WPF,datepicker加上时分秒的选择，年月日时分秒

自定义控件

先看效果
不想自己撸代码的可以使用免费的XiaFControl控件库，在nuget包中搜索XiaFControl。各种控件都有哦！
示例代码：
github示例demo代码https://github.com/LiuliuMao/XiaFControl
gitee示例demo代码https://gitee.com/lm961031/xia-fcontrol
QQ交流群：371769310
下面直接上代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;

namespace LAP_A.Resource.Controller
{
    public class DateTimePicker : Control
    {
        List<int> hours, mins, secs;
        ListBox con_hours, con_mins, con_secs;
        Calendar calendar;
        ToggleButton toggle;
        Button btnOk;
        static DateTimePicker()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(DateTimePicker), new FrameworkPropertyMetadata(typeof(DateTimePicker)));
        }

        public override void OnApplyTemplate()
        {
            base.OnApplyTemplate();
            hours = new List<int>();
            mins = new List<int>();
            secs = new List<int>();
            con_hours = GetTemplateChild("PART_hours") as ListBox;
            con_mins = GetTemplateChild("PART_mins") as ListBox;
            con_secs = GetTemplateChild("PART_secs") as ListBox;
            calendar = GetTemplateChild("PART_calendar") as Calendar;
            btnOk = GetTemplateChild("PART_Confirm") as Button;
            toggle = GetTemplateChild("PART_togg") as ToggleButton;
            for (int i = 0; i < 60; i++)
            {
                if (i < 24)
                {
                    hours.Add(i);
                }
                mins.Add(i);
                secs.Add(i);
            }
            con_hours.ItemsSource = hours;
            con_mins.ItemsSource = mins;
            con_secs.ItemsSource = secs;
            btnOk.Click -= BtnOk_Click;
            btnOk.Click += BtnOk_Click;
        }

        private void BtnOk_Click(object sender, RoutedEventArgs e)
        {
            DateTime? time = calendar.SelectedDate;
            if (time == null)
                time = DateTime.Today;
            var span = new TimeSpan();
            if (con_hours.SelectedItem is int hour)
            {
                span+=new TimeSpan(hour,0,0);
            }
            if (con_mins.SelectedItem is int mins)
            {
                span+=new TimeSpan(0,mins,0);
            }
            if (con_secs.SelectedItem is int sec)
            {
                span+=new TimeSpan(0,0,sec);
            }
            EditTimeValue = time+span;
            toggle.IsChecked = false;
        }

        public DateTime? EditTimeValue
        {
            get { return (DateTime)GetValue(EditTimeValueProperty); }
            set
            {
                SetValue(EditTimeValueProperty, value);
                DisPlayValue = value?.ToString("yyyy-MM-dd HH:mm:ss");
            }
        }

        // Using a DependencyProperty as the backing store for EditTimeValue.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty EditTimeValueProperty =
            DependencyProperty.Register("EditTimeValue", typeof(DateTime), typeof(DateTimePicker), new PropertyMetadata(DateTime.Now));




        public string DisPlayValue
        {
            get { return (string)GetValue(DisPlayValueProperty); }
            set { SetValue(DisPlayValueProperty, value); }
        }

        // Using a DependencyProperty as the backing store for DisPlayValue.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty DisPlayValueProperty =
            DependencyProperty.Register("DisPlayValue", typeof(string), typeof(DateTimePicker), new PropertyMetadata(default));


    }
}

资源样式

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:con="clr-namespace:LAP_A.Resource.Controller">
    <Style TargetType="con:DateTimePicker">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate>
                    <Border BorderBrush="Gray" BorderThickness="2" CornerRadius="5">
                        <Grid>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition></ColumnDefinition>
                                <ColumnDefinition Width="30"></ColumnDefinition>
                            </Grid.ColumnDefinitions>
                            <TextBox Grid.Column="0" Text="{Binding RelativeSource={RelativeSource AncestorType=con:DateTimePicker}, Path=DisPlayValue,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" BorderBrush="Transparent" BorderThickness="0"></TextBox>
                            <ToggleButton x:Name="PART_togg" Grid.Column="1" Background="Transparent" BorderThickness="0" Margin="2">
                                <Image Source="/Resource/Images/datetime.png"/>
                            </ToggleButton>
                            <Popup StaysOpen="False" IsOpen="{Binding ElementName=PART_togg, Path=IsChecked,Mode=TwoWay}">
                                <Grid>
                                    <Grid.ColumnDefinitions>
                                        <ColumnDefinition></ColumnDefinition>
                                        <ColumnDefinition MinWidth="180"></ColumnDefinition>
                                    </Grid.ColumnDefinitions>
                                    <Grid.RowDefinitions>
                                        <RowDefinition></RowDefinition>
                                        <RowDefinition></RowDefinition>
                                    </Grid.RowDefinitions>
                                    <Calendar x:Name="PART_calendar" BorderBrush="Transparent" Margin="0,-3,0,-3" Background="White" BorderThickness="0"></Calendar>
                                    <Grid Grid.Column="1">
                                        <Grid.ColumnDefinitions>
                                            <ColumnDefinition MinWidth="60"></ColumnDefinition>
                                            <ColumnDefinition MinWidth="60"></ColumnDefinition>
                                            <ColumnDefinition MinWidth="60"></ColumnDefinition>
                                        </Grid.ColumnDefinitions>
                                        <ListBox MaxHeight="192" BorderThickness="0" x:Name="PART_hours" Grid.Column="0" Background="White">
                                        </ListBox>
                                        <ListBox MaxHeight="192" BorderThickness="0" x:Name="PART_mins" Grid.Column="1" Background="White">
                                        </ListBox>
                                        <ListBox MaxHeight="192" BorderThickness="0" x:Name="PART_secs" Grid.Column="2" Background="White">
                                        </ListBox>
                                    </Grid>
                                    <Button x:Name="PART_Confirm" Content="确定" Background="{DynamicResource Light}" Foreground="White" BorderBrush="Transparent" BorderThickness="0" Grid.Row="1" Grid.ColumnSpan="2"></Button>
                                </Grid>
                            </Popup>
                        </Grid>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>