") {
                                child.eq(i).find("span.treegrid-expander").removeClass("glyphicon-chevron-down").addClass("glyphicon-chevron-right");
                            }
                            this.collapseNode(child.eq(i));
                        }
                    }
                },
                expandNode: function (parentTr) {
                    var parentNum = parentTr.attr('class').split(" ")[0].split("-")[1];
                    var childCls = "treegrid-parent-" + parentNum;
                    var child = $("tr." + childCls);
                    if (child.length > 0) {
                        child.show();
                        for (var i = 0; i < child.length; i++) {
                            if (child.eq(i).attr("isleaf") == "true") {
                                child.eq(i).find("span.treegrid-expander").removeClass("glyphicon-chevron-right").addClass("glyphicon-chevron-down");
                            }
                            //this.expandNode(child.eq(i));
                        }
                    }
                }
            }
            /*初始加载树数据*/
            if (options.url) {
                target.load();
            } else {
                // 通过data属性传递一个数据集合对组件进行初始化,
            }
    
            /*图标事件绑定*/
            $(document).on('click', 'span.glyphicon-chevron-right', function (e) {
                //console.log("right");
                if ($(this).parent().parent().attr('load') != 'true') {
                    //console.log("loadchildren函数下节点图标绑定的事件触发了");
                    $(this).removeClass("glyphicon-chevron-right").addClass("glyphicon-chevron-down");
                    $(this).parent().parent().addClass("expand").removeClass("collaps");
                    target.loadChilds(
                        $(this).parent().parent(),
                        {
                            "pid": $(this).parent().attr('mainid'),
                            "parentIndex": $(this).parent().parent().attr('class').split(" ")[0].split("-")[1],
                            "nowParentIndex": $(this).parent().parent().attr('class').split(" ")[0].split("-")[0]
                        });
                }
                else {
                    var parentTr = $(this).parent().parent();
                    //var level = parentTr.attr("level");
                    //var parentNum = parentTr.attr('class').split(" ")[0].split("-")[1];
                    //var childCls = "treegrid-parent-" + parentNum;
                    //var child = $("tr." + childCls);
                    //if (level == "0" || $(this).parent().parent().hasClass("tree_rootnode")) { //根节点
                    //    $(".treegrid-tbody").find("tr:not(.tree_rootnode)").show();                  
                    //}
                    //else {
                    //    child.show();
                    //}
                    customMethod.expandNode(parentTr);
                    $(this).removeClass("glyphicon-chevron-right").addClass("glyphicon-chevron-down");
                    $(this).parent().parent().addClass("expand").removeClass("collaps");
                    //直属子级图标初始化统一为right
                    target.repainExpends(parentTr, "true");
                }
                e.stopPropagation();
            });
    
            $(document).on('click', 'span.glyphicon-chevron-down', function (e) {
                //console.log("down");
                if ($(this).parent().parent().hasClass("expand")) {
                    //获取选中行
                    var parentTr = $(this).parent().parent();
                    //var level = parentTr.attr("level");
                    //if (level == "0" || $(this).parent().parent().hasClass("tree_rootnode")) {
                    //    $(".treegrid-tbody").find("tr:not(.tree_rootnode)").hide();
                    //}
                    //else {
                    customMethod.collapseNode(parentTr);
                    //}
                    console.log(parentTr);
                }
                else {
    
                }
                $(this).removeClass("glyphicon-chevron-down").addClass("glyphicon-chevron-right");
                $(this).parent().parent().addClass("collaps").removeClass("expand");
                e.stopPropagation();
            });
    
            $(document).on('click', '.treegrid-tbody tr', function () {
                $(".treegrid-tbody tr").removeClass("checked-item");
                var id = $(this).children(0).attr("mainid");
                $(this).addClass("checked-item");
                parent.$("#FullBodyContent_hdSelectedNodeId").val(id);
                $("#treeId").val(id);
            })
            return target;
        };
    
    
    
        // 组件方法封装
        $.fn.myAjaxTreeTable.methods = {
            // 返回选中记录的id
            getSelections: function (target) {
                var _ipt = target.find("tbody").find("tr").find("input[name='select_item']:checked");
                var chk_value = [];
                if (_ipt.attr("type") == "radio") {
                    chk_value.push({ id: _ipt.val() });
                } else {
                    _ipt.each(function (_i, _item) {
                        chk_value.push({ id: $(_item).val() });
                    });
                }
                return chk_value;
            },
            // 刷新记录
            refresh: function (target, parms) {
                if (parms) {
                    target.load(parms);
                } else {
                    target.load();
                }
            },
            // 重置表格视图
            resetHeight: function (target, height) {
                target.find("tbody").css("height", height + 'px');
            }
        };
    
        $.fn.myAjaxTreeTable.defaults = {
            id: 'id',// 选取记录返回的值
            pid: 'pid',// 用于设置父子关系
            rootidValue: null,//设置根节点id值----可指定根节点,默认为null,"",0,"0"
            data: [], // 构造table的数据集合,本地测试可以设置具体数据
            type: "GET", // 请求数据的ajax类型
            url: null, // 请求数据的ajax的url
            ajaxParams: {}, // 请求数据的ajax的data属性
            expandColumn: null,// 在哪一列上面显示展开按钮
            expandAll: false, // 是否全部展开
            striped: false, // 是否各行渐变色
            columns: [],
            toolbar: null,//顶部工具条
            height: 0,
            expanderExpandedClass: 'glyphicon glyphicon-chevron-down',// 展开的按钮的图标
            expanderCollapsedClass: 'glyphicon glyphicon-chevron-right'// 缩起的按钮的图标
        };
    })(jQuery);

    效果图:

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  • 原文地址:https://www.cnblogs.com/niesiao/p/9626483.html
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