遇到的问题

1. 最开始找到的例子要写 Convert, 感觉和 Vue-Elment 的差别比较大后面找到类似与 Vue-Element UI 的写法，
2. 开始时数值不更新

关键代码

   <DataGridTemplateColumn Header="Digit" Width="100"><DataGridTemplateColumn.CellTemplate><DataTemplate><ComboBox ItemsSource="{Binding DataContext.DigitTypes, RelativeSource={RelativeSource AncestorType={x:Type Window}}}"SelectedValue="{Binding DigitType,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"SelectedValuePath="Id"DisplayMemberPath="Name"/></DataTemplate></DataGridTemplateColumn.CellTemplate></DataGridTemplateColumn>

完整代码

  public class EnumDesp{public int Id { get; set; }public string Name { get; set; }}public class MainWindowViewModel : BindableBase
{private string _title = "Prism Application";public string Title{get { return _title; }set { SetProperty(ref _title, value); }}public ObservableCollection<RealDigitViewModel> Digits { get; set; }=new ObservableCollection<RealDigitViewModel>();public ObservableCollection<EnumDesp> DigitTypes { get; set; }public MainWindowViewModel(){DigitTypes = DigitTypeConverter.DigitTypes;this.Digits.Add(new RealDigitViewModel(){Name = "Abc",DigitType = 1});this.Digits.Add(new RealDigitViewModel(){Name = "Def",DigitType = 2});}}

<Window x:Class="BlankApp1.Views.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:prism="http://prismlibrary.com/"prism:ViewModelLocator.AutoWireViewModel="True"Title="{Binding Title}" Height="350" Width="525" ><Grid><Grid.RowDefinitions><RowDefinition Height="Auto"></RowDefinition><RowDefinition></RowDefinition></Grid.RowDefinitions><Button Grid.Row="0" Command="{Binding MyCommand}" Content="Me" ></Button><DataGrid Grid.Row="1" ItemsSource="{Binding Digits}" AutoGenerateColumns="False"><DataGrid.Columns><DataGridTextColumn Header="Name" Binding="{Binding Name}"/><DataGridTemplateColumn Header="Digit" Width="100"><DataGridTemplateColumn.CellTemplate><DataTemplate><ComboBox ItemsSource="{Binding DataContext.DigitTypes, RelativeSource={RelativeSource AncestorType={x:Type Window}}}"SelectedValue="{Binding DigitType,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"SelectedValuePath="Id"DisplayMemberPath="Name"/></DataTemplate></DataGridTemplateColumn.CellTemplate></DataGridTemplateColumn></DataGrid.Columns></DataGrid></Grid>
</Window>