Class DateTimeSpinnerBase

Represents a SpinnerView control that has date and time fields as its columns.

Inheritance
System.Object
SpinnerView
DateTimeSpinnerBase
Implements
System.IDisposable
Inherited Members
Namespace: Syncfusion.UI.Xaml.Editors
Assembly: Syncfusion.Editors.WinUI.dll
Syntax
public class DateTimeSpinnerBase : SpinnerView, IDisposable
Examples

The below examples shows, how to initialize the DateTimeSpinnerBase control.

<syncfusion:DateTimeSpinnerBase />

Constructors

DateTimeSpinnerBase()

Initializes a new instance of the DateTimeSpinnerBase class.

Declaration
public DateTimeSpinnerBase()

Fields

BlackoutDatesProperty

Identifies BlackoutDates dependency property.

Declaration
public static readonly DependencyProperty BlackoutDatesProperty
Field Value
Type Description
Microsoft.UI.Xaml.DependencyProperty

The identifier for the BlackoutDates dependency property.

CalendarIdentifierProperty

Identifies CalendarIdentifier dependency property.

Declaration
public static readonly DependencyProperty CalendarIdentifierProperty
Field Value
Type
Microsoft.UI.Xaml.DependencyProperty

DisplayDateTimeFormatProperty

Identifies DisplayDateTimeFormat dependency property.

Declaration
public static readonly DependencyProperty DisplayDateTimeFormatProperty
Field Value
Type Description
Microsoft.UI.Xaml.DependencyProperty

The identifier for the DisplayDateTimeFormat dependency property.

ItemContainerStyleProperty

Identifies ItemContainerStyle dependency property.

Declaration
public static readonly DependencyProperty ItemContainerStyleProperty
Field Value
Type Description
Microsoft.UI.Xaml.DependencyProperty

The identifier for the ItemContainerStyle dependency property.

ItemTemplateProperty

Identifies ItemTemplate dependency property.

Declaration
public static readonly DependencyProperty ItemTemplateProperty
Field Value
Type Description
Microsoft.UI.Xaml.DependencyProperty

The identifier for the ItemTemplate dependency property.

ItemTemplateSelectorProperty

Identifies ItemTemplateSelector dependency property.

Declaration
public static readonly DependencyProperty ItemTemplateSelectorProperty
Field Value
Type Description
Microsoft.UI.Xaml.DependencyProperty

The identifier for the ItemTemplateSelector dependency property.

MaxDateTimeProperty

Identifies MaxDateTime dependency property.

Declaration
public static readonly DependencyProperty MaxDateTimeProperty
Field Value
Type Description
Microsoft.UI.Xaml.DependencyProperty

The identifier for the MaxDateTime dependency property.

MinDateTimeProperty

Identifies MinDateTime dependency property.

Declaration
public static readonly DependencyProperty MinDateTimeProperty
Field Value
Type Description
Microsoft.UI.Xaml.DependencyProperty

The identifier for the MinDateTime dependency property.

SelectedDateTimeProperty

Identifies SelectedDateTime dependency property.

Declaration
public static readonly DependencyProperty SelectedDateTimeProperty
Field Value
Type Description
Microsoft.UI.Xaml.DependencyProperty

The identifier for the SelectedDateTime dependency property.

Properties

BlackoutDates

Gets or sets the collection of restricted dates and times, that is not allowed to select.

Declaration
public DateTimeOffsetCollection BlackoutDates { get; set; }
Property Value
Type Description
DateTimeOffsetCollection

The default value is null.
Remarks

Disable the date in DateTimeSpinnerBase if the SelectedDateTime value is present in BlackoutDates. System.InvalidOperationException will be thrown when a BlackoutDate is selected.

Examples

The following example shows how to add date in BlackoutDates collections.

<Grid>
    <syncfusion:DateTimeSpinnerBase x:Name="DateTimeSpinnerBase" />
</Grid>
public MainPage()
{
   this.InitializeComponent();
   DateTimeSpinnerBase.BlackoutDates = new Syncfusion.UI.Xaml.Editors.DateTimeOffsetCollection();
   DateTimeSpinnerBase.BlackoutDates.Add(DateTimeOffset.Now.AddDays(-7));
}

CalendarIdentifier

Gets or sets the calendar system to use.

Declaration
public string CalendarIdentifier { get; set; }
Property Value
Type Description
System.String

The default calendar is System.Globalization.GregorianCalendar.
Remarks

Set the CalendarIdentifier property to specify the calendar system used by the DateTimeSpinnerBase. The DateTimeSpinnerBase supports all calendar systems in the CalendarIdentifiers class except System.Globalization.JapaneseCalendar and Lunar type calendars.

Examples

The following example shows how to set the CalendarIdentifier in DateTimeSpinnerBase.

<Grid>
   <syncfusion:DateTimeSpinnerBase x:Name="julianDatePicker" CalendarIdentifier="JulianCalendar"/>
</Grid>
public MainPage()
{
   this.InitializeComponent();
   julianDatePicker.CalendarIdentifier = Windows.Globalization.CalendarIdentifiers.Julian;
}

DisplayDateTimeFormat

Gets or sets the System.DateTime format used to format the DateTimeSpinnerBase value for display purposes.

Declaration
public string DisplayDateTimeFormat { get; set; }
Property Value
Type Description
System.String

The default value is "{}{month.abbreviated}{day.integer}{year.full}".

ItemContainerStyle

Gets or sets the Microsoft.UI.Xaml.Style that is applied to the SpinnerItem generated for each item in SpinnerColumnView.

Declaration
public Style ItemContainerStyle { get; set; }
Property Value
Type Description
Microsoft.UI.Xaml.Style

The default value is null.
Examples

The following example shows how to define a ItemContainerStyle for the DateTimeSpinnerBase control.

<Page.Resources>
    <Style x:Key="ItemContainerStyle" TargetType="syncfusion:SpinnerItem">
        <Setter Property="FontStyle" Value="Oblique" />
    </Style>
</Page.Resources>
<Grid>
    <syncfusion:DateTimeSpinnerBase
        x:Name="DateTimeSpinnerBase"
        ItemContainerStyle="{StaticResource ItemContainerStyle}" />
</Grid>

ItemTemplate

Gets or sets the DataTemplate that defines the visual representation of the drop-down item.

Declaration
public DataTemplate ItemTemplate { get; set; }
Property Value
Type Description
Microsoft.UI.Xaml.DataTemplate

The default value is null.
Remarks

The DateTimeFieldItemInfo is the data context of this DataTemplate.

Examples

The following example shows how to define a ItemTemplate for the DateTimeSpinnerBase control.

<Page.Resources>
    <DataTemplate x:Name="ItemTemplate">
        <Grid
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            Background="pink">
            <TextBlock
                Foreground="Red"
                Text="{Binding DisplayText}" />
        </Grid>
    </DataTemplate>
</Page.Resources>
<Grid>
    <syncfusion:DateTimeSpinnerBase
        x:Name="dateTimeSpinnerBase"
        ItemTemplate="{StaticResource ItemTemplate}" />
</Grid>

ItemTemplateSelector

Gets or sets the custom logic for choosing a template used to display each item.

Declaration
public DataTemplateSelector ItemTemplateSelector { get; set; }
Property Value
Type Description
Microsoft.UI.Xaml.Controls.DataTemplateSelector

The default is null.
Examples

The following example shows how to define a ItemTemplateSelector for the DateTimeSpinnerBase control.

<Application.Resources>
    <DataTemplate x:Name="SelectorItemTemplate1">
        <Grid Background="Pink">
            <TextBlock Text="{Binding DisplayText}" Foreground="Yellow" />
        </Grid>
    </DataTemplate>
    <DataTemplate x:Name="SelectorItemTemplate2">
        <Grid Background="Orange">
            <TextBlock Text="{Binding DisplayText}" Foreground="Red" />
        </Grid>
    </DataTemplate>
</Application.Resources>
<Page.Resources>
    <local:DayTemplateSelector x:Key="dayTemplateSelector" />
</Page.Resources>
<Grid>
    <syncfusion:DateTimeSpinnerBase
        x:Name="datepicker"
        ItemTemplateSelector="{StaticResource dayTemplateSelector}" />
</Grid>
public MainPage()
{
   this.InitializeComponent();
   ObservableCollection<string> dayCollection = new ObservableCollection<string>();
   for (int i = 1; i <= 31; i++)
   {
       dayCollection.Add(i.ToString());
   }
   dayColumn.ItemsSource = dayCollection;
}

public class DayTemplateSelector : DataTemplateSelector
{
   protected override DataTemplate SelectTemplateCore(object item, DependencyObject container)
   {
     if (item != null)
     {
        DateTimeFieldItemInfo dateTimeField = item as DateTimeFieldItemInfo;
        if (dateTimeField.Field == DateTimeField.Day)
        {
           if (int.Parse(dateTimeField.DisplayText) < 15)
               return Application.Current.Resources["SelectorItemTemplate1"] as DataTemplate;
           else
               return Application.Current.Resources["SelectorItemTemplate2"] as DataTemplate;
        }
     }
     return base.SelectTemplateCore(item, container);
   }
}

MaxDateTime

Gets or sets the maximum number of dates to be listed in the DateTimeSpinnerBase control.

Declaration
public DateTimeOffset MaxDateTime { get; set; }
Property Value
Type Description
System.DateTimeOffset

The maximum number of dates to be listed in the DateTimeSpinnerBase.

MinDateTime

Gets or sets the minimum number of dates to be listed in the DateTimeSpinnerBase control.

Declaration
public DateTimeOffset MinDateTime { get; set; }
Property Value
Type Description
System.DateTimeOffset

The minimum number of dates to be listed in the DateTimeSpinnerBase.

SelectedDateTime

Gets or sets the currently selected date for DateTimeSpinnerBase.

Declaration
public Nullable<DateTimeOffset> SelectedDateTime { get; set; }
Property Value
Type Description
System.Nullable<System.DateTimeOffset>

The default value is System.DateTimeOffset.Now.

Methods

Dispose(Boolean)

Release the unmanaged resources of SpinnerView.

Declaration
protected override void Dispose(bool disposing)
Parameters
Type Name Description
System.Boolean disposing

Used to indicate perform dispose or not.
Overrides

InvalidateFields(DateTimeField)

Helps to invalidate specific date time field in DateTimeSpinnerBase.

Declaration
public void InvalidateFields(DateTimeField field)
Parameters
Type Name Description
DateTimeField field

The date time field.

ItemPrepared(Int32, ISpinnerItemInfo, SpinnerItem)

Invoked each time an element is made ready for use.

Declaration
public override void ItemPrepared(int index, ISpinnerItemInfo spinnerItemInfo, SpinnerItem element)
Parameters
Type Name Description
System.Int32 index

The column index.
ISpinnerItemInfo spinnerItemInfo

The spinner item info.
SpinnerItem element

The spinner item.
Overrides
Remarks

This method is invoked for both a newly created element as well as an element that already exists and is being re-used from the recycle queue.

OnApplyTemplate()

Declaration
protected override void OnApplyTemplate()
Overrides

OnCreateAutomationPeer()

Declaration
protected override AutomationPeer OnCreateAutomationPeer()
Returns
Type
Microsoft.UI.Xaml.Automation.Peers.AutomationPeer
Overrides

OnSelectionChanged(SpinnerItemSelectionChangedEventArgs)

Invoked when the selection is changed in SpinnerColumnView.

Declaration
public override void OnSelectionChanged(SpinnerItemSelectionChangedEventArgs eventArgs)
Parameters
Type Name Description
SpinnerItemSelectionChangedEventArgs eventArgs

Contains details regarding old and new selected index value.
Overrides
Remarks

This method occurs whenever there is a change to a selection. A selection can be changed programmatically or by user interaction like scrolling, key navigation.

Events

DateTimeFieldItemPrepared

Occurs when a SpinnerItem is loading, for each items in date or time field.

Declaration
public event EventHandler<DateTimeFieldItemPreparedEventArgs> DateTimeFieldItemPrepared
Event Type
Type
System.EventHandler<DateTimeFieldItemPreparedEventArgs>
Remarks

Content and appearance of items in drop-down can be customized using this event.

DateTimeFieldPrepared

Occurs when a field of date or time is loading.

Declaration
public event EventHandler<DateTimeFieldPreparedEventArgs> DateTimeFieldPrepared
Event Type
Type
System.EventHandler<DateTimeFieldPreparedEventArgs>

SelectedDateTimeChanged

Occurs when the SelectedDateTime value is changed.

Declaration
public event EventHandler<SelectedDateTimeChangedEventArgs> SelectedDateTimeChanged
Event Type
Type
System.EventHandler<SelectedDateTimeChangedEventArgs>

Implements

System.IDisposable