[英]use of combobox to appear another combobox C#
我想這樣做的原因是,一旦我選擇first_ComboBox
的第一項( Student Information
)想要出現second_ComboBox
。
我怎樣才能做到這一點
在cs代碼中
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>
在您的窗體主體上,可以將“第二個組合框”的可見性設置為false,然后在將第一個組合框選擇更改為“ true”時,將其設置為true。
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;
}
}
在初始化時隱藏第二個組合框可見性
public MainWindow()
{
InitializeComponent();
second_ComboBox.Visibility = Visibility.Collapsed;
}
private void first_ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
first_ComboBox.Visibility = System.Windows.Visibility.Visible;
}
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