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首先是绑定一个属性，属性名称无所谓。到时候看属性设置的啥，可能要改。

<DataGrid ItemsSource="{Binding Index_instance}"/>

然后创建INotifyPropertyChanged的类，并把相关固定的代码粘贴上去。

然后把这个目录类建好，要用

    public class Index1{public int Id { get; set; }public string Name { get; set; }public string Status { get; set; }}

用这个目录类创建属性

 private ObservableCollection<Index1> _index_instance;public ObservableCollection<Index1> Index_instance{get { return _index_instance; }set{_index_instance = value;OnPropertyChanged(nameof(Index_instance));}}

再创建构造函数，搞三个实例，并赋值。

        public Notify(){Index_instance = new ObservableCollection<Index1>{new Index1() {Id= 1, Name="Test 1", Status="Active" },new Index1() {Id= 2, Name="Test 2", Status="Inactive" },new Index1() {Id= 3, Name="Test 3", Status="Bad" },};}

最后一步，把窗口资源导向这个类的实例

DataContext = new Notify();

后台代码：

主窗口后台使用DataContext = new Notify();对应的类名称来引入自己定义的类里面的属性。

在VieModel中

class ViewModel:INotifyPropertyChanged
{private ObservableCollection<Index1> _dataGridSource;public ObservableCollection<Index1> DataGridSource{get { return _dataGridSource; }set { _dataGridSource = value;OnPropertyChanged(nameof(DataGridSource));}}public ViewModel(){_dataGridSource = new ObservableCollection<Index1>{new Index1(){Id=1,Name="Alic",Description="Active"}, new Index1(){Id=2,Name="Baliy",Description="Inactive"},new Index1(){Id=3,Name="Cecy",Description="Down"},};}//固定部分public event PropertyChangedEventHandler PropertyChanged;protected void OnPropertyChanged(string propertyName){PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));}}
public class Index1
{public int Id { get; set; }public string Name { get; set; }public string Description { get; set; }
}

XAML部分：

<Window x:Class="DataGrid练习2.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:local="clr-namespace:DataGrid练习2"mc:Ignorable="d"Title="MainWindow" Height="450" Width="800"><Grid><DataGrid Margin="30" ItemsSource="{Binding DataGridSource}"/></Grid>
</Window>