Windows Phone读取本地数据

最新推荐文章于 2025-09-17 12:36:25 发布

转载最新推荐文章于 2025-09-17 12:36:25 发布 · 551 阅读

文章标签：

#windows phone #stream #string #encoding #class #null

本文介绍两种在Windows Phone应用中从XML文件加载学生信息的方法。一种是使用System.Xml.Linq命名空间，另一种则是通过Application.GetResourceStream方法。两种方式均实现了将XML文件中的学生数据解析并展示。

Read XML Files

Assuming that we have following xml file

<?xml version="1.0" encoding="utf-8" ?>
<Students>
  <Student>
    <Name>Alexis</Name>
    <Age>12</Age>
    <No>007</No>
  </Student>
  <Student>
    <Name>Tomcat</Name>
    <Age>20</Age>
    <No>62</No>
  </Student>
  <Student>
    <Name>Jacky</Name>
    <Age>32</Age>
    <No>001</No>
  </Student>
  <Student>
    <Name>Selina</Name>
    <Age>24</Age>
    <No>033</No>
  </Student>
</Students>

The root Element is Students which has four child element Student. How can we load them in windows phone .We can do that in many ways. Before we do that we create Student class first.

public class Student
{
    public string Name { get; set; }

    public int Age { get; set; }

    public string No { get; set; }
}

Way 1. Add System.Xml.Linq reference

then we can use following code to load students in one collection

XElement root = XElement.Load("Students.xml");
if (root != null)
{
     var items = from student in root.Descendants("Student")
                 select new Student
                 {
                    Age = Convert.ToInt32(student.Element("Age").Value),
                    Name = student.Element("Name").Value,
                    No = student.Element("No").Value,
                  };
     listBox1.ItemsSource = items;
}

Remeber to set Students.xml build action to Content.

Way 2. use Application.GetResourceStream

var streamInfo = Application.GetResourceStream(new Uri("Students.xml", UriKind.Relative));
using (var stream=streamInfo.Stream)
{
    XElement root = XElement.Load(stream);
    if (root != null)
    {
       var items = from student in root.Descendants("Student")
                   select new Student
                   {
                      Age = Convert.ToInt32(student.Element("Age").Value),
                      Name = student.Element("Name").Value,
                      No = student.Element("No").Value,
                    };
        listBox1.ItemsSource = items;
     }

｝
出处：http://www.cnblogs.com/alexis/