UI customization of the WinUI Calendar (SfCalendar)
22 Jul 202623 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 to Hidden. The default value of the OutOfScopeVisibility property is Enabled.
<Window
...
xmlns:calendar="using:Syncfusion.UI.Xaml.Calendar">
<calendar:SfCalendar x:Name="sfCalendar"
OutOfScopeVisibility="Hidden"
/>
</Window>using Syncfusion.UI.Xaml.Calendar;
SfCalendar sfCalendar = new SfCalendar();
sfCalendar.OutOfScopeVisibility = OutOfScopeVisibility.Hidden;

NOTE
Download demo application from GitHub.
Custom UI for specific cell in calendar
You can change the UI of specific cells in the Calendar by using the CalendarItem.ContentTemplate property. The DataContext of the CalendarItem.ContentTemplate is CalendarItemInfo.
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 == ((DateTimeOffset)value).Date);
if (dateTimeOffset != DateTimeOffset.MinValue)
{
string template = SpecialDates[dateTimeOffset];
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;
}
}<Window
...
xmlns:calendar="using:Syncfusion.UI.Xaml.Calendar">
<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>
</Window>
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 key values in a ResourceDictionary used in the Calendar control.
| Name of the key | Description |
|---|---|
| SyncfusionCalendarNavigationButtonForeground | Key to change the calendar navigation button foreground color. |
| SyncfusionCalendarWeekItemForeground | Key to change the calendar week days name foreground color. |
| SyncfusionCalendarTodayItemForeground | Key to change the calendar today date foreground color. |
| SyncfusionCalendarItemBackground | Key to change the calendar date cell background color except the today date cell. |
| SyncfusionCalendarItemBorderBrush | Key to change the calendar date cell border brush. |
| SyncfusionCalendarTodayItemBackground | Key to change the calendar today date cell background color. |
| SyncfusionCalendarTodayItemBorderBrush | Key to change the calendar today date cell border brush. |
| SyncfusionCalendarItemOutOfScopeForeground | Key to change the calendar date cell foreground color which is out of scope. |
| SyncfusionCalendarItemMargin | Key to change the margin of the calendar item. |
| SyncfusionSubtitleAltFontSize | Key to change the font size of the calendar header region. |
| SyncfusionBodyFontSize | Key to change the font size of the calendar items region. |
<Window
...
xmlns:calendar="using:Syncfusion.UI.Xaml.Calendar">
<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>
</Window>
NOTE
Download demo application from GitHub.