如何删除所有ListBox项目？

Question

我创建了两个RadioButton(重量和高度).我会在两个类别之间切换.但是它们共享相同的ListBox控制器(listBox1和listBox2).

有没有什么好方法可以更简单地清除所有ListBox项？我找不到ListBox的removeAll().我不喜欢我在这里发布的复杂的多行样式.

private void Weight_Click(object sender, RoutedEventArgs e)
    {
        // switch between the radioButton "Weith" and "Height"
        // Clear all the items first
        listBox1.Items.Remove("foot"); 
        listBox1.Items.Remove("inch");
        listBox1.Items.Remove("meter");
        listBox2.Items.Remove("foot");
        listBox2.Items.Remove("inch");
        listBox2.Items.Remove("meter");

        // Add source units items for listBox1
        listBox1.Items.Add("kilogram");
        listBox1.Items.Add("pound");

        // Add target units items for listBox2
        listBox2.Items.Add("kilogram");
        listBox2.Items.Add("pound");
    }

    private void Height_Click(object sender, RoutedEventArgs e)
    {
        // switch between the radioButton "Weith" and "Height"
        // Clear all the items first
        listBox1.Items.Remove("kilogram");
        listBox1.Items.Remove("pound");
        listBox2.Items.Remove("kilogram");
        listBox2.Items.Remove("pound");

        // Add source units items for listBox1
        listBox1.Items.Add("foot");
        listBox1.Items.Add("inch");
        listBox1.Items.Add("meter");

        // Add target units items for listBox2
        listBox2.Items.Add("foot");
        listBox2.Items.Add("inch");
        listBox2.Items.Add("meter");
    }

Answer 1

与Winform和Webform方式不一样？

listBox1.Items.Clear();

Answer 2

我认为将listBoxes实际绑定到数据源会更好,因为看起来你正在为每个列表框添加相同的元素.一个简单的例子是这样的:

    private List<String> _weight = new List<string>() { "kilogram", "pound" };
    private List<String> _height = new List<string>() { "foot", "inch", "meter" };

    public Window1()
    {            
        InitializeComponent();
    }        

    private void Weight_Click(object sender, RoutedEventArgs e)
    {
        listBox1.ItemsSource = _weight;
        listBox2.ItemsSource = _weight;
    }

    private void Height_Click(object sender, RoutedEventArgs e)
    {
        listBox1.ItemsSource = _height;
        listBox2.ItemsSource = _height;
    }