UI customization of the WinUI Calendar (SfCalendar)

25 May 202221 minutes to read

This section describes about the various customization options available in the Calendar control.

Hide days that are out of scope

You can hide the days that are out of scope of the current view by setting the OutOfScopeVisibility property value as Hidden. The default value of OutOfScopeVisibility property is Enabled.

<calendar:SfCalendar x:Name="sfCalendar"
                     OutOfScopeVisibility="Hidden" 
                     />
SfCalendar sfCalendar = new SfCalendar();
sfCalendar.OutOfScopeVisibility = OutOfScopeVisibility.Hidden;

hide-leading-trailing-days-in-winui-calendar

NOTE

Download demo application from GitHub.

Custom UI for specific cell in calendar

You can change the UI of specific cells in Calendar by using the CalendarItem.ContentTemplate property. The DataContext of CalendarItem.ContentTemplate is Calendar.

public class EventDataConverter : IValueConverter
{
    Dictionary<DateTimeOffset, string> SpecialDates;
    public EventDataConverter()
    {
        SpecialDates = new Dictionary<DateTimeOffset, string>();
        SpecialDates.Add(DateTimeOffset.Now.AddMonths(-1).AddDays(1), "SingleEvent_1");
        SpecialDates.Add(DateTimeOffset.Now.AddMonths(-1).AddDays(5), "DoubleEvent_1");
        SpecialDates.Add(DateTimeOffset.Now.AddMonths(-1).AddDays(-2), "TripleEvent_2");
        SpecialDates.Add(DateTimeOffset.Now.AddDays(1), "TripleEvent_1");
        SpecialDates.Add(DateTimeOffset.Now.AddDays(5), "SingleEvent_2");
        SpecialDates.Add(DateTimeOffset.Now.AddDays(7), "DoubleEvent_2");
        SpecialDates.Add(DateTimeOffset.Now.AddDays(9), "SingleEvent_1");
        SpecialDates.Add(DateTimeOffset.Now.AddDays(12), "TripleEvent_2");
        SpecialDates.Add(DateTimeOffset.Now.AddDays(-4), "DoubleEvent_1");
        SpecialDates.Add(DateTimeOffset.Now.AddMonths(1).AddDays(1), "DoubleEvent_3");
        SpecialDates.Add(DateTimeOffset.Now.AddMonths(1).AddDays(3), "SingleEvent_2");
        SpecialDates.Add(DateTimeOffset.Now.AddMonths(1).AddDays(-5), "DoubleEvent_2");
    }
    public object Convert(object value, Type targetType, object parameter, string language)
    {
        DateTimeOffset dateTimeOffset = SpecialDates.Keys.FirstOrDefault(x => x.Date == (DateTime)value);

        if (dateTimeOffset != DateTimeOffset.MinValue)
        {
            string template = SpecialDates[dateTimeOffset];
            StackPanel stackPanel;
            switch (template)
            {
                case "SingleEvent_1":
                    return new List<Brush>() { new SolidColorBrush(Colors.DeepPink) };
                case "SingleEvent_2":
                    return new List<Brush>() { new SolidColorBrush(Colors.Cyan) };
                case "DoubleEvent_1":
                    return new List<Brush>() { new SolidColorBrush(Colors.Violet), new SolidColorBrush(Colors.Orange) };
                case "DoubleEvent_2":
                    return new List<Brush>() { new SolidColorBrush(Colors.Gold), new SolidColorBrush(Colors.Green) };
                case "DoubleEvent_3":
                    return new List<Brush>() { new SolidColorBrush(Colors.Brown), new SolidColorBrush(Colors.Blue) };
                case "TripleEvent_1":
                    return new List<Brush>() { new SolidColorBrush(Colors.Green), new SolidColorBrush(Colors.DeepSkyBlue), new SolidColorBrush(Colors.Orange) };
                case "TripleEvent_2":
                    return new List<Brush>() { new SolidColorBrush(Colors.Red), new SolidColorBrush(Colors.Green), new SolidColorBrush(Colors.Gold) };
            }
        }
        return null;
    }

    public object ConvertBack(object value, Type targetType, object parameter, string language)
    {
        return null;
    }
}
<Grid>
<Grid.Resources>
    <local:EventDataConverter x:Key="EventDataConverterKey" />
    <DataTemplate x:Key="customTemplate">
        <ItemsControl ItemsSource="{Binding Path=Date, Converter={StaticResource EventDataConverterKey}}">
            <ItemsControl.ItemTemplate>
                <DataTemplate >
                    <Ellipse MinHeight="4" MinWidth="4" Margin="2" Fill="{Binding}"/>
                </DataTemplate>
            </ItemsControl.ItemTemplate>
            <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                    <StackPanel Orientation="Horizontal"/>
                </ItemsPanelTemplate>
            </ItemsControl.ItemsPanel>
        </ItemsControl>
    </DataTemplate>
</Grid.Resources>
    <calendar:SfCalendar
                        CornerRadius="14"
                        DayOfWeekFormat="{}{dayofweek.abbreviated(3)}">
        <calendar:SfCalendar.Resources>
            <ResourceDictionary>
                <!--  Resources and color keys for Calendar Control  -->
                <SolidColorBrush x:Key="SyncfusionCalendarItemOutOfScopeForeground"
                                                 Color="SlateGray" Opacity="0.5" />
                <SolidColorBrush x:Key="SyncfusionCalendarWeekItemForeground"
                                                 Color="{ThemeResource SystemBaseMediumLowColor}" />
                <x:Double x:Key="SyncfusionSubtitleAltFontSize">16</x:Double>
                <Thickness x:Key="SyncfusionCalendarItemMargin">1</Thickness>
                <x:Double x:Key="SyncfusionBodyFontSize">13</x:Double>

                <Style TargetType="calendar:CalendarItem">
                    <Setter Property="CornerRadius" Value="14"/>
                    <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
                    <Setter Property="VerticalContentAlignment" Value="Stretch"/>
                    <Setter Property="ContentTemplate">
                        <Setter.Value>
                            <DataTemplate>
                                <Grid MinWidth="40" MinHeight="40">
                                    <ContentControl
                                                        HorizontalAlignment="Center"
                                                        VerticalAlignment="Center"
                                                        Margin="2"
                                                        Content="{Binding DisplayText}"/>
                                    <ContentControl
                                                        Margin="3"
                                                        HorizontalAlignment="Center"
                                                        VerticalAlignment="Bottom"
                                                        Content="{Binding Date}"
                                                        ContentTemplate="{StaticResource customTemplate}"
                                                       />
                                </Grid>
                            </DataTemplate>
                        </Setter.Value>
                    </Setter>
                </Style>
            </ResourceDictionary>
        </calendar:SfCalendar.Resources>
    </calendar:SfCalendar>
</Grid>

ui-customation-for-specific-cell-in-winui-calendar

NOTE

Download demo application from GitHub.

Customize using theme keys

You can customize the colors of day names and headers of month, year, decade and century by changing the theme keys values in a ResourceDictionary used in the Calendar control.

Name of the key Description
SyncfusionCalendarNavigationButtonForeground Key to change the color of calendar navigation button foreground color.
SyncfusionCalendarWeekItemForeground Key to change the color of calendar week days name foreground color.
SyncfusionCalendarTodayItemForeground Key to change the color of calendar today date foreground color.
SyncfusionCalendarItemBackground Key to change the color of calendar date cells background color except today date cell.
SyncfusionCalendarItemBorderBrush Key to change the color of calendar date cells border brush.
SyncfusionCalendarTodayItemBackground Key to change the color of calendar today date cell background color
SyncfusionCalendarTodayItemBorderBrush Key to change the color of calendar today date cell border brush.
SyncfusionCalendarItemOutOfScopeForeground Key to change the color of calendar date cells foreground color which are out of scope.
SyncfusionCalendarItemMargin Key to change the margin of calendar item.
SyncfusionSubtitleAltFontSize Key to change the font size of calendar header region.
SyncfusionBodyFontSize Key to change the font size of calendar items region.
<calendar:SfCalendar CornerRadius="6">
     <calendar:SfCalendar.Resources>
        <ResourceDictionary>
                    <!--Theme Key customization-->
            <SolidColorBrush x:Key="SyncfusionCalendarNavigationButtonForeground"
                                         Color="#FF248D92" />
            <SolidColorBrush x:Key="SyncfusionCalendarWeekItemForeground"
                                         Color="#FF248D92" />
            <SolidColorBrush x:Key="SyncfusionCalendarTodayItemForeground"
                                         Color="{ThemeResource SystemBaseHighColor}" />
            <SolidColorBrush x:Key="SyncfusionCalendarItemBackground"
                                         Color="{ThemeResource SystemChromeMediumLowColor}" />
            <SolidColorBrush x:Key="SyncfusionCalendarItemBorderBrush"
                                         Color="{ThemeResource SystemChromeMediumLowColor}"/>
            <SolidColorBrush x:Key="SyncfusionCalendarTodayItemBackground"
                                         Color="#FF9BC5ED" />
            <SolidColorBrush x:Key="SyncfusionCalendarTodayItemBorderBrush"
                                         Color="#FF9BC5ED" />
            <SolidColorBrush x:Key="SyncfusionCalendarItemOutOfScopeForeground"
                                         Color="SlateGray" Opacity="0.5" />
            <Thickness x:Key="SyncfusionCalendarItemMargin">1</Thickness>
            <x:Double x:Key="SyncfusionSubtitleAltFontSize">16</x:Double>
            <x:Double x:Key="SyncfusionBodyFontSize">13</x:Double>
            <FontFamily x:Key="SyncfusionControlThemeFontFamily">SimSun</FontFamily>
            <Style TargetType="calendar:CalendarItem">
                <Setter Property="CornerRadius" Value="5"/>
                <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
                <Setter Property="VerticalContentAlignment" Value="Stretch"/>
                <Setter Property="ContentTemplate">
                    <Setter.Value>
                        <DataTemplate>
                            <Grid MinWidth="40" MinHeight="40">
                                <ContentControl
                                                HorizontalAlignment="Center"
                                                VerticalAlignment="Center"
                                                Margin="3"
                                                Content="{Binding DisplayText}"/>
                            </Grid>
                        </DataTemplate>
                    </Setter.Value>
                </Setter>
            </Style>
        </ResourceDictionary>
    </calendar:SfCalendar.Resources>
</calendar:SfCalendar>

customize-ui-using-theme-keys-in-winui-calendar

NOTE

Download demo from GitHub.