CheckComboBox：如何防止从组合框点击选择后，关闭？ [英] CheckComboBox : How to prevent a combobox from closing after a selection is clicked?
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问题描述
我有一个组合框，它的填充一堆复选框。我希望用户能够点击多次组合框关闭（或由用户自行闭合）之前。这些问题现在是每次点击一个复选框时，组合框关闭，迫使谁愿意选择多个选项来重新打开它几十倍的用户。
I've got a combobox and it's populated with a bunch of checkboxes. I wish the user to be able to click multiple times before the combobox closes (or is closed by the user themselves). The problems right now is that each time a checkbox is clicked, the combobox closes, forcing the user who wants to select multiple options to re-open it several times.
我'已经就同一主题中发现的其他问题，但这些申请的Silverlight，Qt的比较等标签。
I've found other questions on the same subject but those apply to Silverlight, Qt etc. comparing the tags.
我试过设置的 StayOpenOnEdit 的但没有做的伎俩。据我所见，没有财产解决我的问题。这就产生了怀疑，我可能会一起barning了错误的组件。
I've tried setting StayOpenOnEdit but that didn't do the trick. As far I could see, there's no property addressing my issue. That creates a suspicion that I might be barning up the wrong component all together.
- 如何防止组合框点击后自动关闭在这一个复选框？
- 是否有这样的任务，如果有更合适的部件，什么是它的名字？
请注意，即使答案＃2是是，我还是好奇的＃1纯学术性的原因。
Please note that even if the answer to #2 is "yes", I'm still curious of #1 for purely academic reasons.
我已经打了切换按钮和列表框，有人在后建议。然而，唯一导致所有它背后的一些东西灰色的复选框的处处尽显列表（我假设是toggler）。也许我做的加价一样聪明的东西。
I've played with toggle button and list box, as someone suggested in a post. However, the that led only to an always fully shown list of all the checkboxes with some greyish thing behind it (which I'm assuming is the toggler). Perhaps I did something less clever in the mark-up.
<ToggleButton HorizontalAlignment="Left"
Margin="550,62,0,0"
VerticalAlignment="Top"
Width="100">
<ListBox x:Name="listBox1"
HorizontalAlignment="Left"
Height="100"
VerticalAlignment="Top" Width="100">
<CheckBox x:Name="checkBox3" Content="CheckBox"/>
<CheckBox x:Name="checkBox4" Content="CheckBox"/>
</ListBox>
</ToggleButton>
关键是要实现的这样的事情，但它需要一个标准的WPF控件（所有选定项的级联线是好的，但不是必须的）。另外，我读过，没有完全开发出来的绑定和处理投诉，我觉得有点可疑。
The point is to achieve something like this but it needs to be a standard WPF control (the concatenated line of all selected items is nice but not a must). Also, I've read the complaints that the binding and handling is not fully developed yet and I feel a bit suspicious.
推荐答案
使用 Exapander控制就可以实现multple选择的项目没有单一的选择后，关闭弹出窗口。
Using Exapander Control you can achieve multple item selection without closing popup after single selection.
有关了解请单独运行这段代码。
For understanding please run this code separately.
XAML
<Window.Resources>
<ControlTemplate x:Key="ComboboxToggleButton" TargetType="{x:Type ToggleButton}">
<Grid Background="{Binding Background,RelativeSource={RelativeSource AncestorType={x:Type ComboBox}}}">
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="35" />
</Grid.ColumnDefinitions>
<Border x:Name="Border" Grid.ColumnSpan="2" Background="Transparent" BorderBrush="Black" BorderThickness="{Binding BorderThickness,RelativeSource={RelativeSource TemplatedParent}}"/>
<Path x:Name="Arrow" Grid.Column="1" Opacity="1" Stroke="Black" StrokeThickness="1.5" HorizontalAlignment="Center" VerticalAlignment="Center" Data="M 0 0 L 6 6 L 12 0" />
<Path x:Name="Arrow_checked" Opacity="0" Grid.Column="1" Fill="Black" Stroke="Black" StrokeThickness="1" HorizontalAlignment="Center" VerticalAlignment="Center" Data="M 0 0 L 6 6 L 12 0 Z" />
<ContentPresenter TextElement.FontFamily="Segoe Ui Dark" TextElement.FontSize="18" TextElement.Foreground="Black" VerticalAlignment="Center" Grid.Column="0" Margin="10,0,0,0" HorizontalAlignment="Left" RecognizesAccessKey="True" SnapsToDevicePixels="True" />
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsMouseOver" Value="true">
<Setter TargetName="Border" Property="Background" Value="Gray" />
<Setter TargetName="Border" Property="BorderThickness" Value="1.2" />
</Trigger>
<Trigger Property="IsChecked" Value="False">
<Setter Property="Opacity" Value="1" TargetName="Arrow"/>
<Setter Property="Opacity" Value="0" TargetName="Arrow_checked"/>
</Trigger>
<Trigger Property="ToggleButton.IsChecked" Value="true">
<Setter Property="Opacity" Value="0" TargetName="Arrow"/>
<Setter Property="Opacity" Value="1" TargetName="Arrow_checked"/>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter TargetName="Border" Property="Background" Value="Gray" />
<Setter TargetName="Border" Property="BorderBrush" Value="White" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<Style TargetType="{x:Type Expander}">
<Setter Property="FontFamily" Value="Segoe Ui Dark"></Setter>
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="VerticalContentAlignment" Value="Stretch"/>
<Setter Property="MaxHeight" Value="200"></Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Expander}">
<DockPanel>
<ToggleButton x:Name="HeaderSite" Height="35" Background="{TemplateBinding Background}" ContentTemplate="{TemplateBinding HeaderTemplate}" ContentTemplateSelector="{TemplateBinding HeaderTemplateSelector}" Content="{TemplateBinding Header}" DockPanel.Dock="Top" Foreground="Black" FontStyle="{TemplateBinding FontStyle}" FontFamily="Segoe UI Dark"
IsChecked="{Binding IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Template="{StaticResource ComboboxToggleButton}" />
<Border BorderThickness="0,4.5,0,0" BorderBrush="Transparent">
<Border x:Name="bod" BorderBrush="Transparent" SnapsToDevicePixels="True" BorderThickness="1">
<ContentPresenter x:Name="ExpandSite" Focusable="false" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Visibility="Collapsed" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
</Border>
</Border>
</DockPanel>
<ControlTemplate.Triggers>
<Trigger Property="IsExpanded" Value="true">
<Setter Property="Visibility" TargetName="ExpandSite" Value="Visible"/>
<Setter Property="BorderBrush" TargetName="bod" Value="Black"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="Gray"></Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="itemstyle" TargetType="{x:Type ListBoxItem}">
<Setter Property="SnapsToDevicePixels" Value="true" />
<Setter Property="OverridesDefaultStyle" Value="true" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Grid x:Name="Border" Height="40" SnapsToDevicePixels="true">
<Grid.Background>
<SolidColorBrush Color="Transparent" />
</Grid.Background>
<ContentPresenter Name="cmb_name" TextElement.FontFamily="Segoe Ui Dark" TextElement.FontSize="18" TextElement.Foreground="Black" Margin="10,0,0,0" VerticalAlignment="Center"></ContentPresenter>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Border" Property="Background" Value="Gray"></Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="FocusVisualStyle">
<Setter.Value>
<Style TargetType="Control">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Border BorderBrush="{DynamicResource customBlueBrush}" BorderThickness="1" Margin="1,2,2,2" >
<Rectangle Fill="{DynamicResource customBlueBrush}" Opacity="0.1"></Rectangle>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="CheckBox" >
<Setter Property="SnapsToDevicePixels" Value="True"></Setter>
<Setter Property="OverridesDefaultStyle" Value="True"></Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="CheckBox">
<Grid x:Name="ab" Background="Transparent">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="30"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Rectangle VerticalAlignment="Center" Height="20" Width="20" Fill="White" HorizontalAlignment="Left"></Rectangle>
<Grid x:Name="checkGrid" VerticalAlignment="Center" Height="20" Width="20" Background="Black" HorizontalAlignment="Left">
<Viewbox Height="13" Width="13">
<Path x:Name="Check" SnapsToDevicePixels="True" UseLayoutRounding="True" Width="18.7969" Height="16.3094" Canvas.Left="0" Canvas.Top="1.52588e-005" Stretch="Fill" Fill="White" Data="F1 M 0.731262,8.75935L 0.106262,8.08437C 0.0354614,7.9948 0,7.8979 0,7.79375C 0,7.66875 0.0479736,7.5573 0.143799,7.45937L 1.94067,5.77187C 2.02606,5.69893 2.12708,5.66249 2.24377,5.66249C 2.30212,5.66249 2.36096,5.67397 2.42035,5.69685C 2.47974,5.71977 2.52814,5.75417 2.56567,5.79997L 7.5188,11.1406L 16.0438,0.165604C 16.1417,0.055191 16.2584,1.52588e-005 16.3938,1.52588e-005C 16.4979,1.52588e-005 16.5896,0.0322723 16.6688,0.0968475L 18.6313,1.60939C 18.6709,1.64272 18.7084,1.69011 18.7438,1.75154C 18.7792,1.813 18.7969,1.8698 18.7969,1.92189C 18.7969,2.03435 18.7646,2.1385 18.7,2.23439L 7.74377,16.3094L 0.731262,8.75935 Z " />
</Viewbox>
</Grid>
<Grid Background="Transparent" Grid.Column="1" IsHitTestVisible="True" HorizontalAlignment="Stretch">
<TextBlock VerticalAlignment="Center" FontSize="18" FontFamily="Segoe Ui Dark" Foreground="Black" TextTrimming="CharacterEllipsis">
<ContentPresenter></ContentPresenter>
</TextBlock>
</Grid>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Opacity" Value="1" TargetName="Check"></Setter>
</Trigger>
<Trigger Property="IsChecked" Value="False">
<Setter Property="Opacity" Value="0" TargetName="Check"></Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="FocusVisualStyle">
<Setter.Value>
<Style TargetType="Control">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Border BorderBrush="{DynamicResource customBlueBrush}" SnapsToDevicePixels="True" BorderThickness="1" Margin="-5,1,3,1" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<Grid x:Name="gd" >
<Expander Width="500">
<Expander.Header>
<ListBox Background="Transparent" IsHitTestVisible="False" BorderBrush="Transparent" ScrollViewer.HorizontalScrollBarVisibility="Hidden" ScrollViewer.VerticalScrollBarVisibility="Disabled" BorderThickness="0" ItemsSource="{Binding ElementName=lst,Path=SelectedItems}">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Orientation="Horizontal"></WrapPanel>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding ContentData}"/>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Expander.Header>
<Expander.Content>
<ListBox Background="Transparent" ItemContainerStyle="{StaticResource itemstyle}" HorizontalContentAlignment="Stretch" x:Name="lst" SelectionMode="Multiple">
<ListBox.ItemTemplate>
<DataTemplate>
<CheckBox x:Name="checkBox" IsChecked="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListBoxItem}}, Path=IsSelected}" Content="{Binding ContentData}"></CheckBox>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Expander.Content>
</Expander>
</Grid>
C＃代码
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
ObservableCollection<Customer> custdata = new ObservableCollection<Customer>();
custdata.Add(new Customer() { ContentData = "content1" });
custdata.Add(new Customer() { ContentData = "content2" });
custdata.Add(new Customer() { ContentData = "content3" });
custdata.Add(new Customer() { ContentData = "content4" });
custdata.Add(new Customer() { ContentData = "content5" });
custdata.Add(new Customer() { ContentData = "content6" });
lst.ItemsSource = custdata;
}
}
public class Customer
{
public string ContentData { get; set; }
}
结果
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