深入浅出WPF 第二部分(7)-优快云博客

本文链接：https://blog.youkuaiyun.com/xufei96/article/details/8332455

本文介绍如何使用LINQ查询语法筛选数据，并将其作为数据源绑定到WPF的ListView中展示。通过示例展示了从内存集合及XML文件中加载数据的过程，并配置了不同的绑定模式。

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6.3.10 使用LINQ检索结果作为Binding的源

    <Grid>
        <ListView x:Name="listViewStudents" Height="143" Margin="5">
            <ListView.View>
                <GridView>
                    <GridView.Columns>
                        <GridViewColumn Header="Id" Width="25" DisplayMemberBinding="{Binding Path=Id}"/>
                        <GridViewColumn Header="Name" Width="50" DisplayMemberBinding="{Binding Path=Name}"/>
                        <GridViewColumn Header="Age" Width="25" DisplayMemberBinding="{Binding Path=Age}"/>
                    </GridView.Columns>
                </GridView>
            </ListView.View>
        </ListView>
    </Grid>

namespace FirstWpfApplication.Objects
{
    class Student 
    {
        public string Name { get; set; }
        public string Id { get; set; }
        public int Age { get; set; }
    }
}

        List<Student> stuList = new List<Student>() 
        {
            new Student(){Id = "0", Name = "Anders", Age = 27},
            new Student(){Id = "1", Name = "Xuyang", Age = 34},
            new Student(){Id = "2", Name = "Yang", Age = 26}
        };

        public MainWindow()
        {
            InitializeComponent();

            this.listViewStudents.ItemsSource = from stu in stuList
                                                where stu.Age <= 30
                                                select stu;
        }

linq to xml:

<?xml version="1.0" encoding="utf-8"?>
<StudentList>
  <Students>
    <Student>
      <Id>2005050102</Id>
      <Name>Anders</Name>
      <Age>27</Age>
    </Student>
    <Student>
      <Id>2005050101</Id>
      <Name>Dong</Name>
      <Age>28</Age>
    </Student>
  </Students>
</StudentList>

            XDocument xDoc = XDocument.Load(@"C:\Users\v-xufeif\Desktop\Student.xml");
            this.listViewStudents.ItemsSource = from stu in xDoc.Descendants("Student")
                                                where int.Parse(stu.Element("Age").Value.Trim()) < 30
                                                select new Student()
                                                {
                                                    Id = stu.Element("Id").Value.Trim(),
                                                    Name = stu.Element("Name").Value.Trim(),
                                                    Age = int.Parse(stu.Element("Age").Value.Trim())
                                                };

    <Grid>
        <ListView x:Name="listViewStudents" Height="143" Margin="5">
            <ListView.View>
                <GridView>
                    <GridView.Columns>
                        <GridViewColumn Header="Id" Width="25" DisplayMemberBinding="{Binding Path=Id, Mode=OneWay}"/>
                        <GridViewColumn Header="Name" Width="50" DisplayMemberBinding="{Binding Path=Name, Mode=OneWay}"/>
                        <GridViewColumn Header="Age" Width="25" DisplayMemberBinding="{Binding Path=Age, Mode=OneTime}"/>
                    </GridView.Columns>
                </GridView>
            </ListView.View>
        </ListView>
    </Grid>