Net Maui - How to chenge padding value of DatePicker control - Stack Overflow

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I need to remove or change the padding value of the DatePicker control. I understand that I need to use handlers, as I have successfully done for the Entry control. However, while it works perfectly for the Entry control, it doesn't work at all for the DatePicker control.

I used this code:

        Microsoft.Maui.Handlers.DatePickerHandler.Mapper.AppendToMapping("DatePickerCustom", (handler, view) =>
        {
            if (view is DatePicker)
            {

                #if ANDROID
                     //handler.PlatformView.SetSelectAllOnFocus(true);
                #elif WINDOWS
                     handler.PlatformView.Padding=new Microsoft.UI.Xaml.Thickness(3,2,3,2);
                #endif

            }
        });

Thanks

I need to remove or change the padding value of the DatePicker control. I understand that I need to use handlers, as I have successfully done for the Entry control. However, while it works perfectly for the Entry control, it doesn't work at all for the DatePicker control.

I used this code:

        Microsoft.Maui.Handlers.DatePickerHandler.Mapper.AppendToMapping("DatePickerCustom", (handler, view) =>
        {
            if (view is DatePicker)
            {

                #if ANDROID
                     //handler.PlatformView.SetSelectAllOnFocus(true);
                #elif WINDOWS
                     handler.PlatformView.Padding=new Microsoft.UI.Xaml.Thickness(3,2,3,2);
                #endif

            }
        });

Thanks

• maui-windows

Share Improve this question Follow asked Feb 24 at 7:26 KrakenKraken 1211212 bronze badges 2

• Hi, only for left and right padding and not for top and bottom – Kraken Commented Feb 25 at 16:38
• Please see my updated answer. – Leon Lu Commented Feb 26 at 6:18

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2 Answers 2

Sorted by: Reset to default 1

If you set the background color of the main grid, you will notice it.

Yes, you can set MaxHeight="20" for your <Grid x:Name="Root" MaxHeight="20">, the top and bottom padding will be decrease. And it will works if you set the background color

<maui:MauiWinUIApplication
    x:Class="MauiApp1.WinUI.App"
    xmlns="http://schemas.microsoft/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft/winfx/2006/xaml"
    xmlns:maui="using:Microsoft.Maui"
    xmlns:local="using:MauiApp1.WinUI">
 
    <maui:MauiWinUIApplication.Resources>    

 <!-- Default style for CalendarDatePicker -->
    <Style TargetType="CalendarDatePicker">
        <Setter Property="Foreground" Value="{ThemeResource CalendarDatePickerForeground}" />
        <Setter Property="Background" Value="{ThemeResource CalendarDatePickerBackground}" />
        <Setter Property="BorderBrush" Value="{ThemeResource CalendarDatePickerBorderBrush}" />
        <Setter Property="BorderThickness" Value="{ThemeResource CalendarDatePickerBorderThemeThickness}" />
        <Setter Property="HorizontalAlignment" Value="Left" />
        <Setter Property="VerticalAlignment" Value="Center" />
        <Setter Property="UseSystemFocusVisuals" Value="{ThemeResource IsApplicationFocusVisualKindReveal}" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="CalendarDatePicker">
                    <Grid x:Name="Root" MaxHeight="20">
 
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="CommonStates">
                                <VisualState x:Name="Normal" />
 
                                <VisualState x:Name="PointerOver">
 
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Background" Storyboard.TargetProperty="BorderBrush">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CalendarDatePickerBorderBrushPointerOver}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Background" Storyboard.TargetProperty="Background">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CalendarDatePickerBackgroundPointerOver}" />
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
 
                                <VisualState x:Name="Pressed">
 
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Background" Storyboard.TargetProperty="Background">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CalendarDatePickerBackgroundPressed}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Background" Storyboard.TargetProperty="BorderBrush">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CalendarDatePickerBorderBrushPressed}" />
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
 
                                <VisualState x:Name="Disabled">
 
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Background" Storyboard.TargetProperty="Background">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CalendarDatePickerBackgroundDisabled}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Background" Storyboard.TargetProperty="BorderBrush">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CalendarDatePickerBorderBrushDisabled}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="HeaderContentPresenter" Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CalendarDatePickerHeaderForegroundDisabled}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="DateText" Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CalendarDatePickerTextForegroundDisabled}" />
                                        </ObjectAnimationUsingKeyFrames>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="CalendarGlyph" Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CalendarDatePickerCalendarGlyphForegroundDisabled}" />
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
 
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="FocusStates">
                                <VisualState x:Name="Unfocused" />
                                <VisualState x:Name="PointerFocused" />
                                <VisualState x:Name="Focused">
 
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Background" Storyboard.TargetProperty="Background">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CalendarDatePickerBackgroundFocused}" />
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
 
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="SelectionStates">
                                <VisualState x:Name="Unselected" />
 
                                <VisualState x:Name="Selected">
 
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="DateText" Storyboard.TargetProperty="Foreground">
                                            <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource CalendarDatePickerTextForegroundSelected}" />
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
 
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="HeaderStates">
                                <VisualState x:Name="TopHeader" />
                                <VisualState x:Name="LeftHeader">
                                    <VisualState.Setters>
                                        <Setter Target="HeaderContentPresenter.(Grid.Row)" Value="1" />
                                        <Setter Target="HeaderContentPresenter.(Grid.Column)" Value="0" />
                                        <Setter Target="HeaderContentPresenter.(Grid.ColumnSpan)" Value="1" />
                                        <Setter Target="HeaderContentPresenter.Margin" Value="{StaticResource CalendarDatePickerLeftHeaderMargin}" />
                                        <Setter Target="HeaderContentPresenter.MaxWidth" Value="{StaticResource CalendarDatePickerLeftHeaderMaxWidth}" />
                                    </VisualState.Setters>
                                </VisualState>
 
                            </VisualStateGroup>
 
                        </VisualStateManager.VisualStateGroups>
                        <FlyoutBase.AttachedFlyout>
                            <Flyout Placement="Bottom" ShouldConstrainToRootBounds="False">
                                <Flyout.FlyoutPresenterStyle>
                                    <Style TargetType="FlyoutPresenter">
                                        <Setter Property="Padding" Value="0" />
                                        <Setter Property="BorderThickness" Value="0" />
                                        <Setter Property="IsDefaultShadowEnabled" Value="True" />
                                        <Setter Property="Template">
                                            <Setter.Value>
                                                <ControlTemplate TargetType="FlyoutPresenter">
                                                    <ContentPresenter Background="{TemplateBinding Background}"
                                    BorderBrush="{TemplateBinding BorderBrush}"
                                    BorderThickness="{TemplateBinding BorderThickness}"
                                    Content="{TemplateBinding Content}"
                                    ContentTemplate="{TemplateBinding ContentTemplate}"
                                    ContentTransitions="{TemplateBinding ContentTransitions}"
                                    Margin="{TemplateBinding Padding}"
                                    HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                    VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
                                                </ControlTemplate>
                                            </Setter.Value>
                                        </Setter>
                                    </Style>
                                </Flyout.FlyoutPresenterStyle>
                                <CalendarView x:Name="CalendarView"
                    Style="{TemplateBinding CalendarViewStyle}"
                    MinDate="{TemplateBinding MinDate}"
                    MaxDate="{TemplateBinding MaxDate}"
                    IsTodayHighlighted="{TemplateBinding IsTodayHighlighted}"
                    DisplayMode="{TemplateBinding DisplayMode}"
                    FirstDayOfWeek="{TemplateBinding FirstDayOfWeek}"
                    DayOfWeekFormat="{TemplateBinding DayOfWeekFormat}"
                    CalendarIdentifier="{TemplateBinding CalendarIdentifier}"
                    IsOutOfScopeEnabled="{TemplateBinding IsOutOfScopeEnabled}"
                    IsGroupLabelVisible="{TemplateBinding IsGroupLabelVisible}" />
                            </Flyout>
                        </FlyoutBase.AttachedFlyout>
 
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto" />
                            <RowDefinition Height="*" />
                            <RowDefinition Height="Auto" />
                        </Grid.RowDefinitions>
 <!--change the height of ColumnDefinition, I change it from 32 to 22-->

                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="Auto" />
                            <ColumnDefinition Width="*" />
                            <ColumnDefinition Width="22" />
                        </Grid.ColumnDefinitions>
                        <ContentPresenter x:Name="HeaderContentPresenter"
                x:DeferLoadStrategy="Lazy"
                Grid.Row="0"
                Grid.Column="1"
                Grid.ColumnSpan="2"
                Content="{TemplateBinding Header}"
                ContentTemplate="{TemplateBinding HeaderTemplate}"
                Margin="{StaticResource CalendarDatePickerTopHeaderMargin}"
                TextWrapping="Wrap"
                VerticalAlignment="Top"
                Visibility="Collapsed" />
                        <Border x:Name="Background"
                Grid.Row="1"
                Grid.Column="1"
                Grid.ColumnSpan="2"
                BorderThickness="{TemplateBinding BorderThickness}"
                BorderBrush="{TemplateBinding BorderBrush}"
                Background="{TemplateBinding Background}"
                CornerRadius="{TemplateBinding CornerRadius}"
                Control.IsTemplateFocusTarget="True"
                MinHeight="32"/>
    <!--change the padding of TextBlock, I change the padding from Padding="12, 0, 0, 2" to  Padding="3, 0, 0, 2"-->
                        <TextBlock x:Name="DateText"
                Grid.Row="1"
                Grid.Column="1"
                HorizontalAlignment="Left"
                Foreground="{ThemeResource CalendarDatePickerTextForeground}"
                Text="{TemplateBinding PlaceholderText}"
                Padding="3, 0, 0, 2"
                VerticalAlignment="Center" />
                        <FontIcon x:Name="CalendarGlyph"
                Grid.Row="1"
                Grid.Column="2"
                Glyph="&#xE787;"
                FontFamily="{ThemeResource SymbolThemeFontFamily}"
                Foreground="{ThemeResource CalendarDatePickerCalendarGlyphForeground}"
                FontSize="12"
                HorizontalAlignment="Center"
                VerticalAlignment="Center" />
                        <ContentPresenter x:Name="DescriptionPresenter"
                Grid.Row="2"
                Grid.Column="1"
                Grid.ColumnSpan="2"
                Content="{TemplateBinding Description}"
                x:Load="False"
                Foreground="{ThemeResource SystemControlDescriptionTextForegroundBrush}"
                AutomationProperties.AccessibilityView="Raw" />
 
                    </Grid>
 
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    </maui:MauiWinUIApplication.Resources>
</maui:MauiWinUIApplication>

If you want to change the padding of datapicker for Windows platform, Please open the generic.xaml, then find the Default style for CalendarDatePicker.

Copy the style to the App.xaml in the /Platforms/Windows folder.

We can find the datepicker combine with <Grid> that include the <ContentPresenter>, <Border> <TextBlock> <FontIcon>, if you want to adjust the padding, we can change the padding of <TextBlock> and the Column width at<ColumnDefinition Width="32" />

Did you know you can use StackLayout to crop controls?

 <!--  without cropping  -->
 <Border Padding="2" HorizontalOptions="Start">
     <DatePicker />
 </Border>

 <!--  with cropping  -->
 <Border Padding="2" HorizontalOptions="Start">
     <StackLayout HeightRequest="25" HorizontalOptions="Start" WidthRequest="100">
         <DatePicker HorizontalOptions="Start" TranslationX="-10" TranslationY="-10" VerticalOptions="Start" WidthRequest="120" />
     </StackLayout>
 </Border>

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