无法将行添加到PowerShell中的WPF DataGrid

我正在使用PowerShell“WPF工具包”中的DataGrid。问题是我无法使用GUI添加新行

dialog.xaml

<Window
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:sys="clr-namespace:System;assembly=mscorlib"
  xmlns:dg="clr-namespace:Microsoft.Windows.Controls;assembly=WpfToolkit"
  >

  <Window.Resources>
    <x:Array x:Key="people" Type="sys:Object" />
  </Window.Resources>

  <StackPanel>
    <dg:DataGrid x:Name="_grid" ItemsSource="{DynamicResource people}" CanUserAddRows="True" AutoGenerateColumns="False">
      <dg:DataGrid.Columns>

        <dg:DataGridTextColumn Header="First" Binding="{Binding First}"></dg:DataGridTextColumn>
        <dg:DataGridTextColumn Header="Last" Binding="{Binding Last}"></dg:DataGridTextColumn>

      </dg:DataGrid.Columns>
    </dg:DataGrid>

    <Button>test</Button>
  </StackPanel>
</Window>

跑吧，蝙蝠

powershell -sta -file dialog.ps1

问题似乎出在$people集合中。我在C#中尝试了相同的代码，并且成功了，但是集合是这样定义的：

List<Person> people = new List<Person>();
people.Add(new Person { First = "John", Last = "Smith" });
this.Resources["people"] = people;

有什么想法吗

[System.Collections.ArrayList] $people = New-Object "System.Collections.ArrayList"

如果必须传递参数，则应将其设为强类型， 因此PowerShell不会将其包装为PsObject

最终解决方案：

# Declare Person class
add-type @"
    public class Person
    {
        public Person() {}

        public string First { get; set; }
        public string Last { get; set; }
    }
"@ -Language CsharpVersion3

# Make strongly-typed collection
[System.Collections.ArrayList] $people = New-Object "System.Collections.ArrayList"

# 
$john = new-object Person
$john.First = "John"
$john.Last = "Smith"

$people.add($john)

$form.Resources["people"] = $people

---

链路断开；这就是为什么我们要求人们发布答案，而不是答案的链接。

[System.Collections.ArrayList] $people = New-Object "System.Collections.ArrayList"

# Declare Person class
add-type @"
    public class Person
    {
        public Person() {}

        public string First { get; set; }
        public string Last { get; set; }
    }
"@ -Language CsharpVersion3

# Make strongly-typed collection
[System.Collections.ArrayList] $people = New-Object "System.Collections.ArrayList"

# 
$john = new-object Person
$john.First = "John"
$john.Last = "Smith"

$people.add($john)

$form.Resources["people"] = $people