RadDatePicker throws Exception

[Ivan]

Hi.

I've been using Telerik controls for a while, and with the latest release, RadDatePicker throws a NullReferenceException after opening the dropdown of the control, configured with DateSelectionMode= "Month".

This happens on  Telerik RadControls for WPF 2013.1.220.40

Could you fix this problem?

XAML Code:

<telerik:RadDatePicker Name="MonthRDP" Grid.Column="1" DateSelectionMode="Month"  />

StackTrace: 

en Telerik.Windows.Controls.RadCalendar.PopulateMonths() en c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Input\Calendar\RadCalendar.cs:línea 3644
en Telerik.Windows.Controls.RadCalendar.UpdateCalendarViews() en c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Input\Calendar\RadCalendar.cs:línea 2723
en Telerik.Windows.Controls.RadDateTimePicker.OnIsDropDownOpenChanged() en c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Input\DateTimePicker\RadDateTimePicker.cs:línea 1297
en Telerik.Windows.Controls.RadDateTimePicker.OnIsDropDownOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) en c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Input\DateTimePicker\RadDateTimePicker.cs:línea 1221
en System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
en System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
en System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
en System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
en System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
en MS.Internal.Data.PropertyPathWorker.SetValue(Object item, Object value)
en MS.Internal.Data.ClrBindingWorker.UpdateValue(Object value)
en System.Windows.Data.BindingExpression.UpdateSource(Object value)

Thanks

[Szymon]

I have exactly the same problem, but with DateSelectionMode="Year".

XAML Code:

<telerik:RadDatePicker x:Name="YearDatePicker"
                DateSelectionMode="Year"
                DisplayFormat="Short"
                InputMode="DatePicker"
                SelectedDate="{Binding StartDate, Mode=TwoWay}"
                Style="{DynamicResource datePickerStyle}" />

NullReferenceException Stack Trace:

w Telerik.Windows.Controls.RadCalendar.PopulateYears() w c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Input\Calendar\RadCalendar.cs:wiersz 3695
w Telerik.Windows.Controls.RadCalendar.UpdateCalendarViews() w c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Input\Calendar\RadCalendar.cs:wiersz 2726
w Telerik.Windows.Controls.RadDateTimePicker.OnIsDropDownOpenChanged() w c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Input\DateTimePicker\RadDateTimePicker.cs:wiersz 1297
w Telerik.Windows.Controls.RadDateTimePicker.OnIsDropDownOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) w c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Input\DateTimePicker\RadDateTimePicker.cs:wiersz 1221
w System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)

[Georgi]

Hello guys,

We are aware of this issue and we have just fixed it. As you can see in this release note the fix is available in our Latest Internal Build.
It would be great if you can give it a try and let us know if everything works as expected.

Regards,
Georgi
the Telerik team

[Szymon]

Hello Georgi,

After downloading last internal build and updating references everything looks good.
Thanks for fast fix. Now I can wait for update in official release.

Szymon