WPF 日期选择器和时间选择器

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WPF 日期选择器和时间选择器

前言

WPF中自带的有日期选择器，但是没有时间选择器。

日期和字符串互相转换

日期转字符串

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DateTime dateTime = DateTime.Now;
string timeStr = dateTime.ToString("yyyy-MM-dd HH:mm:ss");
Console.WriteLine(timeStr);

方式2

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string.Format("yyyy-MM-dd", DateTime.Now);

字符串转日期

直接转换

格式有要求，必须是yyyy-MM-dd hh:mm:ss或者yyyy/MM/dd hh:mm:ss

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DateTime dateTime2 = Convert.ToDateTime(timeStr);
Console.WriteLine(dateTime2.ToString());

示例2

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DateTime dateTime2 = Convert.ToDateTime("2011/05/26 10:30");
Console.WriteLine(dateTime2.ToString());

指定格式

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DateTimeFormatInfo dtFormat = new System.Globalization.DateTimeFormatInfo();
dtFormat.ShortDatePattern = "yyyy/MM/dd";
DateTime dt = Convert.ToDateTime("2011/05/26 10:30", dtFormat);
Console.WriteLine(dt.ToString());

时间也指定

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DateTimeFormatInfo dtFormat = new System.Globalization.DateTimeFormatInfo();
dtFormat.ShortDatePattern = "yyyy/MM/dd";
dtFormat.ShortTimePattern = "hh:mm:ss";
DateTime dt = Convert.ToDateTime("2011/05/26 10:30", dtFormat);
Console.WriteLine(dt.ToString());

日期选择器

基本使用

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<DatePicker BorderBrush="#f0f0f0" />

设置默认日期和回调

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<DatePicker
                  Name="reportDatePicker"
                  Grid.Row="1"
                  Grid.Column="1"
                  Margin="0,0,10,0"
                  BorderBrush="#f0f0f0"
                  SelectedDateChanged="DatePicker_SelectedDateChanged" />

代码中

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reportDatePicker.SelectedDate = DateTime.Now;

事件回调

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private void DatePicker_SelectedDateChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
{
  DatePicker dp = (DatePicker)sender;
  Console.WriteLine(dp.SelectedDate.ToString());
}

设置禁止选择的日期

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<DatePicker BorderBrush="#f0f0f0">
  <DatePicker.BlackoutDates>
    <CalendarDateRange End="2/10/2023" Start="2/5/2023" />
    <CalendarDateRange End="2/20/2023" Start="2/15/2023" />
  </DatePicker.BlackoutDates>
</DatePicker>

时间选择器

基本使用

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<local:TimePicker x:Name="reportTimePicker"/>

设置值

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reportTimePicker.Hour = 23;
reportTimePicker.Minute = 30;
reportTimePicker.Second = 0;

获取值

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Console.WriteLine("Hour:" + reportTimePicker.Hour);
Console.WriteLine("Minute:" + reportTimePicker.Minute);
Console.WriteLine("Second:" + reportTimePicker.Second);

双向绑定

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<local:TimeEditer 
                  Hour="{Binding Hour,Mode=TwoWay}" 
                  Minute="{Binding Minute,Mode=TwoWay}" 
                  Second="{Binding Seccond,Mode=TwoWay}" 
                  Width="90" Height="30" HorizontalAlignment="Left"/>

组件代码

TimePicker.cs

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using System;
using System.Timers;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;

namespace ZView
{
    public class TimePicker : Control
    {
        static TimePicker()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(TimePicker), new FrameworkPropertyMetadata(typeof(TimePicker)));
        }

        private TextBox currentTextBox;
        private Button btnUp;
        private Button btnDown;
        private TextBox txt1;
        private TextBox txt2;
        private TextBox txt3;
        private TextBox txt4;

        public TimePicker()
        {
            var newTime = DateTime.Now.AddMinutes(5);
            Hour = newTime.Hour;
            Minute = newTime.Minute;
            Second = newTime.Second;
        }

        public override void OnApplyTemplate()
        {
            base.OnApplyTemplate();
            btnUp = Template.FindName("PART_UP", this) as Button;
            btnDown = Template.FindName("PART_DOWN", this) as Button;
            txt1 = Template.FindName("PART_TXTHOUR", this) as TextBox;
            txt2 = Template.FindName("PART_TXTMINUTE", this) as TextBox;
            txt3 = Template.FindName("PART_TXTSECOND", this) as TextBox;
            txt4 = Template.FindName("PART_TXT4", this) as TextBox;

            txt1.GotFocus += TextBox_GotFocus;
            txt2.GotFocus += TextBox_GotFocus;
            txt3.GotFocus += TextBox_GotFocus;
            txt1.LostFocus += TextBox_LostFocus;
            txt2.LostFocus += TextBox_LostFocus;
            txt3.LostFocus += TextBox_LostFocus;
            txt1.KeyDown += Txt1_KeyDown;
            txt2.KeyDown += Txt1_KeyDown;
            txt3.KeyDown += Txt1_KeyDown;

            txt4.GotFocus += TextBox2_GotFocus;
            txt4.LostFocus += TextBox2_LostFocus;

            this.GotFocus += UserControl_GotFocus;
            this.LostFocus += UserControl_LostFocus;

            this.Repeater(btnUp, (t, num, reset) =>
            {
                if (reset && t.Interval == 500)
                    t.Interval = 50;
                Dispatcher.Invoke(
                    new Action(() =>
                {
                    if (currentTextBox.Name == "PART_TXTHOUR")
                    {
                        int.TryParse(currentTextBox.Text, out int numResult);
                        numResult += num;
                        if (numResult >= 24)
                            numResult = 0;
                        if (numResult < 0)
                            numResult = 23;
                        currentTextBox.Text = numResult.ToString("00");
                    }
                    else if (currentTextBox.Name == "PART_TXTMINUTE")
                    {
                        int.TryParse(currentTextBox.Text, out int numResult);
                        numResult += num;
                        if (numResult >= 60)
                            numResult = 0;
                        if (numResult < 0)
                            numResult = 59;
                        currentTextBox.Text = numResult.ToString("00");
                    }
                    else if (currentTextBox.Name == "PART_TXTSECOND")
                    {
                        int.TryParse(currentTextBox.Text, out int numResult);
                        numResult += num;
                        if (numResult >= 60)
                            numResult = 0;
                        if (numResult < 0)
                            numResult = 59;
                        currentTextBox.Text = numResult.ToString("00");
                    }
                }));
            }, 1);
            this.Repeater(btnDown, (t, num, reset) =>
            {
                if (reset && t.Interval == 500)
                    t.Interval = 50;
                Dispatcher.Invoke(new Action(() =>
                {
                    if (currentTextBox.Name == "PART_TXTHOUR")
                    {
                        int.TryParse(currentTextBox.Text, out int numResult);
                        numResult += num;
                        if (numResult >= 24)
                            numResult = 0;
                        if (numResult < 0)
                            numResult = 23;
                        currentTextBox.Text = numResult.ToString("00");
                    }
                    else if (currentTextBox.Name == "PART_TXTMINUTE")
                    {
                        int.TryParse(currentTextBox.Text, out int numResult);
                        numResult += num;
                        if (numResult >= 60)
                            numResult = 0;
                        if (numResult < 0)
                            numResult = 59;
                        currentTextBox.Text = numResult.ToString("00");
                    }
                    else if (currentTextBox.Name == "PART_TXTSECOND")
                    {
                        int.TryParse(currentTextBox.Text, out int numResult);
                        numResult += num;
                        if (numResult >= 60)
                            numResult = 0;
                        if (numResult < 0)
                            numResult = 59;
                        currentTextBox.Text = numResult.ToString("00");
                    }
                }));
            }, -1);
        }

        private void TextBox_GotFocus(object sender, RoutedEventArgs e)
        {
            var textBox = sender as TextBox;
            textBox.Background = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#0078d7"));
            textBox.Foreground = new SolidColorBrush(Colors.White);
            currentTextBox = textBox;
        }

        private void TextBox_LostFocus(object sender, RoutedEventArgs e)
        {
            var textBox = sender as TextBox;
            textBox.Background = new SolidColorBrush(Colors.Transparent);
            textBox.Foreground = new SolidColorBrush(Colors.Black);
            int.TryParse(currentTextBox.Text, out int numResult);
            currentTextBox.Text = numResult.ToString("00");
        }

        private void UserControl_LostFocus(object sender, RoutedEventArgs e)
        {
            this.BorderBrush = new SolidColorBrush(Color.FromArgb(255, 234, 234, 234));
            NumIncreaseVisible = Visibility.Collapsed;
        }

        private void UserControl_GotFocus(object sender, RoutedEventArgs e)
        {
            this.BorderBrush = new SolidColorBrush(Color.FromArgb(255, 0, 120, 215));
            NumIncreaseVisible = Visibility.Visible;
        }

        private void TextBox2_GotFocus(object sender, RoutedEventArgs e)
        {
            txt3.Focus();
        }

        private void TextBox2_LostFocus(object sender, RoutedEventArgs e)
        {
        }

        public void Repeater(Button btn, Action<Timer, int, bool> callBack, int num, int interval = 500)
        {
            var timer = new Timer { Interval = interval };
            timer.Elapsed += (sender, e) =>
            {
                callBack?.Invoke(timer, num, true);
            };
            btn.PreviewMouseLeftButtonDown += (sender, e) =>
            {
                callBack?.Invoke(timer, num, false);
                timer.Start();
            };
            btn.PreviewMouseLeftButtonUp += (sender, e) =>
            {
                timer.Interval = 500;
                timer.Stop();
            };
        }

        private void Txt1_KeyDown(object sender, KeyEventArgs e)
        {
            int.TryParse(currentTextBox.Text, out int numResult);

            if ((int)e.Key >= 34 && (int)e.Key <= 43)
            {
                if (currentTextBox.Text.Length == 1)
                {
                    int.TryParse(currentTextBox.Text + ((int)e.Key - 34).ToString(), out int preNumResult);
                    if (currentTextBox.Name == "PART_TXTHOUR")
                    {
                        if (preNumResult >= 24)
                        {
                            return;
                        }
                    }
                    else if (currentTextBox.Name == "PART_TXTMINUTE")
                    {
                        if (preNumResult >= 60)
                        {
                            return;
                        }
                    }
                    else if (currentTextBox.Name == "PART_TXTSECOND")
                    {
                        if (preNumResult >= 60)
                        {
                            return;
                        }
                    }

                    currentTextBox.Text += ((int)e.Key - 34).ToString();
                }
                else
                {
                    currentTextBox.Text = ((int)e.Key - 34).ToString();
                }
            }

            if ((int)e.Key >= 74 && (int)e.Key <= 83)
            {
                if (currentTextBox.Text.Length == 1)
                {
                    int.TryParse(currentTextBox.Text + ((int)e.Key - 74).ToString(), out int preNumResult);
                    if (currentTextBox.Name == "PART_TXTHOUR")
                    {
                        if (preNumResult >= 24)
                        {
                            return;
                        }
                    }
                    else if (currentTextBox.Name == "PART_TXTMINUTE")
                    {
                        if (preNumResult >= 60)
                        {
                            return;
                        }
                    }
                    else if (currentTextBox.Name == "PART_TXTSECOND")
                    {
                        if (preNumResult >= 60)
                        {
                            return;
                        }
                    }
                    currentTextBox.Text += ((int)e.Key - 74).ToString();
                }
                else
                {
                    currentTextBox.Text = ((int)e.Key - 74).ToString();
                }
            }
        }

        public int Hour
        {
            get { return (int)GetValue(HourProperty); }
            set { SetValue(HourProperty, value); }
        }

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

        public int Minute
        {
            get { return (int)GetValue(MinuteProperty); }
            set { SetValue(MinuteProperty, value); }
        }

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

        public int Second
        {
            get { return (int)GetValue(SecondProperty); }
            set { SetValue(SecondProperty, value); }
        }

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

        public Visibility NumIncreaseVisible
        {
            get { return (Visibility)GetValue(NumIncreaseVisibleProperty); }
            set { SetValue(NumIncreaseVisibleProperty, value); }
        }

        // Using a DependencyProperty as the backing store for NumIncreaseVisible.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty NumIncreaseVisibleProperty =
            DependencyProperty.Register("NumIncreaseVisible", typeof(Visibility), typeof(TimePicker), new PropertyMetadata(Visibility.Collapsed));
    }
}

样式文件

StyleTimePicker.xaml

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<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:ZView">

    <Style TargetType="{x:Type local:TimePicker}">
        <Setter Property="BorderThickness" Value="1" />
        <Setter Property="BorderBrush" Value="#ececec" />
        <Setter Property="Hour" Value="00" />
        <Setter Property="Minute" Value="00" />
        <Setter Property="Second" Value="00" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type local:TimePicker}">
                    <Border
                        Background="{TemplateBinding Background}"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}">
                        <Grid Margin="0,0">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="18" />
                                <ColumnDefinition Width="auto" />
                                <ColumnDefinition Width="18" />
                                <ColumnDefinition Width="auto" />
                                <ColumnDefinition Width="18" />
                                <ColumnDefinition Width="*" />
                            </Grid.ColumnDefinitions>
                            <TextBox
                                x:Name="PART_TXTHOUR"
                                VerticalAlignment="Center"
                                HorizontalContentAlignment="Center"
                                AutoWordSelection="False"
                                BorderThickness="0"
                                Cursor="Arrow"
                                Focusable="True"
                                Foreground="Black"
                                IsReadOnly="True"
                                IsReadOnlyCaretVisible="False"
                                SelectionBrush="White"
                                Text="{Binding Hour, RelativeSource={RelativeSource TemplatedParent}, StringFormat={}{0:00}, UpdateSourceTrigger=PropertyChanged}" />
                            <TextBlock
                                Grid.Column="1"
                                VerticalAlignment="Center"
                                Text=":" />
                            <TextBox
                                x:Name="PART_TXTMINUTE"
                                Grid.Column="2"
                                VerticalAlignment="Center"
                                HorizontalContentAlignment="Center"
                                AutoWordSelection="False"
                                BorderThickness="0"
                                Cursor="Arrow"
                                Focusable="True"
                                Foreground="Black"
                                IsReadOnly="True"
                                IsReadOnlyCaretVisible="False"
                                Text="{Binding Minute, RelativeSource={RelativeSource TemplatedParent}, StringFormat={}{0:00}, UpdateSourceTrigger=PropertyChanged}" />
                            <TextBlock
                                Grid.Column="3"
                                VerticalAlignment="Center"
                                Text=":" />
                            <TextBox
                                x:Name="PART_TXTSECOND"
                                Grid.Column="4"
                                VerticalAlignment="Center"
                                HorizontalContentAlignment="Center"
                                AutoWordSelection="False"
                                BorderThickness="0"
                                Cursor="Arrow"
                                Focusable="True"
                                Foreground="Black"
                                IsReadOnly="True"
                                IsReadOnlyCaretVisible="False"
                                Text="{Binding Second, RelativeSource={RelativeSource TemplatedParent}, StringFormat={}{0:00}, UpdateSourceTrigger=PropertyChanged}" />
                            <TextBox
                                x:Name="PART_TXT4"
                                Grid.Column="5"
                                AutoWordSelection="False"
                                Background="Transparent"
                                BorderThickness="0"
                                Cursor="Arrow"
                                IsReadOnly="True"
                                IsReadOnlyCaretVisible="False" />

                            <Grid
                                x:Name="numIncrease"
                                Grid.Column="5"
                                HorizontalAlignment="Right"
                                Visibility="{TemplateBinding NumIncreaseVisible}">
                                <Grid.RowDefinitions>
                                    <RowDefinition />
                                    <RowDefinition />
                                </Grid.RowDefinitions>
                                <Button
                                    x:Name="PART_UP"
                                    Width="17"
                                    Height="11"
                                    VerticalAlignment="Bottom"
                                    Focusable="False">

                                    <Image Source="pack://application:,,,/Images/TimeEditer/arrowTop.png" />
                                </Button>
                                <Button
                                    x:Name="PART_DOWN"
                                    Grid.Row="1"
                                    Width="17"
                                    Height="11"
                                    VerticalAlignment="Top"
                                    Focusable="False">
                                    <Image Source="pack://application:,,,/Images/TimeEditer/arrowBottom.png" />
                                </Button>
                            </Grid>
                        </Grid>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>