kmpdfkit_demo/Demo/Examples/Compdfkit_Tools/Common/BaseControl/DropDownNumberBoxControl.xaml

<UserControl x:Class="Compdfkit_Tools.Common.DropDownNumberBoxControl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:cpdfcommon="clr-namespace:Compdfkit_Tools.Common"
             mc:Ignorable="d" 
             d:DesignHeight="30" d:DesignWidth="100">
    <UserControl.Resources>
        <cpdfcommon:BoolToVisibleConverter x:Key="BoolToVisibleConverter"></cpdfcommon:BoolToVisibleConverter>
        <cpdfcommon:BoolToCollapsedConverter x:Key="BoolToCollapsedConverter"></cpdfcommon:BoolToCollapsedConverter>
        <SolidColorBrush x:Key="TextBox.Static.Border" Color="#FFABAdB3"/>
        <SolidColorBrush x:Key="TextBox.MouseOver.Border" Color="#FF7EB4EA"/>
        <SolidColorBrush x:Key="TextBox.Focus.Border" Color="#FF569DE5"/>
        <Style x:Key="LimitedNumberBoxWithUnit" TargetType="{x:Type TextBox}">
            <Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
            <Setter Property="BorderBrush" Value="Transparent"/>
            <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
            <Setter Property="BorderThickness" Value="1"/>
            <Setter Property="KeyboardNavigation.TabNavigation" Value="None"/>
            <Setter Property="HorizontalContentAlignment" Value="Left"/>
            <Setter Property="VerticalContentAlignment" Value="Center"/>
            <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
            <Setter Property="AllowDrop" Value="true"/>
            <Setter Property="ScrollViewer.PanningMode" Value="VerticalFirst"/>
            <Setter Property="Stylus.IsFlicksEnabled" Value="False"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type TextBox}">
                        <Border x:Name="border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
                            <Grid>
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="*"/>
                                    <ColumnDefinition Width="20"/>
                                </Grid.ColumnDefinitions>
                                <ScrollViewer Grid.Column="0" x:Name="PART_ContentHost" Focusable="false" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden" Margin="5,0,0,0"/>
                                <TextBlock Grid.Column="1" Text="{Binding Unit, RelativeSource={RelativeSource AncestorType=UserControl}}" HorizontalAlignment="Right" VerticalAlignment="Center"/>
                            </Grid>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <Style x:Key="TransparentToggleButton" TargetType="{x:Type ToggleButton}">
            <Setter Property="Background" Value="Transparent"/>
            <Setter Property="BorderBrush" Value="Transparent"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type ToggleButton}">
                        <Border x:Name="border"
                  Background="{TemplateBinding Background}"
                  BorderBrush="{TemplateBinding BorderBrush}"
                  BorderThickness="{TemplateBinding BorderThickness}"
                  Padding="{TemplateBinding Padding}">
                            <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                              VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                              RecognizesAccessKey="True"/>
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsChecked" Value="True">
                                <Setter TargetName="border" Property="Opacity" Value="0"/>
                            </Trigger>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter TargetName="border" Property="Opacity" Value="0"/>
                            </Trigger>
                            <Trigger Property="IsPressed" Value="True">
                                <Setter TargetName="border" Property="Opacity" Value="0"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>


        <Style x:Key="PresetComboBox" TargetType="{x:Type ComboBox}">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type ComboBox}">
                        <Border x:Name="border" BorderBrush="{StaticResource TextBox.Static.Border}" BorderThickness="1" Background="#FFFFFF">
                            <Grid>
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition></ColumnDefinition>
                                    <ColumnDefinition Width="15"></ColumnDefinition>
                                </Grid.ColumnDefinitions>
                                <Grid Grid.Column="1">
                                    <Path Fill="#CDCDCD" Stroke="#CDCDCD" Grid.Column="1" Height="4.8" Width="7.38" Stretch="Fill" Visibility="{Binding Path=IsDropDownOpen,Converter={StaticResource BoolToCollapsedConverter},RelativeSource={RelativeSource TemplatedParent}}">
                                        <Path.Data>
                                            <PathGeometry Figures="M917.284001 297.722752c-5.406127-5.437849-13.06762-8.396227-21.479197-8.396227-9.611915 0-18.953677 3.844561-25.713638 10.543124L511.980046 659.992589 153.873018 299.91672c-6.729262-6.745634-16.072047-10.619872-25.654286-10.619872-8.470929 0-16.131399 2.989077-21.598924 8.457626-12.301164 12.435217-11.32493 33.69031 2.192945 47.312562l376.764969 378.821815c6.758937 6.788613 15.860223 10.723226 25.052582 10.8143l3.425006 0c8.981559-0.301875 17.814738-4.205788 24.423249-10.8143l376.733247-378.852514C928.728658 331.382363 929.690566 310.113967 917.284001 297.722752" ></PathGeometry>
                                        </Path.Data>
                                    </Path>
                                    <Path Fill="#CDCDCD" Stroke="#CDCDCD" Grid.Column="1" Height="4.8" Width="7.38" Stretch="Fill" Visibility="{Binding Path=IsDropDownOpen,Converter={StaticResource BoolToVisibleConverter},RelativeSource={RelativeSource TemplatedParent}}">
                                        <Path.Data>
                                            <PathGeometry Figures="M511.99386 361.932146L130.652665 743.283574c-14.944364 14.95869-39.187511 14.95869-54.14313 0-14.95869-14.95562-14.95869-39.187511 0-54.143131l408.411736-408.426063c14.95869-14.95562 39.187511-14.95562 54.144155 0l408.426063 408.426063c7.478322 7.478322 11.217483 17.275455 11.217482 27.072589 0 9.79611-3.739161 19.59222-11.217482 27.070542-14.95562 14.95869-39.187511 14.95869-54.143131 0L511.99386 361.932146z" ></PathGeometry>
                                        </Path.Data>
                                    </Path>
                                </Grid>
                                <Grid Grid.Column="0" Grid.ColumnSpan="2">
                                    <ToggleButton IsChecked="{Binding Path=IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"
                                              ClickMode="Press" Style="{StaticResource TransparentToggleButton}"></ToggleButton>
                                    <Popup Name="popup"
                                   IsOpen="{TemplateBinding IsDropDownOpen}"
                                   Placement="Bottom" AllowsTransparency="True" PopupAnimation="Fade" VerticalOffset="1">
                                        <Border MinWidth="{TemplateBinding ActualWidth}"
                                        MaxHeight="{TemplateBinding MaxDropDownHeight}">
                                            <ScrollViewer MaxHeight="{TemplateBinding MaxDropDownHeight}"
                                                  HorizontalScrollBarVisibility="Auto"
                                                  VerticalScrollBarVisibility="Auto">
                                                <Border BorderBrush ="LightGray" BorderThickness="1">
                                                    <StackPanel Background="#FFFFFF" MinHeight="20"
                                                    IsItemsHost="True"/>
                                                </Border>
                                            </ScrollViewer>
                                        </Border>
                                    </Popup>
                                </Grid>
                            </Grid>
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="true">
                                <Setter Property="BorderBrush" TargetName="border" Value="{StaticResource TextBox.MouseOver.Border}"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </UserControl.Resources>
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="1*"></ColumnDefinition>
            <ColumnDefinition Width="20"></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <ComboBox Grid.ColumnSpan="2" x:Name="ComboBox" Background="#FFFFFF" Style="{StaticResource PresetComboBox}" SelectionChanged="ComboBox_SelectionChanged" ></ComboBox>
        <TextBox x:Name="TextBox" Text="{Binding Text, RelativeSource={RelativeSource AncestorType=UserControl}, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Style="{StaticResource LimitedNumberBoxWithUnit}" HorizontalContentAlignment="Center" InputMethod.IsInputMethodEnabled="False" PreviewTextInput="TextBox_PreviewTextInput" PreviewKeyDown="TextBox_PreviewKeyDown" TextChanged="TextBox_TextChanged" >
        </TextBox>
    </Grid>
</UserControl>