using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace Healthcare.Framework.Web.Mvc{    public class DropTreeNode    {        public string RootValue { get; set; }        public string TreeNodeID { get; set; }        public string Text { get; set; }        public string Value { get; set; }        public string ParentTreeNodeID { get; set; }        public string Css { get; set; }    }}

using System;using System.Collections;using System.Collections.Generic;using System.Linq;using System.Reflection;using System.Text;using System.Threading.Tasks;namespace Healthcare.Framework.Web.Mvc{    /// <summary>    /// 树形下拉框    /// </summary>    public class SelectTreeList    {        #region 字段        List<DropTreeNode> treeNodes = new List<DropTreeNode>();        string rootValue = http://www.mamicode.com/null;        string valueField = null;        string textField = null;        string nodeField = null;        string parentField = null;        string css = null;        string selectValue = http://www.mamicode.com/"";        bool isFinalLevel = false;        public bool IsFinalLevel        {            get { return isFinalLevel; }            set { isFinalLevel = value; }        }        public string SelectValue        {            get { return selectValue; }            set { selectValue =http://www.mamicode.com/ value; }        }        #endregion        #region 构造函数        /// <summary>        /// 构造函数        /// </summary>        /// <param name="items">项集合</param>        /// <param name="rootValue">根元素字段</param>        /// <param name="textField">显示文本字段</param>        /// <param name="nodeField">节点字段</param>        /// <param name="parentField">父节点字段</param>        public SelectTreeList(IEnumerable items, string rootValue, string textField, string nodeField, string parentField)        {            this.rootValue =http://www.mamicode.com/ rootValue;            this.valueField = nodeField;            this.textField = textField;            this.nodeField = nodeField;            this.parentField = parentField;            Validate();            Init(items);        }        /// <summary>        /// 构造函数        /// </summary>        /// <param name="items">项集合</param>        /// <param name="rootValue">根元素字段</param>        /// <param name="valueField">获取值字段</param>        /// <param name="textField">显示文本字段</param>        /// <param name="nodeField">节点字段</param>        /// <param name="parentField">父节点字段</param>        public SelectTreeList(IEnumerable items, string rootValue, string textField, string nodeField, string parentField, string valueField, string selectValue, bool isFinalLevel = false, string Css="")        {            this.rootValue =http://www.mamicode.com/ rootValue;            this.valueField = valueField;            this.textField = textField;            this.nodeField = nodeField;            this.parentField = parentField;            this.selectValue =http://www.mamicode.com/ selectValue;            this.isFinalLevel = isFinalLevel;            this.css = Css;            Validate();            Init(items);        }        #endregion        /// <summary>        /// 验证各个参数的有效性        /// </summary>        public void Validate()        {            StringBuilder sb = new StringBuilder();            if (string.IsNullOrEmpty(valueField))                sb.AppendLine("获取值字段不能为空");            if (string.IsNullOrEmpty(textField))                sb.AppendLine("显示文本字段不能为空");            if (string.IsNullOrEmpty(nodeField))                sb.AppendLine("节点字段不能为空");            if (string.IsNullOrEmpty(parentField))                sb.AppendLine("父节点字段字段不能为空");            if (sb.Length > 0)                throw new Exception("验证错误：" + sb.ToString());        }        /// <summary>        /// 初始化TreeNodes集合        /// </summary>        /// <param name="items"></param>        public void Init(IEnumerable items)        {            foreach (var item in items)            {                DropTreeNode treeNode = new DropTreeNode();                Type type = item.GetType();                PropertyInfo property = type.GetProperty(this.valueField);                object o = property.GetValue(item, null);                treeNode.Value = o.ToString();                property = type.GetProperty(this.textField);                o = property.GetValue(item, null);                treeNode.Text = o.ToString();                property = type.GetProperty(this.nodeField);                o = property.GetValue(item, null);                treeNode.TreeNodeID = o.ToString();                property = type.GetProperty(this.parentField);                o = property.GetValue(item, null);                treeNode.ParentTreeNodeID = o.ToString();                if (!string.IsNullOrEmpty(this.css))                {                    property = type.GetProperty(this.css);                    o = property.GetValue(item, null);                    treeNode.Css = o.ToString();                }                else                    treeNode.Css = "";                treeNodes.Add(treeNode);            }        }        #region 字段属性        public List<DropTreeNode> TreeNodes        {            get { return treeNodes; }            set { treeNodes = value; }        }        public string RootValue        {            get { return rootValue; }            set { rootValue =http://www.mamicode.com/ value; }        }        public string ValueField        {            get { return valueField; }            set { valueField = value; }        }        public string TextField        {            get { return textField; }            set { textField = value; }        }        public string NodeField        {            get { return nodeField; }            set { nodeField = value; }        }        public string ParentField        {            get { return parentField; }            set { parentField = value; }        }        #endregion    }}