using System.Collections.Generic; using System.Collections.ObjectModel; using System.Windows.Documents; using System.Windows.Input; using CommunityToolkit.Mvvm.Input; namespace MelskinTest.DataModel { public enum Gender { Male, Female, Other } public class DataGridItem { public int Id { get; set; } public string Name { get; set; } = ""; public int Age { get; set; } public bool Mark { get; set; } public Gender Gender { get; set; } } public class DataGridDemo { public DataGridDemo() { ShowSelectedItemsCommand = new RelayCommand(() => { if (SelectedDataGridItems != null && SelectedDataGridItems.Count > 0) { string names = string.Join(", ", SelectedDataGridItems.ConvertAll(item => item.Name)); System.Windows.MessageBox.Show($"选中项: {names}"); } else { System.Windows.MessageBox.Show("未选择项"); } }); } public ICommand ShowSelectedItemsCommand { get; } public List SelectedDataGridItems { get; set; } = new List(); public DataGridItem SelectedDataGridItem { get; set; } public ObservableCollection DataCollection { get; set; } = [ new DataGridItem { Id = 0, Name = "Symin", Age = 24, Mark = true, Gender = Gender.Other, }, new DataGridItem { Id = 1, Name = "Mike", Age = 23, Mark = false, Gender = Gender.Male, }, new DataGridItem { Id = 2, Name = "Alice", Age = 25, Mark = true, Gender = Gender.Female, }, new DataGridItem { Id = 3, Name = "Bob", Age = 18, Mark = true, Gender = Gender.Male, } ]; } }