我有一个带有数据集的组合框。
<ComboBox
Grid.Row="4"
Name="AddSubLocationCheckBox"
Height="40"
Background="White"
Visibility="Visible"
ItemsSource="{x:Bind ListLocations, Mode=OneWay}"
VerticalAlignment="Top"
HorizontalAlignment="Stretch"
PlaceholderText="Set as Sub-Location"
DisplayMemberPath="Name"
SelectedItem="{x:Bind SelectedLocation, Mode=TwoWay}"
Margin="0,30,10,0"/>
如果我选择任何变体,我如何取消选择此组合框中的选择?
答案 0 :(得分:0)
我创建了一个新按钮&#34;取消&#34;在组合框中取消选择。这是一个简单的方法。我保留了组合框的代码属性和功能,按钮:
<ComboBox
Grid.Row="4"
Name="AddSubLocationCheckBox"
Height="40"
Width="300"
Background="White"
Visibility="Visible"
ItemsSource="{x:Bind ListLocations, Mode=OneWay}"
VerticalAlignment="Top"
HorizontalAlignment="Left"
PlaceholderText="Set as Sub-Location"
DisplayMemberPath="Name"
SelectedItem="{x:Bind SelectedLocation, Mode=TwoWay}"
Margin="0,30,10,0"/>
<Button
Grid.Row="4"
Name="CancelSubLocation"
HorizontalAlignment="Right"
VerticalAlignment="Top"
Width="40"
Height="40"
Background="{StaticResource WhiteSolidColorBrush}"
Tapped="CancelSubLocation_Tapped"
Visibility="Visible"
IsEnabled="False"
Margin="0,30,10,0">
<FontIcon Glyph="" Foreground="Black"/>
</Button>
public ComboBoxLocationItem SelectedLocation
{
get { return (ComboBoxLocationItem)GetValue(SelectedLocationProperty); }
set { SetValue(SelectedLocationProperty, value); }
}
public static readonly DependencyProperty SelectedLocationProperty =
DependencyProperty.Register(nameof(SelectedLocation), typeof(ComboBoxLocationItem), typeof(AddLocationControl), new PropertyMetadata(null,
(o, args) => ((AddLocationControl)o).CheckSubLocation()));
public void CheckSubLocation()
{
if (SelectedLocation != null)
{
CancelSubLocation.IsEnabled = true;
}
else
{
CancelSubLocation.IsEnabled = false;
}
}
private void CancelSubLocation_Tapped(object sender, TappedRoutedEventArgs e)
{
CancelSubLocation.IsEnabled = false;
SelectedLocation = null;
}