60 lines
1.6 KiB
C#
60 lines
1.6 KiB
C#
using System.Collections;
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using System.Windows;
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namespace WPF_12_ListView;
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/// <summary>
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/// Interaction logic for MainWindow.xaml
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/// </summary>
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public partial class MainWindow : Window
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{
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public MainWindow()
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{
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InitializeComponent();
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ListView.Items.Add("a1");
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ListView.Items.Add("a2");
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ListView.Items.Add("a3");
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ListView.Items.Add("a4");
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ListView.Items.Add("a5");
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ListView.Items.Add("a6");
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}
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private void AddButton_OnClick(object sender, RoutedEventArgs e)
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{
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if (string.IsNullOrEmpty(TextBox.Text)) return;
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ListView.Items.Add(TextBox.Text);
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TextBox.Clear();
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}
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private void DeletedButton_OnClick(object sender, RoutedEventArgs e)
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{
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// 通过索引删除
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// var index = ListView.SelectedIndex;
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// ListView.Items.RemoveAt(index);
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// 通过元素删除
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// var item = ListView.SelectedItem;
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// var result = MessageBox.Show($"Are you sure you want to delete this ${(string)item}?",
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// "Deleted?", MessageBoxButton.YesNo);
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// if (result != MessageBoxResult.Yes) return;
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// 批量删除
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var items = ListView.SelectedItems;
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var list = new ArrayList(items);
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if (list.Count <= 0) return;
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var result = MessageBox.Show($"Are you sure you want to delete this {list.Count}?",
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"Deleted?", MessageBoxButton.YesNo);
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if (result != MessageBoxResult.Yes) return;
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foreach (var item in list) ListView.Items.Remove(item);
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}
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private void ClearButton_OnClick(object sender, RoutedEventArgs e)
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{
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ListView.Items.Clear();
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}
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} |