使用组合框出现另一个组合框C#
本文关键字:组合 另一个 | 更新日期: 2023-09-27 18:25:55
我想这样做,一旦我选择了first_ComboBox
的第一个项目(Student Information
),就会出现second_ComboBox
。
我该如何实现
在cs代码中
private void first_ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
}
private void second_ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
}
在XAML 中
<StackPanel Margin="97,47,171,499" Orientation="Horizontal" Grid.Row="1">
<TextBlock HorizontalAlignment="Left" TextWrapping="Wrap" Text="Where You want to Control" VerticalAlignment="Top" Height="82" Width="463" FontSize="36"/>
<ComboBox x:Name="first_ComboBox" HorizontalAlignment="Left" VerticalAlignment="Top" Width="560" Height="42" SelectionChanged="first_ComboBox_SelectionChanged">
<x:String>Student Information</x:String>
<x:String>Staff Information</x:String>
<x:String>Academic Information</x:String>
</ComboBox>
</StackPanel>
<StackPanel Margin="97,172,171,374" Orientation="Horizontal" Grid.Row="1">
<TextBlock HorizontalAlignment="Left" TextWrapping="Wrap" Text="Select the Field" VerticalAlignment="Top" Height="82" Width="463" FontSize="36"/>
<ComboBox x:Name="second_ComboBox" HorizontalAlignment="Left" VerticalAlignment="Top" Width="560" Height="42" SelectionChanged="second_ComboBox_SelectionChanged">
<x:String>Student Name</x:String>
<x:String>Student Address</x:String>
</ComboBox>
</StackPanel>
在Form main上,您可以将第二个组合框的可见性设置为false,然后在第一个组合框选择更改时将其设置为true,类似于此
public MainWindow()
{
InitializeComponent();
second_ComboBox.Visibility = Visibility.Collapsed;
}
private void first_ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
var selecteditem = first_ComboBox.SelectedItem as string;
if (selecteditem != null)
{
second_ComboBox.Visibility = Visibility.Visible;
}
}
在初始化时使第二个组合框可视地隐藏
public MainWindow()
{
InitializeComponent();
second_ComboBox.Visibility = Visibility.Collapsed;
}
private void first_ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
first_ComboBox.Visibility = System.Windows.Visibility.Visible;
}