Question

我有一个XML文件，我想创建一个DataTable并将其绑定到GridView，但必须根据属性而不是标记从XML文件中获取数据。第一个属性是“m”，它表示行索引。另一个属性是“s”，它表示列索引。如果某些标记中未提及该属性，则其默认值为“1”

输出必须以GridView的形式显示

 <asp:GridView id="grdBank" runat="server" AutoGenerateColumns="False" CellPadding="0" >
    <Columns>

      <asp:BoundField HeaderText="Repay date" DataField="repay">
        <HeaderStyle Font-Bold="True"></HeaderStyle>                
      </asp:BoundField>

      <asp:BoundField HeaderText="Interest" DataField="interest">
        <HeaderStyle Font-Bold="True"></HeaderStyle>                
      </asp:BoundField>

      <asp:BoundField HeaderText="Penalty interest" DataField="penalty_interest">
         <HeaderStyle Font-Bold="True"></HeaderStyle>               
      </asp:BoundField>

      <asp:BoundField HeaderText="Penalty spread" DataField="penalty_spread">
         <HeaderStyle Font-Bold="True"></HeaderStyle>               
      </asp:BoundField>

      <asp:BoundField HeaderText="Others (CE+CS)" DataField="others">
        <HeaderStyle Font-Bold="True"></HeaderStyle>                
      </asp:BoundField>
    </Columns>

xml文件是

<row>
<c24>20160201</c24>
<c24 m="2">20160131</c24>
<c24 m="3">20160101</c24>
<c24 m="4">20151231</c24>
<c24 m="5">20151201</c24>
<c24 m="6">20151130</c24>
<c24 m="7">20151102</c24>
</row>



<row>
<c28>IN</c28>
<c28 m="1" s="2">PE</c28>
<c28 m="1" s="3">PS</c28>

<c28 m="2">PR</c28>
<c28 m="2" s="2">PE</c28>
<c28 m="2" s="3">PS</c28>

<c28 m="3">IN</c28>
<c28 m="3" s="2">PE</c28>
<c28 m="3" s="3">PS</c28>
<c28 m="3" s="4">CE</c28>
<c28 m="3" s="5">CS</c28>

<c28 m="4">PR</c28>
<c28 m="4" s="2">PE</c28>
<c28 m="4" s="3">PS</c28>
<c28 m="4" s="4">CE</c28>
<c28 m="4" s="5">CS</c28>

<c28 m="5">IN</c28>
<c28 m="5" s="2">PE</c28>
<c28 m="5" s="3">PS</c28>
<c28 m="5" s="4">CE</c28>
<c28 m="5" s="5">CS</c28>

<c28 m="6">PR</c28>
<c28 m="6" s="2">PE</c28>
<c28 m="6" s="3">PS</c28>
<c28 m="6" s="4">CE</c28>
<c28 m="6" s="5">CS</c28>

<c28 m="7">PR</c28>
<c28 m="7" s="2">PE</c28>
<c28 m="7" s="3">PS</c28>
<c28 m="7" s="4">CE</c28>
<c28 m="7" s="5">CS</c28>
</row>




<row>
<c29>1334.564</c29>
<c29 m="1" s="2">9.509</c29>
<c29 m="1" s="3">3.003</c29>

<c29 m="2">3900</c29>
<c29 m="2" s="2">28.817</c29>
<c29 m="2" s="3">9.1</c29>

<c29 m="3">1366.468</c29>
<c29 m="3" s="2">10.097</c29>
<c29 m="3" s="3">3.189</c29>
<c29 m="3" s="4">10.818</c29>
<c29 m="3" s="5">3.416</c29>

<c29 m="4">3900</c29>
<c29 m="4" s="2">28.817</c29>
<c29 m="4" s="3">9.1</c29>
<c29 m="4" s="4">31.904</c29>
<c29 m="4" s="5">10.075</c29>

<c29 m="5">1353.571</c29>
<c29 m="5" s="2">10.001</c29>
<c29 m="5" s="3">3.159</c29>
<c29 m="5" s="4">21.789</c29>
<c29 m="5" s="5">6.881</c29>

<c29 m="6">3900</c29>
<c29 m="6" s="2">28.817</c29>
<c29 m="6" s="3">9.1</c29>
<c29 m="6" s="4">63.808</c29>
<c29 m="6" s="5">20.15</c29>

<c29 m="7">1290.211</c29>
<c29 m="7" s="2">9.533</c29>
<c29 m="7" s="3">3.011</c29>
<c29 m="7" s="4">30.641</c29>
<c29 m="7" s="5">9.678</c29>
</row>

Answer 1

试试这个

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Linq;
using System.Xml.Linq;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            string xml =
            "<Root>" +
               "<row>" +
               "<c24>20160201</c24>" +
               "<c24 m=\"2\">20160131</c24>" +
               "<c24 m=\"3\">20160101</c24>" +
               "<c24 m=\"4\">20151231</c24>" +
               "<c24 m=\"5\">20151201</c24>" +
               "<c24 m=\"6\">20151130</c24>" +
               "<c24 m=\"7\">20151102</c24>" +
               "</row>" +

               "<row>" +
               "<c28>IN</c28>" +
               "<c28 m=\"1\" s=\"2\">PE</c28>" +
               "<c28 m=\"1\" s=\"3\">PS</c28>" +
               "<c28 m=\"2\">PR</c28>" +
               "<c28 m=\"2\" s=\"2\">PE</c28>" +
               "<c28 m=\"2\" s=\"3\">PS</c28>" +

               "<c28 m=\"3\">IN</c28>" +
               "<c28 m=\"3\" s=\"2\">PE</c28>" +
               "<c28 m=\"3\" s=\"3\">PS</c28>" +
               "<c28 m=\"3\" s=\"4\">CE</c28>" +
               "<c28 m=\"3\" s=\"5\">CS</c28>" +

               "<c28 m=\"4\">PR</c28>" +
               "<c28 m=\"4\" s=\"2\">PE</c28>" +
               "<c28 m=\"4\" s=\"3\">PS</c28>" +
               "<c28 m=\"4\" s=\"4\">CE</c28>" +
               "<c28 m=\"4\" s=\"5\">CS</c28>" +

               "<c28 m=\"5\">IN</c28>" +
               "<c28 m=\"5\" s=\"2\">PE</c28>" +
               "<c28 m=\"5\" s=\"3\">PS</c28>" +
               "<c28 m=\"5\" s=\"4\">CE</c28>" +
               "<c28 m=\"5\" s=\"5\">CS</c28>" +

               "<c28 m=\"6\">PR</c28>" +
               "<c28 m=\"6\" s=\"2\">PE</c28>" +
               "<c28 m=\"6\" s=\"3\">PS</c28>" +
               "<c28 m=\"6\" s=\"4\">CE</c28>" +
               "<c28 m=\"6\" s=\"5\">CS</c28>" +

               "<c28 m=\"7\">PR</c28>" +
               "<c28 m=\"7\" s=\"2\">PE</c28>" +
               "<c28 m=\"7\" s=\"3\">PS</c28>" +
               "<c28 m=\"7\" s=\"4\">CE</c28>" +
               "<c28 m=\"7\" s=\"5\">CS</c28>" +
               "</row>" +

               "<row>" +
               "<c29>1334.564</c29>" +
               "<c29 m=\"1\" s=\"2\">9.509</c29>" +
               "<c29 m=\"1\" s=\"3\">3.003</c29>" +

               "<c29 m=\"2\">3900</c29>" +
               "<c29 m=\"2\" s=\"2\">28.817</c29>" +
               "<c29 m=\"2\" s=\"3\">9.1</c29>" +

               "<c29 m=\"3\">1366.468</c29>" +
               "<c29 m=\"3\" s=\"2\">10.097</c29>" +
               "<c29 m=\"3\" s=\"3\">3.189</c29>" +
               "<c29 m=\"3\" s=\"4\">10.818</c29>" +
               "<c29 m=\"3\" s=\"5\">3.416</c29>" +

               "<c29 m=\"4\">3900</c29>" +
               "<c29 m=\"4\" s=\"2\">28.817</c29>" +
               "<c29 m=\"4\" s=\"3\">9.1</c29>" +
               "<c29 m=\"4\" s=\"4\">31.904</c29>" +
               "<c29 m=\"4\" s=\"5\">10.075</c29>" +

               "<c29 m=\"5\">1353.571</c29>" +
               "<c29 m=\"5\" s=\"2\">10.001</c29>" +
               "<c29 m=\"5\" s=\"3\">3.159</c29>" +
               "<c29 m=\"5\" s=\"4\">21.789</c29>" +
               "<c29 m=\"5\" s=\"5\">6.881</c29>" +

               "<c29 m=\"6\">3900</c29>" +
               "<c29 m=\"6\" s=\"2\">28.817</c29>" +
               "<c29 m=\"6\" s=\"3\">9.1</c29>" +
               "<c29 m=\"6\" s=\"4\">63.808</c29>" +
               "<c29 m=\"6\" s=\"5\">20.15</c29>" +

               "<c29 m=\"7\">1290.211</c29>" +
               "<c29 m=\"7\" s=\"2\">9.533</c29>" +
               "<c29 m=\"7\" s=\"3\">3.011</c29>" +
               "<c29 m=\"7\" s=\"4\">30.641</c29>" +
               "<c29 m=\"7\" s=\"5\">9.678</c29>" +
               "</row>" +
               "</Root>";

            XDocument doc = XDocument.Parse(xml);

            var results = doc.Descendants().Where(m => (m.Name.LocalName != "row") && (m.Name.LocalName != "Root"))
                .GroupBy(x => x.Name.LocalName)
                .Select(y => new
                {
                    name = y.Where(z => z.Attribute("m") == null).Select(a => a.Value).FirstOrDefault(),
                    months = y.Where(z => z.Attribute("m") != null).GroupBy(z => z.Attribute("m")).Select(a => new
                    {
                        month = (int)a.Key,
                        section = a.Select(b => new
                        {
                            s = b.Attribute("s") == null ? null : (int?)b.Attribute("s"),
                            value = b.Value
                        }).FirstOrDefault()
                    }).ToList()
                }).ToList();

            DataTable dt = new DataTable();
            dt.Columns.Add("Name", typeof(string));
            dt.Columns.Add("Month", typeof(int));
            dt.Columns.Add("Section", typeof(int));
            dt.Columns.Add("Value", typeof(string));

            foreach (var name in results.AsEnumerable())
            {
                foreach (var month in name.months.AsEnumerable())
                {

                    if (month.section.s == null)
                    {
                        DataRow newRow = dt.Rows.Add(new object[] { name.name, month.month, 1, month.section.value });
                    }
                    else
                    {
                        DataRow newRow = dt.Rows.Add(new object[] { name.name, month.month, month.section.s, month.section.value });
                    }

                }
            }
            dataGridView1.DataSource = dt;
        }
    }
}

使用C＃根据两个属性将XML转换为DataTable

1 个答案: