问题描述
我想将特定日期的学校课程、考试等动态添加到我的日历中(例如:右键单击日期以添加课程/考试或选择日期并具有添加事件按钮)。几天来尝试了很多方法,但没有成功。 这些是我的 C# 代码:
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
using XamForms.Controls;
namespace ManageUni.Views.Navigation
{
[XamlCompilation(XamlCompilationoptions.Compile)]
public partial class TiMetableView : ContentPage
{
public TiMetableView()
{
XamForms.Controls.Calendar calendar1 = new XamForms.Controls.Calendar
{
BorderColor = Color.Gray,BorderWidth = 3,BackgroundColor = Color.Gray,StartDay = DayOfWeek.Sunday,StartDate = DateTime.Now
};
InitializeComponent();
}
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:controls="clr-namespace:XamForms.Controls;assembly=XamForms.Controls.Calendar"
x:Class="ManageUni.Views.Navigation.TiMetableView">
<ContentPage.Content>
<StackLayout>
<Label Text="Órarend"
VerticalOptions="CenterandExpand"
HorizontalOptions="CenterandExpand" />
<controls:Calendar Padding="10,10,0"
SelectedBorderWidth="4"
disabledBorderColor="Black"
ShowNumberOfWeek="false"
StartDay="Monday"
TitleLabelTextColor="Purple"
TitleLeftArrowTextColor="Blue"
SelectedDate="{Binding Date}"
SpecialDates="{Binding Attendances}"
DateCommand="{Binding DateChosen}"/>
</StackLayout>
</ContentPage.Content>
</ContentPage>
解决方法
您可以使用 DateClicked
事件来模拟添加事件。然后显示提示以获取要输入的事件。之后将事件添加到特殊数据中。最后一件事是刷新。
XML:
<Grid Margin="16,44,16,16">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Label
HorizontalOptions="CenterAndExpand"
Text="Órarend"
VerticalOptions="CenterAndExpand" />
<controls:Calendar
x:Name="calendar"
Grid.Row="1"
Padding="10,10,0"
DateClicked="Calendar_DateClicked"
DateCommand="{Binding DateChosen}"
DisabledBorderColor="Black"
SelectedBorderWidth="4"
SelectedDate="{Binding Date}"
ShowNumberOfWeek="false"
SpecialDates="{Binding Attendances}"
StartDay="Monday"
TitleLabelTextColor="Purple"
TitleLeftArrowTextColor="Blue" />
</Grid>
背后的代码:
async void Calendar_DateClicked(object sender,XamForms.Controls.DateTimeEventArgs e)
{
string result = await DisplayPromptAsync("SpecialEvent","Create a new Event:");
if (result == null)
{
return;
}
var specialDates = calendar.SpecialDates;
SpecialDate newDate = new SpecialDate(e.DateTime)
{
Selectable = true,BackgroundPattern = new BackgroundPattern(1)
{
Pattern = new List<Pattern>
{
new Pattern { WidthPercent = 1f,HightPercent = 0.6f,Color = Color.Transparent },new Pattern{ WidthPercent = 1f,HightPercent = 0.4f,Color = Color.Transparent,Text = result,TextColor=Color.Black,TextSize=11,TextAlign=TextAlign.Middle},}
}
};
specialDates.Add(newDate);
calendar.SpecialDates = specialDates;
calendar.ForceRedraw();
}
您可以从 GitHub 获得的模型和视图模型。 https://github.com/lubiepomaranczki/XamForms.Controls.Calendar