Spinner Customization in WinUI Date Picker
23 Apr 2021 / 14 minutes to read
This section describes about the various spinner customization options available in Date Picker control.
Change the size of dropdown cells
You can change the cell size in the drop down date spinner by setting the values to ItemWidth and ItemHeight properties. The default value of the ItemWidth and ItemHeight properties is 80 and 40.
You can also restrict the width of drop down date spinner cells with particular pixels by using the MinItemWidth and MaxItemWidth properties. The default value of MinItemWidth property is 0 and MaxItemWidth property is Infinity.
NOTE
ItemWidthvalues must be within theMinItemWidthandMaxItemWidthvalues. Otherwise,ItemWidthwill take the closest value fromMinItemWidthorMaxItemWidthvalue.
<editors:SfDatePicker MinItemWidth="70"
MaxItemWidth="120"
ItemWidth="100"
ItemHeight="50"
x:Name="sfDatePicker"/>SfDatePicker sfDatePicker = new SfDatePicker();
sfDatePicker.MinItemWidth = 70;
sfDatePicker.MaxItemWidth = 120;
sfDatePicker.ItemWidth = 100;
sfDatePicker.ItemHeight = 50;
NOTE
Download demo application from GitHub
Customize the cells in dropdown spinner
You can customize all the dropdown date spinner cells by using the ItemContainerStyle or ItemTemplate properties. The DataContext of ItemContainerStyle or ItemTemplate properties is SpinnerItem.
<editors:SfDatePicker
x:Name="sfDatePicker">
<editors:SfDatePicker.ItemContainerStyle>
<Style TargetType="editors:SpinnerItem">
<Setter Property="Foreground" Value="Red"/>
<Setter Property="FontStyle" Value="Italic"/>
</Style>
</editors:SfDatePicker.ItemContainerStyle>
</editors:SfDatePicker>
Customize the specific cell in dropdown spinner
You can change the UI of specific date, month or year cells in dropdown spinner by using the ItemTemplateSelector property. The DataContext of ItemTemplateSelector is SpinnerItem.
public class DateItemTemplateSelector : DataTemplateSelector
{
public DataTemplate DefaultTemplate { get; set; }
public DataTemplate BirthdayTemplate { get; set; }
public DataTemplate GiftTemplate { get; set; }
public DataTemplate AwardTemplate { get; set; }
protected override DataTemplate SelectTemplateCore(object item, DependencyObject container)
{
DateTimeFieldItemInfo dateTimeField = item as DateTimeFieldItemInfo;
if (dateTimeField.Field == DateTimeField.Day)
{
switch (dateTimeField.DateTime.Value.Day)
{
case 2:
return BirthdayTemplate as DataTemplate;
case 7:
return GiftTemplate as DataTemplate;
case 12:
return AwardTemplate as DataTemplate;
case 17:
return BirthdayTemplate as DataTemplate;
case 20:
return GiftTemplate as DataTemplate;
case 26:
return AwardTemplate as DataTemplate;
}
}
return base.SelectTemplateCore(item, container);
}
}<Page.Resources>
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<x:String x:Key="gift">M14.072999,21.71989L14.173005,21.71989 23.954012,21.71989 23.954012,30.402982C23.954012,31.300994,23.255007,31.999997,22.356997,31.999997L14.072999,31.999997z M1.2980041,21.71989L11.178987,21.71989 11.178987,31.999997 2.8949892,31.999997C1.9960022,31.999997,1.2980041,31.300994,1.2980041,30.402982z M19.661989,3.2556945C19.06299,3.2556945,14.072999,7.3477336,12.975007,8.545744L12.975007,8.8447515C13.674012,8.6447526 15.670015,7.1477343 17.267,6.1497227 19.162996,5.0517112 19.962008,3.7546926 19.661989,3.2556945z M5.5889899,3.2556945C5.3899848,3.7546926 6.1879889,5.0517112 7.984986,6.2497221 9.4819957,7.2477342 11.578004,8.6447526 12.277009,8.9447509L12.277009,8.6447526C11.178987,7.3477336,6.287995,3.2556945,5.5889899,3.2556945z M17.864281,0.00017286225C18.476668,-0.0068490629 19.175909,0.19928326 19.962008,0.76066515 22.756014,2.6566814 22.656008,4.2536984 22.656008,5.2517105 22.157015,7.447733 19.463015,8.4457446 16.868014,8.9447509L23.355013,8.9447509C24.252993,8.9447509,24.951998,9.6427566,24.951998,10.541768L24.951998,13.235797C24.951998,13.834803,24.553011,14.433808,24.053988,14.633815L24.053988,19.723867 14.173005,19.723867 14.173005,9.3437568 13.574006,9.3437568 13.075013,9.3437568 12.675996,9.3437568 12.277009,9.3437568 11.578004,9.3437568 11.477998,9.3437568 11.178987,9.3437568 11.178987,19.723867 1.2980041,19.723867 1.2980041,14.732815C0.59899889,14.533815,-2.3291432E-07,13.934802,0,13.136797L0,10.441769C-2.3291432E-07,9.5437566,0.69900499,8.8447515,1.5969848,8.8447515L8.4840099,8.8447515C5.8890082,8.545744 3.0939943,7.447733 2.6950075,5.2517105 2.6950075,4.353706 2.5950014,2.7566885 5.3899848,0.76066515 6.0889899,0.261659 6.7869879,0.061659901 7.385987,0.061660053 8.9830028,0.061659901 10.080995,1.4586705 10.480012,1.8586761 10.878999,2.2576827 12.076997,4.452706 12.675996,6.6487285 13.274995,4.452706 14.471986,2.2576827 14.871003,1.8586761 15.301535,1.4281411 16.29929,0.018116923 17.864281,0.00017286225z</x:String>
<x:String x:Key="award">M6.4050484,19.617198L3.7509956,25.34103 6.5209923,24.451031 7.7069907,27.094029 10.305956,21.486943 10.209199,21.463142C8.8243089,21.103976,7.5456314,20.475896,6.431808,19.637838z M20.198464,18.975471L19.810075,19.313839C18.872342,20.092266,17.802781,20.71557,16.640677,21.144267L16.418594,21.22308 18.634039,27.072047 19.967047,24.487023 22.674016,25.519068z M12.916001,5.5320349C9.9759998,5.5320349 7.5829983,7.9410334 7.5829983,10.903033 7.5829983,13.865032 9.9759998,16.274031 12.916001,16.274031 15.857003,16.274031 18.250004,13.865032 18.250004,10.903033 18.250004,7.9410334 15.857003,5.5320349 12.916001,5.5320349z M12.916001,3.5320349C16.960003,3.5320349 20.250005,6.8390341 20.250005,10.903033 20.250005,14.968032 16.960003,18.274031 12.916001,18.274031 8.8729992,18.274031 5.5829973,14.968032 5.5829973,10.903033 5.5829973,6.8390341 8.8729992,3.5320349 12.916001,3.5320349z M12.91602,2.0000057C8.0390205,2.0000057 4.0710211,5.9940157 4.0710211,10.903028 4.0710211,15.81304 8.0390205,19.80705 12.91602,19.80705 17.79302,19.80705 21.761019,15.81304 21.761019,10.903028 21.761019,5.9940157 17.79302,2.0000057 12.91602,2.0000057z M12.91602,0C18.89502,0 23.761019,4.8920126 23.761019,10.903028 23.761019,13.251471 23.018526,15.429016 21.757237,17.210832L21.674238,17.325164 21.711064,17.311053 26.135013,28.99606 20.926031,27.007045 18.356024,31.999053 14.455157,21.696701 14.295179,21.719278C13.843446,21.777196 13.383129,21.807055 12.91602,21.807055 12.822598,21.807055 12.729448,21.805861 12.636584,21.803486L12.375046,21.793458 7.6759906,31.926026 5.4279938,26.921029 0,28.665028 4.8565531,18.189458 4.5508928,17.834802C3.0024042,15.949165 2.0710211,13.533284 2.0710211,10.903028 2.0710211,4.8920126 6.9370208,0 12.91602,0z</x:String>
<DataTemplate x:Key="defaultTemplate">
<TextBlock Text="{Binding DisplayText}" />
</DataTemplate>
<DataTemplate x:Key="birthdayTemplate">
<Grid>
<TextBlock
HorizontalAlignment="Center"
VerticalAlignment="Center"
Text="{Binding DisplayText}" />
<Path
Width="18"
Height="18"
Margin="3"
HorizontalAlignment="Right"
VerticalAlignment="Bottom"
Data="{StaticResource birthday}"
Fill="{ThemeResource SystemBaseHighColor}"
Stretch="Uniform" />
</Grid>
</DataTemplate>
<DataTemplate x:Key="giftTemplate">
<Grid>
<TextBlock
HorizontalAlignment="Center"
VerticalAlignment="Center"
Text="{Binding DisplayText}" />
<Path
Width="18"
Height="18"
Margin="3"
HorizontalAlignment="Right"
VerticalAlignment="Bottom"
Data="{StaticResource gift}"
Fill="{ThemeResource SystemBaseHighColor}"
Stretch="Uniform" />
</Grid>
</DataTemplate>
<DataTemplate x:Key="awardTemplate">
<Grid>
<TextBlock
HorizontalAlignment="Center"
VerticalAlignment="Center"
Text="{Binding DisplayText}" />
<Path
Width="18"
Height="18"
Margin="3"
HorizontalAlignment="Right"
VerticalAlignment="Bottom"
Data="{StaticResource award}"
Fill="{ThemeResource SystemBaseHighColor}"
Stretch="Uniform" />
</Grid>
</DataTemplate>
<local:DateItemTemplateSelector
x:Key="selector"
AwardTemplate="{StaticResource awardTemplate}"
BirthdayTemplate="{StaticResource birthdayTemplate}"
DefaultTemplate="{StaticResource defaultTemplate}"
GiftTemplate="{StaticResource giftTemplate}" />
</Page.Resources>
<editors:SfDatePicker ItemTemplateSelector="{StaticResource selector}"
x:Name="sfDatePicker"/>
NOTE
Download demo application from GitHub
Customize the date field in dropdown spinner using event
You can change the date format, header text, size of date field cells, customize the UI of date field cells and enables the date looping, etc., by using the DateFieldPrepared event.
Here, date format, header and cell size of the dropdown date field is customized by using DateFieldPrepared event.
NOTE
This will effective only for the date field cells.
<editors:SfDatePicker DateFieldPrepared="SfDatePicker_DateFieldPrepared"
x:Name="sfDatePicker"/>SfDatePicker sfDatePicker = new SfDatePicker();
sfDatePicker.DateFieldPrepared = SfDatePicker_DateFieldPrepared;You can handle the event as follows,
private void SfDatePicker_DateFieldPrepared(object sender, DateTimeFieldPreparedEventArgs e)
{
if (e.Column != null && e.Column.Field == DateTimeField.Day)
{
e.Column.Format = "ddd dd";
e.Column.Header = "Select Date";
e.Column.ShowHeader = true;
e.Column.ItemHeight = 60;
e.Column.ItemWidth = 100;
e.Column.ShouldLoop = true;
}
}
NOTE
Download demo application from GitHub
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