repeater纵向重复显示数据，即第一列为字段，第二、三、四。。列重复显示数据_duplicate form field id in the same form-优快云博客

本文介绍了一个使用 ASP.NET Repeater 控件显示数据的示例，通过将 DataTable 数据源映射到 Repeater 控件并自定义数据显示样式，展示了如何实现数据的分组和样式化展示。

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<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication1.WebForm1" %>

<!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 id="Head1" runat="server">
    <title>Untitled Page</title>
    <style type="text/css">
    .R
    { background-color:Red;}
    .G
    { background-color:Green;}
    .Y
    { background-color:Yellow;}
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <asp:Repeater ID="Repeater1" runat="server"
        onitemdatabound="Repeater1_ItemDataBound">
        <HeaderTemplate>
            <table border="1">
        </HeaderTemplate>
        <ItemTemplate>
            <tr>
                <td>
                    <%#Eval("LineID")%>
                </td>
                <td>
                    <asp:Repeater ID="Repeater2" runat="server">
                        <ItemTemplate><span class='<%#Eval("Flag")%>'><%#Eval("Mcid")%></span>
                            </ItemTemplate>
                    </asp:Repeater>
                </td>
            </tr>
        </ItemTemplate>
        <FooterTemplate>
            </table></FooterTemplate>
    </asp:Repeater>
    </form>
</body>
</html>

后台：

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 System.Collections.Generic;
namespace WebApplication1
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            DataTable dt = new DataTable();
            dt.Columns.Add(new DataColumn("LineID", typeof(string)));
            dt.Columns.Add(new DataColumn("Mcid", typeof(string)));
            dt.Columns.Add(new DataColumn("Flag", typeof(string)));
            dt.Rows.Add("姓名", "小黑", "G");
            dt.Rows.Add("姓名", "小张", "G");
            dt.Rows.Add("姓名", "小王", "R");
            dt.Rows.Add("姓名", "小李", "R");
            dt.Rows.Add("姓名", "小官", "G");
            dt.Rows.Add("姓名", "小李", "R");
            dt.Rows.Add("年龄", "20", "G");
            dt.Rows.Add("年龄", "30", "Y");
            dt.Rows.Add("年龄", "40", "G");
            dt.Rows.Add("年龄", "50", "Y");
            dt.Rows.Add("年龄", "60", "G");
            dt.Rows.Add("年龄", "60", "G");
            dt.Rows.Add("性别", "女", "Y");
            dt.Rows.Add("性别", "女", "G");
            dt.Rows.Add("性别", "女", "Y");
            dt.Rows.Add("性别", "女", "G");
            dt.Rows.Add("性别", "女", "Y");
            dt.Rows.Add("性别", "女", "G");
            //List<Line> list = new List<Line>();
            Dictionary<string, Line> source = new Dictionary<string, Line>();
            foreach (DataRow dr in dt.Rows)
            {
                string key = dr["LineID"].ToString();
                LineDetail linedetail = new LineDetail()
                {
                    LineID = dr["LineID"].ToString(),
                    McID = dr["Mcid"].ToString(),
                    Flag = dr["Flag"].ToString()
                };
                if (source.ContainsKey(key))
                {
                    source[key].Details.Add(linedetail);
                }
                else
                {
                    Line line = new Line()
                    {
                        LineID = key,
                        Details = new List<LineDetail>()
                    };
                    line.Details.Add(linedetail);
                    source.Add(key, line);
                }
            }
            Repeater1.DataSource = source.Values;
            Repeater1.ItemDataBound += new RepeaterItemEventHandler(Repeater1_ItemDataBound);
            Repeater1.DataBind();
        }

        protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item)
            {
                Repeater rep2 = e.Item.FindControl("Repeater2") as Repeater;
                Line line = e.Item.DataItem as Line;
                rep2.DataSource = line.Details;
                rep2.DataBind();
            }
        }
    }
    public class Line
    {
        public string LineID { get; set; }
        public IList<LineDetail> Details { get; set; }
    }
    public class LineDetail
    {
        public string LineID { get; set; }
        public string McID { get; set; }
        public string Flag { get; set; }
    }
}

效果：