C# Avalonia 06 - Controls- DateControls

DateControls.axaml代码

<Window xmlns="https://github.com/avaloniaui"
        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"
        Height="426" Width="467"
        x:Class="AvaloniaUI.DateControls"
        Title="DateControls">
    <Grid Background="White" Margin="3" ColumnDefinitions="auto,auto" RowDefinitions="*,auto">
        <StackPanel>
            <Calendar Margin="3" SelectionMode="MultipleRange" SelectedDatesChanged="Calendar_SelectedDatesChanged" ></Calendar>
            <Calendar Margin="3" DisplayMode="Year" SelectedDatesChanged="Calendar_SelectedDatesChanged" ></Calendar>
        </StackPanel>

        <StackPanel Grid.Column="1">
            <DatePicker Margin="3"></DatePicker>
            <DatePicker Margin="3" DayFormat="ddd dd"></DatePicker>
        </StackPanel>

        <TextBlock Grid.Row="1" Grid.ColumnSpan="2" Name="lblError" Foreground="Red" TextWrapping="Wrap"></TextBlock>
    </Grid>
</Window>

DateControls.axaml.cs代码

using Avalonia;
using Avalonia.Controls;
using Avalonia.Markup.Xaml;
using System;

namespace AvaloniaUI;

public partial class DateControls : Window
{
    public DateControls()
    {
        InitializeComponent();
    }

    private void Calendar_SelectedDatesChanged(object? sender, SelectionChangedEventArgs e)
    {
        foreach (DateTime selectedDate in e.AddedItems)
        {
            if ((selectedDate.DayOfWeek == DayOfWeek.Saturday) ||
                (selectedDate.DayOfWeek == DayOfWeek.Sunday))
            {
                lblError.Text = "Weekends are not allowed";

                ((Calendar?)sender!).SelectedDates.Remove(selectedDate);
            }
            else
                lblError.Text = "";
        }
    }
}

运行效果