回答編集履歴
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見直しキャンペーン中
test
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解決されたようですが、閲覧者向けにタイトルを回収しておきます。
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本来`ListView`と`DataGrid`は役割が違います。
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表示するだけなら`ListView`でいいですし、項目の編集をするなら`DataGrid`です。
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```x
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```xml
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<Window
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x:Class="Questions314032.MainWindow"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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Width="800"
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Height="450">
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<Grid>
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<ListView ItemsSource="{Binding People}">
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<ListView.View>
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<GridView>
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<GridViewColumn DisplayMemberBinding="{Binding Id}" Header="ID" />
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<GridViewColumn DisplayMemberBinding="{Binding Name}" Header="名前" />
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<GridViewColumn Header="削除">
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<GridViewColumn.CellTemplate>
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<DataTemplate>
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<Button Content="削除" Click="Button_Click" />
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</DataTemplate>
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</GridViewColumn.CellTemplate>
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</GridViewColumn>
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</GridView>
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</ListView.View>
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</ListView>
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</Grid>
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</Window>
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```
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```
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```cs
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using System.Collections.ObjectModel;
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using System.Windows;
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using System.Windows.Controls;
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namespace Questions314032
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{
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public class Person
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{
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public int Id { get; }
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public string Name { get; }
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public Person(int id, string name) => (Id, Name) = (id, name);
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}
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public partial class MainWindow : Window
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{
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public ObservableCollection<Person> People { get; }
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public MainWindow()
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{
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InitializeComponent();
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DataContext = this;
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People = new()
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{
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new(1, "田中"),
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new(2, "佐々木"),
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};
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}
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private void Button_Click(object sender, RoutedEventArgs e)
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{
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if (sender is Button button)
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{
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People.Remove((Person)button.DataContext);
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}
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}
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}
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}
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```
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---
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特に指定がないので.NET 5.0で書きました^^
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.NET Framework 4.8等では、new()でエラーが出るので型を書いてください。
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[Target-typed new expressions - C# 9.0 specification proposals | Microsoft Docs](https://docs.microsoft.com/ja-jp/dotnet/csharp/language-reference/proposals/csharp-9.0/target-typed-new)
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[ターゲットからの new 型推論 | ++C++; // 未確認飛行 C](https://ufcpp.net/study/csharp/oo_construct.html#target-typed-new)
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