PDFOffice_Windows_exe/PDF Office/CustomControl/WritableComboBox.xaml

<UserControl
    x:Class="PDF_Office.CustomControl.WritableComboBox"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:local="clr-namespace:PDF_Office.CustomControl"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    d:DesignHeight="32"
    d:DesignWidth="200"
    mc:Ignorable="d">
    <Grid>
        <ComboBox
            x:Name="writableComboBox"
            Grid.Column="1"
            MinWidth="58"
            MinHeight="32"
            VerticalContentAlignment="Center"
            SelectionChanged="writableComboBox_SelectionChanged"
            SelectedIndex="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:WritableComboBox}, Path=SelectedIndex}"
            Visibility="Visible">
            <ComboBoxItem Tag="AllPage" Visibility="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:WritableComboBox}, Path=IsAllPageVisible}">全部页面</ComboBoxItem>
            <ComboBoxItem Tag="OddPage">奇数页</ComboBoxItem>
            <ComboBoxItem Tag="EvenPage">偶数页</ComboBoxItem>
            <ComboBoxItem Tag="CustomPage">自定义页面</ComboBoxItem>
        </ComboBox>
        <TextBox
            x:Name="writableTextBox"
            Grid.Column="0"
            MinHeight="{Binding ElementName=writableComboBox, Path=MinHeight}"
            HorizontalAlignment="Left"
            VerticalContentAlignment="Center"
            LostFocus="writableTextBox_LostFocus"
            PreviewKeyDown="writableTextBox_PreviewKeyDown"
            TextChanged="writableTextBox_TextChange"
            Visibility="Hidden" />

    </Grid>
</UserControl>