NickLee的学习demo(父子列表清单)

         前面我有给NickLee的一个控件地址，不过在线学习没有demo我们很多时候很难下手，我做了个简单的demo，是关于父子列表清单，我们在很多时候做erp会遇见bom清单，也就是一个订单对应哪些产品，而一种产品对应哪些零部件，也就是一个产品它会有哪些材料清单。这样就会出现一个层层展开的关系，而且在设计权限的时候我们也会遇见父子权限或者上下级权限清单，在以前有用过gridview嵌套，后来找到这个控件之后就没有使用了，可以直接实现，不知道大家有没有更好的类似的控件，希望能够介绍。

   cs代码：

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using NickLee.Web.UI;
using System.Collections.Generic;
using System.Reflection;


namespace NPOI
{
    public partial class _Default : System.Web.UI.Page
    {
        #region Web Form Designer generated code
        override protected void OnInit(EventArgs e)
        {
            Grid1.NeedRebind += new Grid.NeedRebindEventHandler(OnNeedRebind);
            Grid1.NeedDataSource += new Grid.NeedDataSourceEventHandler(OnNeedDataSource);
            //加载子列表清单事件
            Grid1.NeedChildDataSource += new Grid.NeedChildDataSourceEventHandler(OnNeedChildData);
            Grid1.PageIndexChanged += new Grid.PageIndexChangedEventHandler(OnPageChanged);
            Grid1.SortCommand += new Grid.SortCommandEventHandler(OnSort);
        }
        //override protected void OnInit(EventArgs e)
        //{
        //    //
        //    // CODEGEN: This call is required by the ASP.NET Web Form Designer.
        //    //
        //    InitializeComponent();
        //    base.OnInit(e);
        //}

        ///// <summary>
        ///// Required method for Designer support - do not modify
        ///// the contents of this method with the code editor.
        ///// </summary>
        //private void InitializeComponent()
        //{
        //    //this.Load += new System.EventHandler(this.Page_Load);
            
        //}
        #endregion

        public static List<Model> ListTable=null;
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!Page.IsPostBack)
            {
                IList<Model> model = new List<Model>{
                    new Model{ParentId="001000",ChildId="001000",UserName="Bill",Department="IT",IsWork=1},
                    new Model{ParentId="001000",ChildId="001001",UserName="Bil2",Department="IT",IsWork=1},
                    new Model{ParentId="001000",ChildId="001002",UserName="Bil3",Department="IT",IsWork=1},
                    new Model{ParentId="001002",ChildId="001007",UserName="Bil4",Department="IT",IsWork=1},
                    new Model{ParentId="002000",ChildId="002000",UserName="Bil5",Department="PUR",IsWork=1},
                    new Model{ParentId="002000",ChildId="002001",UserName="Bil6",Department="PUR",IsWork=1},
                    new Model{ParentId="002001",ChildId="002002",UserName="Bil7",Department="PUR",IsWork=0},
                    new Model{ParentId="002002",ChildId="002003",UserName="Bil8",Department="PUR",IsWork=1},
                    new Model{ParentId="002002",ChildId="002004",UserName="Bil9",Department="PUR",IsWork=1},
                    new Model{ParentId="002002",ChildId="002005",UserName="Bila",Department="PUR",IsWork=1},
                    new Model{ParentId="003000",ChildId="003000",UserName="Bilc",Department="PE",IsWork=1},
                    new Model{ParentId="004000",ChildId="004000",UserName="Bilb",Department="ME",IsWork=1},
                    new Model{ParentId="004000",ChildId="004001",UserName="Bild",Department="ME",IsWork=0},
                    new Model{ParentId="004000",ChildId="004002",UserName="Bile",Department="ME",IsWork=1},
                    new Model{ParentId="004000",ChildId="004003",UserName="Bilf",Department="ME",IsWork=1}
               };
                ListTable = model as List<Model>;

                buildTopLevel();
                Grid1.DataBind();
            }
           

        }
        private void buildTopLevel()
        {
            var GetDate = from row in ListTable
                          where row.ParentId == row.ChildId
                          select new { row.ChildId, row.UserName, row.Department, row.IsWork };
            DataTable table = new DataTable("Employee");
               table=ListToDataTable(GetDate);
            Grid1.DataSource = table;
        }

        public void OnNeedRebind(object sender, EventArgs oArgs)
        {
            Grid1.DataBind();
        }

        public void OnNeedDataSource(object sender, EventArgs oArgs)
        {
            buildTopLevel();
        }
        //获得子列表
        public void OnNeedChildData(object sender, NickLee.Web.UI.GridNeedChildDataSourceEventArgs args)
        {
            var GetChildData = from row in ListTable
                               where row.ParentId == args.Item["ChildId"].ToString() && row.ChildId != args.Item["ChildId"].ToString()
                               select new { row.ChildId, row.UserName, row.Department, row.IsWork };

            DataTable oTable=new DataTable("Employee");
            oTable = ListToDataTable(GetChildData);
            args.DataSource = oTable;
        }

        public void OnPageChanged(object sender, NickLee.Web.UI.GridPageIndexChangedEventArgs oArgs)
        {
            Grid1.CurrentPageIndex = oArgs.NewIndex;
        }

        public void OnSort(object sender, NickLee.Web.UI.GridSortCommandEventArgs oArgs)
        {
            Grid1.Sort = oArgs.SortExpression;
        }


        public static DataTable ListToDataTable<T>(IEnumerable<T> data)
        {

            PropertyInfo[] ps = typeof(T).GetProperties();

            DataTable table = new DataTable();

            foreach (PropertyInfo p in ps)
            {

                table.Columns.Add(p.Name, p.PropertyType);

            }

            foreach (T t in data)
            {

                DataRow row = table.NewRow();

                foreach (PropertyInfo p in ps)
                {

                    row[p.Name] = p.GetValue(t, null);

                }

                table.Rows.Add(row);

            }

            return table;

        }  


    }
    public class Model
    {
        public string ParentId { get; set; }
        public string ChildId { get; set; }
        public string UserName { get; set; }
        public string Department { get; set; }
        public int IsWork { get; set; }
    }
}

aspx代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="NPOI._Default" %>
 <%@ Register TagPrefix="ComponentArt" Namespace="NickLee.Web.UI" Assembly="NickLee.Web.UI" %>

 <!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">
<link href="CSS/gridStyle.css" type="text/css" rel="Stylesheet"/> 
<link href="common/css/demos.css" type="text/css" rel="Stylesheet" />
    <title>未命名頁面</title>
</head>
<body>
    <form id="form1" runat="server">
    
    <div class="DemoArea">

      <ComponentArt:Grid id="Grid1"
        PreloadLevels="false"
        SelfReferencing="true"
        RunningMode="Callback"
        CssClass="GridClass"
        ShowFooter="false"
        IndentCellWidth="19"
        IndentCellCssClass="IndentCell"
        TreeLineImageWidth="19"
        TreeLineImageHeight="20"
        PageSize="15"
        ImagesBaseUrl="images/"
        TreeLineImagesFolderUrl="images/lines/"
        Width="700"
        runat="server" >
        <Levels>
          <ComponentArt:GridLevel
            DataMember="Employee"
            DataKeyField="ChildId"
            SelectedRowCssClass="SelectedRowClass"
            HeadingTextCssClass="HeadingTextClass"
            HeadingCellCssClass="HeadingCellClass"
            AlternatingRowCssClass="AlternatingRowClass"
            RowCssClass="RowClass"
            HeadingRowCssClass="HeadingRowClass"
            TableHeadingCssClass="TableHeading"
            GroupHeadingCssClass="TableHeading"
            SortDescendingImageUrl="desc.gif"
            SortAscendingImageUrl="asc.gif"
            SortImageHeight="5"
            SortImageWidth="9"
            SelectorCellCssClass="SelectorCell"
            DataCellCssClass="DataCell"
            SelectorImageUrl="selector.gif"
            SelectorCellWidth="19"
            ShowSelectorCells="true">
              <Columns>
                <ComponentArt:GridColumn DataField="ChildId"  HeadingText="EmployeeId" />
                <ComponentArt:GridColumn DataField="UserName" HeadingText="EmployeeName" />
                <ComponentArt:GridColumn DataField="Department" HeadingText="EmployeeDepartment" />
                <ComponentArt:GridColumn DataField="IsWork" HeadingText="WhetherAtWork" />
              </Columns>
          </ComponentArt:GridLevel>
          </Levels>
        </ComponentArt:Grid>
    </div>

    </form>
</body>
</html>

最后产生的结果是：

demo下载地址

NicKLee的demo下载地址