如何设置combox项的可见性？ [英] How to set combox item visibility?

问题描述

我有两个具有相同组合框项目（Apple& Orange）的WPF组合框（comboboxA，comboboxB）。让我们说在组合框A中选择Apple，然后Apple需要隐藏在comboxB中。如果我回到comboxA并选择橙色，苹果将可见，橙色需要隐藏。我如何实现使用C＃？

代码片段xaml：

 < ComboBox Name =comboboxA> 
< ComboBoxItem Content =AppleName =AppleA>< / ComboBoxItem> 
< ComboBoxItem Content =OrangeName =OrangeA>< / ComboBoxItem> 
< / ComboBox> 
 
< ComboBox Name =comboboxB> 
< ComboBoxItem Content =AppleName =AppleB>< / ComboBoxItem> 
< ComboBoxItem Content =OrangeName =OrangeB>< / ComboBoxItem> 
< / ComboBox> 
  

解决方案

您可以使用sa_ddam213提到的方法，

  private void comboboxA_SelectionChanged（object sender，SelectionChangedEventArgs e）
 {
 for（int i = 0; i <= comboboxB.Items.Count -1; i ++）
 {
 if（（ComboBoxItem）（comboboxB.Items [i]）） .Content.ToString（）==（（ComboBoxItem）comboboxA.SelectedItem）.Content.ToString（））
 {
（ComboBoxItem）（comboboxB.Items [i]））。 Windows.Visibility.Collapsed; 
} 
 else 
（（ComboBoxItem）（comboboxB.Items [i]））。Visibility = System.Windows.Visibility.Visible; 
} 
} 
  

i have 2 WPF comboboxes(comboboxA, comboboxB)with identical combobox item(Apple & Orange). Let say i select "Apple" in the comboboxA, then the "Apple" need to be hidden in the comboxB. If i go back to comboxA and select "Orange", "Apple" will be visible and "Orange" need to be hidden. How can i achieve that using C#?

code snippet for xaml:

    <ComboBox Name="comboboxA" >
        <ComboBoxItem Content="Apple" Name="AppleA"></ComboBoxItem>
        <ComboBoxItem Content="Orange" Name="OrangeA"></ComboBoxItem>
    </ComboBox>

    <ComboBox Name="comboboxB" >
        <ComboBoxItem Content="Apple" Name="AppleB"></ComboBoxItem>
        <ComboBoxItem Content="Orange" Name="OrangeB"></ComboBoxItem>
    </ComboBox>

解决方案

You can use the Method that sa_ddam213 mentioned, or you can just brute force it in the SelectionChanged Event like so.

private void comboboxA_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    for (int i = 0; i <= comboboxB.Items.Count -1; i++)
    {
        if (((ComboBoxItem)(comboboxB.Items[i])).Content.ToString() == ((ComboBoxItem)comboboxA.SelectedItem).Content.ToString())
        {
            ((ComboBoxItem)(comboboxB.Items[i])).Visibility = System.Windows.Visibility.Collapsed;
        }
        else
            ((ComboBoxItem)(comboboxB.Items[i])).Visibility = System.Windows.Visibility.Visible;
    }
}

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