wpf应用程序中的自定义组合框

Posted 2023-02-25

【中文标题】wpf应用程序中的自定义组合框

【英文标题】：custom combobox in wpf Application

【发布时间】：2013-04-29 20:23:45

【问题描述】：

我是 WPF 应用程序的新手。我需要像这张图片一样自定义我的组合框。

我试过这个例子 http://www.eidias.com/Blog/2012/2/20/customizing-wpf-combo-box-style

    <Window x:Class="win.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Window1"  Height="300" Width="300" Background="Red">
    <Window.Resources>
        <ControlTemplate x:Key="CustomToggleButton" TargetType="ToggleButton">
            <Grid>
                <Border Name="Border" />
                <Border Name="SmallBorder" />
                <Path Name="Arrow" />
            </Grid>
        </ControlTemplate>
        <Style TargetType="x:Type ComboBoxItem">
            <Setter Property="FrameworkElement.OverridesDefaultStyle" Value="True" />
            <Setter Property="Control.Template">
                <Setter.Value>
                    <ControlTemplate TargetType="x:Type ComboBoxItem">
                        <Border>
                            <ContentPresenter />
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
        <Style TargetType="x:Type ComboBox">
            <Setter Property="FrameworkElement.OverridesDefaultStyle" Value="True" />
            <Setter Property="Control.Template">
                <Setter.Value>
                    <ControlTemplate TargetType="ComboBox">
                        <Grid>
                            <ToggleButton Template="StaticResource CustomToggleButton" />
                            <ContentPresenter />
                            <TextBox />
                            <Popup>
                                <Grid>
                                    <Border>
                                        <ScrollViewer>
                                            <ItemsPresenter />
                                        </ScrollViewer>
                                    </Border>
                                </Grid>
                            </Popup>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>
    <Grid>
        <ComboBox Grid.Column="1" Height="40" Width="200" >
            <ComboBoxItem Name="item1">item1</ComboBoxItem>
            <ComboBoxItem Name="item2">item2</ComboBoxItem>
            <ComboBoxItem Name="item3">item3</ComboBoxItem>
        </ComboBox>
    </Grid>
</Window>

这个输出像文本框一样工作。请帮帮我！

【参考方案1】：

我也喜欢这种格式并决定复制它。请在下面找到 XAML。希望它可以帮助某人......

<Window x:Class="ComboStyle.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">

<Window.Resources>
    <ControlTemplate x:Key="ComboBoxToggleButton" TargetType="x:Type ToggleButton">
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition />
                <ColumnDefinition Width="20" />
            </Grid.ColumnDefinitions>
            <Border
                  x:Name="Border" 
                  Grid.ColumnSpan="2"
                  CornerRadius="0"
                  Background="#FF3F3F3F"
                  BorderBrush="#FF97A0A5"
                  BorderThickness="1" />
            <Border 
                  Grid.Column="0"
                  CornerRadius="0" 
                  Margin="1" 
                  Background="#FF3F3F3F" 
                  BorderBrush="#FF97A0A5"
                  BorderThickness="0,0,1,0" />
            <Path 
                  x:Name="Arrow"
                  Grid.Column="1"     
                  Fill="White"
                  HorizontalAlignment="Center"
                  VerticalAlignment="Center"
                  Data="M0,0 L0,2 L4,6 L8,2 L8,0 L4,4 z"
                />
        </Grid>
        <!--<ControlTemplate.Triggers>
            <Trigger Property="ToggleButton.IsMouseOver" Value="true">
                <Setter TargetName="Border" Property="Background" Value="#808080" />
            </Trigger>
            <Trigger Property="ToggleButton.IsChecked" Value="true">
                <Setter TargetName="Border" Property="Background" Value="#E0E0E0" />
            </Trigger>
            <Trigger Property="IsEnabled" Value="False">
                <Setter TargetName="Border" Property="Background" Value="#EEEEEE" />
                <Setter TargetName="Border" Property="BorderBrush" Value="#AAAAAA" />
                <Setter Property="Foreground" Value="#888888"/>
                <Setter TargetName="Arrow" Property="Fill" Value="#888888" />
            </Trigger>
        </ControlTemplate.Triggers>-->
    </ControlTemplate>

    <ControlTemplate x:Key="ComboBoxTextBox" TargetType="x:Type TextBox">
        <Border x:Name="PART_ContentHost" Focusable="False" Background="TemplateBinding Background" />
    </ControlTemplate>

    <Style x:Key="x:Type ComboBox" TargetType="x:Type ComboBox">
        <Setter Property="SnapsToDevicePixels" Value="true"/>
        <Setter Property="OverridesDefaultStyle" Value="true"/>
        <Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/>
        <Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
        <Setter Property="ScrollViewer.CanContentScroll" Value="true"/>
        <Setter Property="MinWidth" Value="120"/>
        <Setter Property="MinHeight" Value="20"/>
        <Setter Property="Foreground" Value="White"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="x:Type ComboBox">
                    <Grid>
                        <ToggleButton 
                            Name="ToggleButton" 
                            Template="StaticResource ComboBoxToggleButton" 
                            Grid.Column="2" 
                            Focusable="false"
                            IsChecked="Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource=RelativeSource TemplatedParent"
                            ClickMode="Press">
                        </ToggleButton>
                        <ContentPresenter Name="ContentSite" IsHitTestVisible="False"  Content="TemplateBinding SelectionBoxItem"
                            ContentTemplate="TemplateBinding SelectionBoxItemTemplate"
                            ContentTemplateSelector="TemplateBinding ItemTemplateSelector"
                            Margin="3,3,23,3"
                            VerticalAlignment="Center"
                            HorizontalAlignment="Left" />
                        <TextBox x:Name="PART_EditableTextBox"
                            Style="x:Null" 
                            Template="StaticResource ComboBoxTextBox" 
                            HorizontalAlignment="Left" 
                            VerticalAlignment="Center" 
                            Margin="3,3,23,3"
                            Focusable="True" 
                            Background="#FF3F3F3F"
                            Foreground="Green"
                            Visibility="Hidden"
                            IsReadOnly="TemplateBinding IsReadOnly"/>
                        <Popup 
                            Name="Popup"
                            Placement="Bottom"
                            IsOpen="TemplateBinding IsDropDownOpen"
                            AllowsTransparency="True" 
                            Focusable="False"
                            PopupAnimation="Slide">

                            <Grid Name="DropDown"
                              SnapsToDevicePixels="True"                
                              MinWidth="TemplateBinding ActualWidth"
                              MaxHeight="TemplateBinding MaxDropDownHeight">
                                <Border 
                                x:Name="DropDownBorder"
                                Background="#FF3F3F3F"

                                BorderThickness="1"
                                BorderBrush="#888888"/>
                                <ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True">
                                    <StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" />
                                </ScrollViewer>
                            </Grid>
                        </Popup>
                    </Grid>
                    <ControlTemplate.Triggers>
                        <Trigger Property="HasItems" Value="false">
                            <Setter TargetName="DropDownBorder" Property="MinHeight" Value="95"/>
                        </Trigger>
                        <Trigger Property="IsEnabled" Value="false">
                            <Setter Property="Foreground" Value="#888888"/>
                        </Trigger>
                        <Trigger Property="IsGrouping" Value="true">
                            <Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
                        </Trigger>
                        <Trigger SourceName="Popup" Property="Popup.AllowsTransparency" Value="true">
                            <Setter TargetName="DropDownBorder" Property="CornerRadius" Value="0"/>
                            <Setter TargetName="DropDownBorder" Property="Margin" Value="0,2,0,0"/>
                        </Trigger>
                        <Trigger Property="IsEditable"  Value="true">
                            <Setter Property="IsTabStop" Value="false"/>
                            <Setter TargetName="PART_EditableTextBox" Property="Visibility" Value="Visible"/>
                            <Setter TargetName="ContentSite" Property="Visibility" Value="Hidden"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Style.Triggers>
        </Style.Triggers>
    </Style>

    <!-- SimpleStyles: ComboBoxItem -->
    <Style x:Key="x:Type ComboBoxItem" TargetType="x:Type ComboBoxItem">
        <Setter Property="SnapsToDevicePixels" Value="true"/>
        <Setter Property="Foreground" Value="White"/>
        <Setter Property="OverridesDefaultStyle" Value="true"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="x:Type ComboBoxItem">
                    <Border Name="Border"
                              Padding="2"
                              SnapsToDevicePixels="true">
                        <ContentPresenter />
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsHighlighted" Value="true">
                            <Setter TargetName="Border" Property="Background" Value="#FF4F4F4F"/>
                        </Trigger>
                        <Trigger Property="IsEnabled" Value="false">
                            <Setter Property="Foreground" Value="#888888"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources>


<Grid>
    <Border Padding="10" Background="#FF3F3F3F">
         <ComboBox Grid.Column="1" Height="30" Width="250" >
            <ComboBoxItem Name="Item1">Item1</ComboBoxItem>
            <ComboBoxItem Name="Item2">Item2</ComboBoxItem>
            <ComboBoxItem Name="Item3">Item3</ComboBoxItem>
            <ComboBoxItem Name="Item4">Item4</ComboBoxItem>
            <ComboBoxItem Name="Item5">Item5</ComboBoxItem>
            <ComboBoxItem Name="Item6">Item6</ComboBoxItem>
        </ComboBox>           
    </Border>

</Grid>

【参考方案2】：

查看此链接：

http://www.eidias.com/Blog/2012/2/20/customizing-wpf-combo-box-style

这是一个博客，其中包含有关如何制作自定义 Combobox 的示例代码。他正在制作的自定义组合框看起来非常像您需要的组合框。所以我认为这对你很有用。

【讨论】：

我尝试了相同的示例，但没有得到输出。它像文本框一样工作。没有应用任何样式！！

这和原发帖人说他试过的一样。它不起作用。

【参考方案3】：

这是 WPF ComboBox 的完整样式。它也很容易定制。

http://www.wpfhelper.com/index.php/styles-in-wpf/combobox/15-combobox-style-in-wpf

代码很长，所以我不会在这里全部发布。但是，这里是基本的 ComboBox 样式：

<Style TargetType="x:Type ComboBox">         
    <Setter Property="Foreground" Value="Gray" />
    <Setter Property="BorderBrush" Value="Gray" />
    <Setter Property="Background" Value="White" />
    <Setter Property="SnapsToDevicePixels" Value="true"/>
    <Setter Property="OverridesDefaultStyle" Value="true"/>
    <Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/>
    <Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
    <Setter Property="ScrollViewer.CanContentScroll" Value="true"/>
    <Setter Property="FontSize" Value="16" />
    <Setter Property="FontWeight" Value="Bold" />
    <Setter Property="MinWidth" Value="50"/>
    <Setter Property="MinHeight" Value="32"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="ComboBox">
                <Grid>
                    <ToggleButton
                            Name="ToggleButton"
                            BorderBrush="TemplateBinding BorderBrush"
                            Background="TemplateBinding Background"
                        Foreground="TemplateBinding Foreground"
                            Style="StaticResource ComboBoxToggleButton"
                            Grid.Column="2"
                            Focusable="false"
                            IsChecked="Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource=RelativeSource TemplatedParent"
                            ClickMode="Press">
                    </ToggleButton>
                    <ContentPresenter
                            Name="ContentSite"
                            IsHitTestVisible="False"
                            Content="TemplateBinding SelectionBoxItem"
                            ContentTemplate="TemplateBinding SelectionBoxItemTemplate"
                            ContentTemplateSelector="TemplateBinding ItemTemplateSelector"
                            Margin="10,3,30,3"
                            VerticalAlignment="Center"
                            HorizontalAlignment="Center" />
                    <TextBox x:Name="PART_EditableTextBox"
                            Style="x:Null"
                            Template="StaticResource ComboBoxTextBox"
                            HorizontalAlignment="Center"
                            VerticalAlignment="Center"
                            Margin="3,3,23,3"
                            Focusable="True"                               
                            Visibility="Hidden"
                            IsReadOnly="TemplateBinding IsReadOnly"/>
                    <Popup
                            Name="Popup"
                            Placement="Bottom"
                            IsOpen="TemplateBinding IsDropDownOpen"
                            AllowsTransparency="True"
                            Focusable="False"
                            PopupAnimation="Slide">
                        <Grid
                              Name="DropDown"
                              SnapsToDevicePixels="True"               
                              MinWidth="TemplateBinding ActualWidth"
                              MaxHeight="TemplateBinding MaxDropDownHeight">
                            <Border
                                    x:Name="DropDownBorder"
                                    Background="White"
                                    BorderThickness="2"
                                    BorderBrush="Gray"/>
                            <ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True">
                                <StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" />
                            </ScrollViewer>
                        </Grid>
                    </Popup>

                </Grid>
                <ControlTemplate.Triggers>
                    <Trigger Property="HasItems" Value="false">
                        <Setter TargetName="DropDownBorder" Property="MinHeight" Value="95"/>
                    </Trigger>
                    <Trigger Property="IsGrouping" Value="true">
                        <Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
                    </Trigger>
                    <Trigger SourceName="Popup" Property="Popup.AllowsTransparency" Value="true">
                        <Setter TargetName="DropDownBorder" Property="CornerRadius" Value="0"/>
                        <Setter TargetName="DropDownBorder" Property="Margin" Value="0,2,0,0"/>
                    </Trigger>
                    <Trigger Property="IsEditable" Value="true">
                        <Setter Property="IsTabStop" Value="false"/>
                        <Setter TargetName="PART_EditableTextBox" Property="Visibility"    Value="Visible"/>
                        <Setter TargetName="ContentSite" Property="Visibility" Value="Hidden"/>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>