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| 1 | +--- |
| 2 | +title: Style the Range Selector for Calendar in .NET MAUI |
| 3 | +description: Learn how to style the range selector for the Calendar component in .NET MAUI for the first, middle, and last selected dates. |
| 4 | +type: how-to |
| 5 | +page_title: Styling Calendar Range Selection in .NET MAUI |
| 6 | +slug: custom-range-selector-calendar-dotnet-maui |
| 7 | +tags: calendar, .net maui, range selection, styling, templates |
| 8 | +res_type: kb |
| 9 | +--- |
| 10 | + |
| 11 | +## Environment |
| 12 | + |
| 13 | +| Version | Product | Author | |
| 14 | +| --- | --- | ---- | |
| 15 | +| 11.0.0 | Telerik UI for .NET MAUI Calendar | [Dobrinka Yordanova](https://www.telerik.com/blogs/author/dobrinka-yordanova) | |
| 16 | + |
| 17 | +## Description |
| 18 | + |
| 19 | +I want to create a custom range selector for the [Calendar](https://docs.telerik.com/devtools/maui/controls/calendar/overview) component in .NET MAUI with specific visual styling for the selected dates. The first and last selected dates should have semi-circular styles, while the middle dates should appear as rectangular blocks or connected backgrounds. |
| 20 | + |
| 21 | +This knowledge base article also answers the following questions: |
| 22 | +- How to style range selection in .NET MAUI Calendar? |
| 23 | +- How to apply templates for selected dates in .NET MAUI Calendar? |
| 24 | +- How to customize date styles in .NET MAUI Calendar? |
| 25 | + |
| 26 | +## Solution |
| 27 | + |
| 28 | +To achieve the desired styling for the Calendar component, define custom styles and use a `CalendarStyleSelector`. Follow the steps below: |
| 29 | + |
| 30 | +**1.** Define custom styles in the XAML file for the first, middle, and last selected dates using the `CalendarBorderLabel` properties. |
| 31 | + |
| 32 | +```xml |
| 33 | + <ContentPage.Resources> |
| 34 | + <ResourceDictionary> |
| 35 | + <local:CustomCalendarStyleSelector x:Key="DayStyleSelector"> |
| 36 | + <local:CustomCalendarStyleSelector.CustomSelectedFirstStyle> |
| 37 | + <Style TargetType="telerik:CalendarBorderLabel"> |
| 38 | + <Setter Property="TextColor" Value="#04A2AA" /> |
| 39 | + <Setter Property="FontAttributes" Value="Italic" /> |
| 40 | + <Setter Property="BorderThickness" Value="0" /> |
| 41 | + <Setter Property="BorderBackgroundColor" Value="#9AD9DD" /> |
| 42 | + </Style> |
| 43 | + </local:CustomCalendarStyleSelector.CustomSelectedFirstStyle> |
| 44 | + <local:CustomCalendarStyleSelector.CustomSelectedMiddleStyle> |
| 45 | + <Style TargetType="telerik:CalendarBorderLabel"> |
| 46 | + <Setter Property="BorderThickness" Value="0" /> |
| 47 | + <Setter Property="BorderBackgroundColor" Value="LightCoral" /> |
| 48 | + </Style> |
| 49 | + </local:CustomCalendarStyleSelector.CustomSelectedMiddleStyle> |
| 50 | + <local:CustomCalendarStyleSelector.CustomSelectedLastStyle> |
| 51 | + <Style TargetType="telerik:CalendarBorderLabel"> |
| 52 | + <Setter Property="TextColor" Value="White" /> |
| 53 | + <Setter Property="HorizontalTextAlignment" Value="Center" /> |
| 54 | + <Setter Property="BorderBackgroundColor" Value="Red" /> |
| 55 | + <Setter Property="BorderThickness" Value="0" /> |
| 56 | + </Style> |
| 57 | + </local:CustomCalendarStyleSelector.CustomSelectedLastStyle> |
| 58 | + </local:CustomCalendarStyleSelector> |
| 59 | + </ResourceDictionary> |
| 60 | + </ContentPage.Resources> |
| 61 | +``` |
| 62 | + |
| 63 | +**2.** Link the styles to the Calendar in the XAML file: |
| 64 | + |
| 65 | +```xml |
| 66 | + <telerik:RadCalendar x:Name="calendar" |
| 67 | + SelectionMode="Range" |
| 68 | + DisplayMode="Month" |
| 69 | + DayStyleSelector="{StaticResource DayStyleSelector}" /> |
| 70 | +``` |
| 71 | + |
| 72 | +**3.** Implement the `CustomCalendarStyleSelector` class in the code-behind file to apply the styles based on the selection state. |
| 73 | + |
| 74 | +```csharp |
| 75 | + public class CustomCalendarStyleSelector : CalendarStyleSelector |
| 76 | + { |
| 77 | + private Style customSelectedFirstStyle; |
| 78 | + private Style customSelectedMiddleStyle; |
| 79 | + private Style customSelectedLastStyle; |
| 80 | + |
| 81 | + public override Style SelectStyle(object item, BindableObject container) |
| 82 | + { |
| 83 | + var node = (CalendarNode)item; |
| 84 | + var calendar = (RadCalendar)node.Calendar; |
| 85 | + if (node.IsSelected && node.SelectionState == CalendarNodeSelectionState.First) |
| 86 | + { |
| 87 | + return this.CustomSelectedFirstStyle; |
| 88 | + } |
| 89 | + if (node.IsSelected && node.SelectionState == CalendarNodeSelectionState.Middle) |
| 90 | + { |
| 91 | + return this.CustomSelectedMiddleStyle; |
| 92 | + } |
| 93 | + if (node.IsSelected && node.SelectionState == CalendarNodeSelectionState.Last) |
| 94 | + { |
| 95 | + return this.CustomSelectedLastStyle; |
| 96 | + } |
| 97 | + return base.SelectStyle(item, container); |
| 98 | + } |
| 99 | + |
| 100 | + public Style CustomSelectedFirstStyle |
| 101 | + { |
| 102 | + get => customSelectedFirstStyle; |
| 103 | + set |
| 104 | + { |
| 105 | + customSelectedFirstStyle = value; |
| 106 | + customSelectedFirstStyle.BasedOn = this.SelectedBorderStyle; |
| 107 | + } |
| 108 | + } |
| 109 | + |
| 110 | + public Style CustomSelectedMiddleStyle |
| 111 | + { |
| 112 | + get => customSelectedMiddleStyle; |
| 113 | + set |
| 114 | + { |
| 115 | + customSelectedMiddleStyle = value; |
| 116 | + customSelectedMiddleStyle.BasedOn = this.SelectedBorderStyle; |
| 117 | + } |
| 118 | + } |
| 119 | + |
| 120 | + public Style CustomSelectedLastStyle |
| 121 | + { |
| 122 | + get => customSelectedLastStyle; |
| 123 | + set |
| 124 | + { |
| 125 | + customSelectedLastStyle = value; |
| 126 | + customSelectedLastStyle.BasedOn = this.SelectedBorderStyle; |
| 127 | + } |
| 128 | + } |
| 129 | + } |
| 130 | +``` |
| 131 | + |
| 132 | +**4.** If you require more control over the borders or additional customization, use templates. Refer to the [Calendar Templates](https://docs.telerik.com/devtools/maui/controls/calendar/templates) documentation for more details. |
| 133 | + |
| 134 | +## See Also |
| 135 | + |
| 136 | +- [Calendar Overview](https://docs.telerik.com/devtools/maui/controls/calendar/overview) |
| 137 | +- [Calendar Templates](https://docs.telerik.com/devtools/maui/controls/calendar/templates) |
| 138 | +- [Calendar Selection](https://docs.telerik.com/devtools/maui/controls/calendar/selection) |
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