WechatBakTool/Dialog/MsgDatetimePicker.xaml

<Window x:Class="WechatBakTool.Dialog.MsgDatetimePicker"
        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:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WechatBakTool.Dialog"
        xmlns:local2="clr-namespace:WechatBakTool.ViewModel"
        WindowStartupLocation="CenterScreen"
        mc:Ignorable="d"
        Title="选择导出日期" Height="350" Width="330">
    <Window.Resources>
        <local2:DateTypeConverter x:Key="dateTypeConverter" />
    </Window.Resources>
    <Grid>
        <RadioButton GroupName="Date" Content="全部" HorizontalAlignment="Left" Margin="45,60,0,0" VerticalAlignment="Top" IsChecked="{Binding DateType, Converter={StaticResource ResourceKey=dateTypeConverter}, ConverterParameter=1}"/>
        <RadioButton GroupName="Date" Content="昨天" HorizontalAlignment="Left" Margin="45,90,0,0" VerticalAlignment="Top" IsChecked="{Binding DateType, Converter={StaticResource ResourceKey=dateTypeConverter}, ConverterParameter=2}"/>
        <RadioButton GroupName="Date" Content="指定日期" HorizontalAlignment="Left" Margin="45,120,0,0" VerticalAlignment="Top" IsChecked="{Binding DateType, Converter={StaticResource ResourceKey=dateTypeConverter}, ConverterParameter=3}"/>
        <DatePicker  HorizontalAlignment="Left" Margin="45,140,0,0" VerticalAlignment="Top" SelectedDate="{Binding PickDate}"/>
        <RadioButton GroupName="Date" Content="指定范围日期" HorizontalAlignment="Left" Margin="45,180,0,0" VerticalAlignment="Top" IsChecked="{Binding DateType, Converter={StaticResource ResourceKey=dateTypeConverter}, ConverterParameter=4}"/>
        <DatePicker Margin="45,200,0,0" VerticalAlignment="Top" SelectedDate="{Binding StartDate}" HorizontalAlignment="Left" Width="100"/>
        <DatePicker Margin="185,200,0,0" VerticalAlignment="Top" SelectedDate="{Binding EndDate}" HorizontalAlignment="Left" Width="100"/>
        <Label Content="至" Margin="0,200,0,0" VerticalAlignment="Top" HorizontalAlignment="Center" Width="22"/>
        <Button Content="提交" Margin="100,265,0,0" VerticalAlignment="Top" Height="40" Click="Button_Click" HorizontalAlignment="Left" Width="140"/>
    </Grid>
</Window>