Question

我正在用C＃编写一个需要显示XML文档数据的WPF应用程序。这是XML文档：

<Schedules>
  <Schedule>
    <Course>
      <ID>CIT160</ID>
      <Section>01</Section>
      <Name>Introduction to Programming</Name>
      <Days>TuTh</Days>
      <STime>09:30</STime>
      <ETime>11:00</ETime>
      <Location>ATHS/E246</Location>
      <Teacher>KREPSHAW, R</Teacher>
    </Course>
    <Course>
      <ID>CIT180</ID>
      <Section>01</Section>
      <Name>Introduction to Database</Name>
      <Days>MW</Days>
      <STime>12:30</STime>
      <ETime>14:00</ETime>
      <Location>ATHS/E235</Location>
      <Teacher>SINGH, M</Teacher>
    </Course>
  </Schedule>
  <Schedule>
    <Course>
      <ID>CIT160</ID>
      <Section>01</Section>
      <Name>Introduction to Programming</Name>
      <Days>TuTh</Days>
      <STime>09:30</STime>
      <ETime>11:00</ETime>
      <Location>ATHS/E246</Location>
      <Teacher>KREPSHAW, R</Teacher>
    </Course>
    <Course>
      <ID>CIT180</ID>
      <Section>25</Section>
      <Name>Introduction to Database</Name>
      <Days>MW</Days>
      <STime>17:00</STime>
      <ETime>18:30</ETime>
      <Location>ATHS/E235</Location>
      <Teacher>SINGH, M</Teacher>
    </Course>
  </Schedule>
</Schedules>

我需要输出以下内容：

附表1

CIT160 01 Introdc ... TuTh 09:30 11:00 ATHS / E246 KREPSHAW，R

CIT180 01 Inroduc ... MW 12:30 14:00 ATHS / E235 SINGH，M

附表2

CIT160 01 Introdc ... TuTH 09:30 11:00 ATHS / E246 KREPSHAW，R

CIT180 25 Introdc ... MW 17:00 18:30 ATHS / E235 SINGH，M

我如何遍历XML文档？

这是我到目前为止所做的，但它不能正常工作。请帮忙。

private void LoopSchedule()
{
    XmlDocument xmlDoc = new XmlDocument();
    xmlDoc.Load("schedule.xml");

    XmlElement root = xmlDoc.DocumentElement;
    XmlElement subRoot = (XmlElement)root.FirstChild;
    XmlNodeList children = subRoot.ChildNodes;     

    for(int i = 0; i < children.Count; i++)
    {
        XmlElement courseRoot = (XmlElement)children[i].FirstChild;
        XmlNodeList child = courseRoot.ChildNodes;

        for(int j = 0; j < child.Count; j++)
        {
            StackPanel addPanel = new StackPanel();
            Label lblChild = new Label();
            lblChild.Foreground = new SolidColorBrush(Colors.White);
            lblChild.Content = child[j].Name;

            addPanel.Children.Add(lblChild);
            stkPan_display.Children.Add(addPanel);
        }
    }
}

Answer 1

这里有几点：

这里需要三个循环，而不是两个循环。一个用于时间表，一个用于每个时间表中的课程，一个用于每个课程中的数据元素。
如果您想在输出中使用，则需要为计划编号创建堆栈面板和标签。你在我看到的代码中没有这样的内容。
在为课程行创建堆栈面板时，您应该在课程子项的循环外创建它，然后在循环内添加每个标签。每个课程只需要一个StackPanel，而不是每个孩子一个。
您需要将StackPanel方向设置为Horizontal为行;默认为垂直。此外，如果您将背景设置为深色，则仅将画笔颜色设置为白色，否则您将无法看到它。默认背景为白色。

请尝试使用此代码：

XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load("schedule.xml");

XmlElement root = xmlDoc.DocumentElement;  // Schedules

int scheduleNumber = 0;
foreach (XmlElement schedule in root.ChildNodes)
{
    scheduleNumber++;
    StackPanel schedulePanel = new StackPanel { Orientation = Orientation.Horizontal };
    Label scheduleLabel = new Label { Content = "Schedule " + scheduleNumber.ToString() };
    schedulePanel.Children.Add(scheduleLabel);
    stkPan_display.Children.Add(schedulePanel);

    foreach (XmlElement course in schedule.ChildNodes)
    {
        StackPanel addPanel = new StackPanel { Orientation = Orientation.Horizontal };

        // all child elements of the Course element
        foreach (XmlElement child in course.ChildNodes)
        {
            Label lblChild = new Label();
            lblChild.Foreground = new SolidColorBrush(Colors.Black);
            lblChild.Content = child.InnerText;
            addPanel.Children.Add(lblChild);
        }

        stkPan_display.Children.Add(addPanel);
    }
}

Answer 2

使用xml linq

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;

namespace ConsoleApplication1
{
    class Program
    {
        const string FILENAME = @"c:\temp\test.xml";
        static void Main(string[] args)
        {
            XDocument doc = XDocument.Load(FILENAME);

            var schedules = doc.Descendants("Schedule").Select(x => new {
                courses = x.Elements("Course").Select(y => new {
                    id = (string)y.Element("ID"),
                    section = (string)y.Element("Section"),
                    name = (string)y.Element("Name"),
                    days = (string)y.Element("Days"),
                    stime = ((DateTime)y.Element("STime")).TimeOfDay,
                    etime = ((DateTime)y.Element("ETime")).TimeOfDay,
                    location = (string)y.Element("Location"),
                    teacher = (string)y.Element("Teacher")
                }).ToList()
            }).ToList();

        }
    }
}

循环遍历XmlDocument的XML子节点

2 个答案: