c# WPF - Listview绑定不工作

我一直在尝试在WPF中创建一个窗口，并将列表视图绑定到对象列表，但我无法将列表中的对象显示在列表视图中。

下面是窗口的XAML:

<Window x:Class="WpfApplication.window_ManageInstruments"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="window_ManageInstruments" Height="400" Width="600" WindowStartupLocation="CenterOwner">
<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="100" />
        <RowDefinition />
    </Grid.RowDefinitions>
    <ListView Grid.Row="1" Margin="5" Name="listInstruments" ItemsSource="{Binding InstrumentList}">
        <ListView.View>
            <GridView>
                <GridViewColumn Width="120" Header="Symbol" DisplayMemberBinding="{Binding Field1}"/>
                <GridViewColumn Width="200" Header="Description" DisplayMemberBinding="{Binding Field2}"/>
                <GridViewColumn Width="120" Header="Last Stats" DisplayMemberBinding="{Binding Field3}"/>
                <GridViewColumn Width="100" Header="Margin" DisplayMemberBinding="{Binding Field4}"/>
            </GridView>
        </ListView.View>
    </ListView>
    <Label HorizontalAlignment="Left" Margin="10,10,0,0" Name="label1" Width="120" Height="25" VerticalAlignment="Top">Symbol</Label>
    <Label HorizontalAlignment="Left" Margin="10,40,0,0" Name="label2" Width="120" Height="25">Description</Label>
    <TextBox Height="25" Margin="150,10,0,0" Name="txtSymbol" VerticalAlignment="Top" HorizontalAlignment="Left" Width="120" />
    <TextBox Margin="150,40,0,0" Name="txtDescription" HorizontalAlignment="Left" Width="120" Height="25" />
    <Button Height="23" HorizontalAlignment="Right" Margin="0,12,133,0" Name="btn_AddInstrument" VerticalAlignment="Top" Width="75">Add</Button>
</Grid>

，下面是代码:

<>之前使用系统;使用System.Collections.Generic;使用来;使用text;使用System.Windows;使用System.Windows.Controls;使用System.Windows.Data;使用System.Windows.Documents;使用System.Windows.Input;使用System.Windows.Media;使用System.Windows.Media.Imaging;使用System.Windows.Shapes;使用System.Xml;使用WpfApplication.classes;使用System.Collections.ObjectModel;命名空间WpfApplication {//////window_ManageInstruments.xaml的交互逻辑///公共部分类window_ManageInstruments:窗口{public ObservableCollection instrumentation list = new ObservableCollection();公共window_ManageInstruments() {这一点。DataContext = this;InstrumentList。添加(新的TestClass {Field1 = "A"， Field2 = "B"， Field3 = "C"， Field4 = "D"});InstrumentList。添加(新的TestClass {Field1 = "E"， Field2 = "F"， Field3 = "G"， Field4 = "H"});InitializeComponent ();}}公共类TestClass {公共字符串Field1{获取;设置;}公共字符串Field2 {get;设置;}公共字符串Field3{获取;设置;}公共字符串Field4{获取;设置;}}}之前

我不知道我在这里是否遗漏了任何关键的配置，所以任何帮助都会非常感激。

提前感谢。

private ObservableCollection _instrumentList = new ObservableCollection();
public ObservableCollection InstrumentList{
  get{ return _instrumentList;}
}

public window_ManageInstruments() 
{
    InitializeComponent();
    InstrumentList.Add(new TestClass { Field1 = "A", Field2 = "B", Field3 = "C", Field4 = "D" });
    InstrumentList.Add(new TestClass { Field1 = "E", Field2 = "F", Field3 = "G", Field4 = "H" });
    this.DataContext = this;
}

public ObservableCollection<TestClass> InstrumentList { get; set; }

InstrumentList = new ObservableCollection<TestClass>();