标准（桌面）窗口组合框具有三种样式；简单、下拉和下拉列表。Dropdown 像编辑控件和组合框一样工作，而 Drop List 不允许编辑。
我是否遗漏了什么，或者 Windows 8 商店应用程序中的 XAML ComboBox 控件仅支持下拉列表样式？
当我遇到这个问题时，我正在实施一些事情，而且我越看，似乎越不支持它。
我真的需要用编辑控件和列表框替换屏幕中的组合框吗？
呸。
问问题
5131 次
8 回答
5
感谢 edward.ho.tpe 的回答，我通过使用TextBox里面的ComboBoxItem. 如果您想多次使用它，最好创建一个 UserControl。
然而，这就是我的做法：
样式：
<SolidColorBrush x:Key="TransparentBrush" Color="Transparent"/>
<Style x:Key="ComboBoxItemTextBox" TargetType="TextBox">
<Setter Property="MinWidth" Value="{ThemeResource TextControlThemeMinWidth}"/>
<Setter Property="MinHeight" Value="{ThemeResource TextControlThemeMinHeight}"/>
<Setter Property="Foreground" Value="{ThemeResource TextBoxForegroundThemeBrush}"/>
<Setter Property="Background" Value="{StaticResource TransparentBrush}"/>
<Setter Property="BorderBrush" Value="{StaticResource TransparentBrush}"/>
<Setter Property="SelectionHighlightColor" Value="{ThemeResource TextSelectionHighlightColorThemeBrush}"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="FontFamily" Value="{ThemeResource ContentControlThemeFontFamily}"/>
<Setter Property="FontSize" Value="{ThemeResource ControlContentThemeFontSize}"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Hidden"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Hidden"/>
<Setter Property="ScrollViewer.IsDeferredScrollingEnabled" Value="False"/>
<Setter Property="Padding" Value="{ThemeResource TextControlThemePadding}"/>
<Setter Property="Margin" Value="-10,0,0,0"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TextBox">
<Grid>
<Grid.Resources>
<Style x:Name="DeleteButtonStyle" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Grid>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="PointerOver">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="BackgroundElement">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextBoxButtonPointerOverBackgroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="BorderBrush" Storyboard.TargetName="BorderElement">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextBoxButtonPointerOverBorderThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="GlyphElement">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextBoxButtonPointerOverForegroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Pressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="BackgroundElement">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextBoxButtonPressedBackgroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="BorderBrush" Storyboard.TargetName="BorderElement">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextBoxButtonPressedBorderThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="GlyphElement">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextBoxButtonPressedForegroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="0" To="0" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="BackgroundElement"/>
<DoubleAnimation Duration="0" To="0" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="BorderElement"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border x:Name="BorderElement" BorderBrush="{ThemeResource TextBoxButtonBorderThemeBrush}" BorderThickness="{TemplateBinding BorderThickness}"/>
<Border x:Name="BackgroundElement" Background="{ThemeResource TextBoxButtonBackgroundThemeBrush}" Margin="{TemplateBinding BorderThickness}">
<TextBlock x:Name="GlyphElement" AutomationProperties.AccessibilityView="Raw" Foreground="{ThemeResource TextBoxButtonForegroundThemeBrush}" FontStyle="Normal" FontFamily="{ThemeResource SymbolThemeFontFamily}" HorizontalAlignment="Center" Text="" VerticalAlignment="Center"/>
</Border>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Grid.Resources>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="BackgroundElement">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextBoxDisabledBackgroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="BorderBrush" Storyboard.TargetName="BorderElement">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextBoxDisabledBorderThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="ContentElement">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextBoxDisabledForegroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Foreground" Storyboard.TargetName="PlaceholderTextContentPresenter">
<DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource TextBoxDisabledForegroundThemeBrush}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Normal">
<Storyboard>
<DoubleAnimation Duration="0" To="{ThemeResource TextControlBackgroundThemeOpacity}" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="BackgroundElement"/>
<DoubleAnimation Duration="0" To="{ThemeResource TextControlBorderThemeOpacity}" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="BorderElement"/>
</Storyboard>
</VisualState>
<VisualState x:Name="PointerOver">
<Storyboard>
<DoubleAnimation Duration="0" To="{ThemeResource TextControlPointerOverBackgroundThemeOpacity}" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="BackgroundElement"/>
<DoubleAnimation Duration="0" To="{ThemeResource TextControlPointerOverBorderThemeOpacity}" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="BorderElement"/>
</Storyboard>
</VisualState>
<VisualState x:Name="Focused"/>
</VisualStateGroup>
<VisualStateGroup x:Name="ButtonStates">
<VisualState x:Name="ButtonVisible"/>
<VisualState x:Name="ButtonCollapsed"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border x:Name="BackgroundElement" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" Margin="{TemplateBinding BorderThickness}" Grid.Row="1" Grid.RowSpan="1"/>
<Border x:Name="BorderElement" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Grid.ColumnSpan="2" Grid.Row="1" Grid.RowSpan="1"/>
<ContentPresenter x:Name="HeaderContentPresenter" Grid.ColumnSpan="2" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" Foreground="{ThemeResource TextBoxForegroundHeaderThemeBrush}" FontWeight="Semilight" Margin="0,4,0,4" Grid.Row="0"/>
<ScrollViewer x:Name="ContentElement" AutomationProperties.AccessibilityView="Raw" HorizontalScrollMode="{TemplateBinding ScrollViewer.HorizontalScrollMode}" HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}" IsTabStop="False" IsHorizontalRailEnabled="{TemplateBinding ScrollViewer.IsHorizontalRailEnabled}" IsVerticalRailEnabled="{TemplateBinding ScrollViewer.IsVerticalRailEnabled}" IsDeferredScrollingEnabled="{TemplateBinding ScrollViewer.IsDeferredScrollingEnabled}" Margin="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}" Grid.Row="1" VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}" VerticalScrollMode="{TemplateBinding ScrollViewer.VerticalScrollMode}" ZoomMode="Disabled"/>
<ContentControl x:Name="PlaceholderTextContentPresenter" Grid.ColumnSpan="2" Content="{TemplateBinding PlaceholderText}" Foreground="{ThemeResource TextBoxPlaceholderTextThemeBrush}" IsHitTestVisible="False" IsTabStop="False" Margin="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}" Grid.Row="1"/>
<Button x:Name="DeleteButton" BorderThickness="{TemplateBinding BorderThickness}" Grid.Column="1" FontSize="{TemplateBinding FontSize}" IsTabStop="False" Grid.Row="1" Style="{StaticResource DeleteButtonStyle}" Visibility="Collapsed" VerticalAlignment="Stretch"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
组合框：
<ComboBox SelectionChanged="ComboBox_SelectionChanged">
<ComboBoxItem IsSelected="True">
<TextBox x:Name="tbComboBox" Style="{StaticResource ComboBoxItemTextBox}" KeyDown="tbComboBox_KeyDown"/>
</ComboBoxItem>
<ComboBoxItem>Item 1</ComboBoxItem>
<ComboBoxItem>Item 2</ComboBoxItem>
<ComboBoxItem>Item 3</ComboBoxItem>
<ComboBoxItem>Item 4</ComboBoxItem>
</ComboBox>
事件处理程序：
private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (e.AddedItems.Count == 1 && e.AddedItems[0] != (sender as ComboBox).Items[0])
{
(sender as ComboBox).SelectedIndex = 0;
tbComboBox.Text = (e.AddedItems[0] as ComboBoxItem).Content as String;
}
}
private void tbComboBox_KeyDown(object sender, KeyRoutedEventArgs e)
{
if (e.Key == Windows.System.VirtualKey.Space)
{
if (tbComboBox.SelectionLength > 0)
{
tbComboBox.Text = tbComboBox.Text.Remove(tbComboBox.SelectionStart, tbComboBox.SelectionLength);
tbComboBox.SelectionLength = 0;
}
int pos = tbComboBox.SelectionStart;
tbComboBox.Text = tbComboBox.Text.Insert(pos, " ");
tbComboBox.SelectionStart = pos + 1;
e.Handled = true;
}
}
所以基本上这是什么：
正如 edward.ho.tpe 建议 aTextBox作为 a 的第一项的内容ComboBox。有TextBox一个自定义样式，可以删除背景、边框，将其向左移动一点（可选 - 但我喜欢它，因为它提供了更多的书写空间），并更改了删除按钮以保持折叠状态。事件SelectionChanged处理程序确保TextBox保持SelectedItem并且仅Text根据所选项目的内容更改 ，并且KeyDown事件处理程序处理空格 keydown ，否则会触发ComboBox.
于 2014-08-09T15:05:30.107 回答
4
WinRT 的 Syncfusion Controls也包含一个 ComboBox。但它不是免费的。
于 2014-01-02T10:38:12.303 回答
3
由于 WinRT 中的组合框项目可以是任何东西，您可以：
<ComboBoxItem>
<TextBox Text="something"/>
</ComboBoxItem>
当用户单击该项目时，他/她可以编辑其内容。
是否让编辑结果更改该项目的编辑框或只是将新的组合框项目添加到该组合框取决于您。在 LostFocus 事件中处理它。
于 2013-08-22T05:12:52.047 回答
2
你没有错过任何东西。开箱即用的工具箱中没有可编辑的组合框。
您可能已经尝试过 winrt xaml 工具包@http ://winrtxamltoolkit.codeplex.com/ 但它也没有。太糟糕了，因为它是免费的。
您可能已经看过 ComponentOne @ http://www.componentone.com/SuperProducts/StudioWinRTXAML/ 但这也没有。
您可能看过 Infragistics @ http://www.infragistics.com/products/technology-previews/windows8/ 但该工具包仍处于“预览”状态。
您可能看过 Telerik @ http://www.telerik.com/products/windows-8/overview.aspx 他们有一个组合框http://www.telerik.com/products/windows-8/controls/combo-盒子.aspx
但你可能想要一些免费的东西。目前没有 Microsoft XAML 工具包。所以你需要自己构建或者找一个开源项目。我暂时找不到这样的项目。
但是什么是真正的可编辑组合框？一个标准的组合框和一个文本框，对吧？
于 2013-04-22T20:40:22.007 回答
2
通过设置
combobox.ComboBoxMode = ComboBoxModes.Editable
在syncfusion SfComboBox 中，您可以编辑组合框。
问候，
埃拉瓦拉桑 M
于 2015-10-22T05:05:27.737 回答
2
我知道这是一个老问题，但对于像我这样的新搜索者，我发现 ComboBox.IsEditable属性很好
于 2018-08-01T11:42:59.363 回答
1
<AutoSuggestBox PlaceholderText="Company">
<AutoSuggestBox.QueryIcon>
<SymbolIcon Symbol="find"/>
</AutoSuggestBox.QueryIcon>
</AutoSuggestBox>
于 2018-04-18T14:32:48.383 回答
0
我到处寻找可搜索组合框，并决定编写自己的组合框。它不像您的可编辑组合框，但会在键入时过滤组合框中的选项。也许这可以帮助某人。
您将像这样定义一个新控件：
<control:SearchableComboBox Margin='5'
x:Name='ComboBoxCountry'
ItemsSourceList='{Binding CountryList}'
ItemsSourceListBase='{Binding CountryListBase}'
PlaceholderText='Select Country'/>
不幸的是，您仍然需要提供一个重复的列表 CountryListBase。如果您有改进的建议，请告诉我！
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using Windows.System;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Input;
namespace eMoyoConnect.Controls
{
public class SearchableComboBox : ComboBox
{
public ObservableCollection<string> ItemsSourceList
{
get { return (ObservableCollection<string>)GetValue(ItemsSourceListProperty); }
set
{
SetValue(ItemsSourceListProperty, value);
this.ItemsSource = ItemsSourceList;
}
}
public static readonly DependencyProperty ItemsSourceListProperty =
DependencyProperty.Register("ItemsSourceList", typeof(ObservableCollection<string>), typeof(SearchableComboBox),
new PropertyMetadata(null, ItemsSourceListChanged));
private static void ItemsSourceListChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var plv = d as SearchableComboBox;
plv.ItemsSource = e.NewValue;
}
public Collection<string> ItemsSourceListBase
{
get { return (Collection<string>)GetValue(ItemsSourceListBaseProperty); }
set
{
SetValue(ItemsSourceListBaseProperty, value);
this.ItemsSource = ItemsSourceListBase;
}
}
public static readonly DependencyProperty ItemsSourceListBaseProperty =
DependencyProperty.Register("ItemsSourceListBase", typeof(Collection<string>), typeof(SearchableComboBox),
new PropertyMetadata(null, ItemsSourceListBaseChanged));
private static void ItemsSourceListBaseChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var plv = d as SearchableComboBox;
plv.ItemsSource = e.NewValue;
}
string FilterString = "";
protected override void OnKeyDown(KeyRoutedEventArgs e)
{
if (IsLetterOrSpace(e.Key))
{
if (e.Key == VirtualKey.Space)
FilterString += " ";
else
FilterString += e.Key.ToString();
FilterList(FilterString);
this.ItemsSource = ItemsSourceList;
if (ItemsSourceList.Count > 0)
this.SelectedIndex = 0;
}
else if (e.Key == VirtualKey.Back)
{
if (FilterString.Length > 0)
{
FilterString = FilterString.Substring(0, FilterString.Length - 1);
FilterList(FilterString);
this.ItemsSource = ItemsSourceList;
if (ItemsSourceList.Count > 0)
this.SelectedIndex = 0;
}
}
if (e.Key != VirtualKey.Space)
{
base.OnKeyDown(e);
}
}
protected override void OnGotFocus(RoutedEventArgs e)
{
string selectedValue = "";
if (this.SelectedValue != null)
selectedValue = (string)this.SelectedValue;
FilterString = "";
FilterList(FilterString);
if (!string.IsNullOrEmpty(selectedValue))
this.SelectedValue = selectedValue;
}
internal void FilterList(string FilterString)
{
ItemsSourceList.Clear();
IEnumerable<string> list;
if (!string.IsNullOrEmpty(FilterString))
list = ItemsSourceListBase.Where(x => x.StartsWith(FilterString));
else
list = ItemsSourceListBase;
foreach (var item in list)
ItemsSourceList.Add(item);
}
private bool IsLetterOrSpace(VirtualKey key)
{
return (key == VirtualKey.A
|| key == VirtualKey.B
|| key == VirtualKey.C
|| key == VirtualKey.D
|| key == VirtualKey.E
|| key == VirtualKey.F
|| key == VirtualKey.G
|| key == VirtualKey.H
|| key == VirtualKey.I
|| key == VirtualKey.J
|| key == VirtualKey.K
|| key == VirtualKey.L
|| key == VirtualKey.M
|| key == VirtualKey.N
|| key == VirtualKey.O
|| key == VirtualKey.P
|| key == VirtualKey.Q
|| key == VirtualKey.R
|| key == VirtualKey.S
|| key == VirtualKey.T
|| key == VirtualKey.U
|| key == VirtualKey.V
|| key == VirtualKey.W
|| key == VirtualKey.X
|| key == VirtualKey.Y
|| key == VirtualKey.Z
|| key == VirtualKey.Space);
}
}
}
于 2014-12-22T10:28:12.323 回答