"String was not recognized as a valid DateTime" when opening Custom Recurrence dialog

[Daniel]

Hi,

 

I am getting the error "String was not recognized as a valid DateTime" when I click on Custom in the recurrence screen. Am I missing a localization setting? My android device is in Pt-Br.

 

In the output windows I can see:

 

10-08 15:49:27.438 E/AppCenterCrashes(24492): Unhandled Exception from source=AndroidEnvironment
10-08 15:49:27.438 E/AppCenterCrashes(24492): System.FormatException: String was not recognized as a valid DateTime.
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at System.DateTimeParse.ParseExact (System.ReadOnlySpan`1[T] s, System.ReadOnlySpan`1[T] format, System.Globalization.DateTimeFormatInfo dtfi, System.Globalization.DateTimeStyles style) [0x00024] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/Common/src/CoreLib/System/Globalization/DateTimeParse.cs:31
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at System.DateTime.ParseExact (System.String s, System.String format, System.IFormatProvider provider) [0x00014] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/Common/src/CoreLib/System/DateTime.cs:1131
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Telerik.XamarinForms.Input.CalendarYearlyViewPicker.DateView_PropertyChanged (System.Object sender, System.ComponentModel.PropertyChangedEventArgs e) [0x00040] in <8d058a9ae5d34d7aa63e24afe6fbbabc>:0
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at (wrapper delegate-invoke) <Module>.invoke_void_object_PropertyChangedEventArgs(object,System.ComponentModel.PropertyChangedEventArgs)
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Xamarin.Forms.BindableObject.OnPropertyChanged (System.String propertyName) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:229
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Xamarin.Forms.Element.OnPropertyChanged (System.String propertyName) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\Element.cs:358
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Telerik.XamarinForms.Input.RecurrencePeriodView.set_IsSelected (System.Boolean value) [0x00017] in <8d058a9ae5d34d7aa63e24afe6fbbabc>:0
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Telerik.XamarinForms.Input.CalendarYearlyViewPicker.SetInitialSelectedChildren (System.Collections.ObjectModel.ObservableCollection`1[T] newValue) [0x00073] in <8d058a9ae5d34d7aa63e24afe6fbbabc>:0
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Telerik.XamarinForms.Input.CalendarYearlyViewPicker.OnSelectedMonthsChanged (Xamarin.Forms.BindableObject bindable, System.Object oldValue, System.Object newValue) [0x00003] in <8d058a9ae5d34d7aa63e24afe6fbbabc>:0
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Xamarin.Forms.BindableObject.SetValueActual (Xamarin.Forms.BindableProperty property, Xamarin.Forms.BindableObject+BindablePropertyContext context, System.Object value, System.Boolean currentlyApplying, Xamarin.Forms.Internals.SetValueFlags attributes, System.Boolean silent) [0x00120] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:463
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Xamarin.Forms.BindableObject.SetValueCore (Xamarin.Forms.BindableProperty property, System.Object value, Xamarin.Forms.Internals.SetValueFlags attributes, Xamarin.Forms.BindableObject+SetValuePrivateFlags privateAttributes) [0x00173] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:397
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Xamarin.Forms.BindingExpression.ApplyCore (System.Object sourceObject, Xamarin.Forms.BindableObject target, Xamarin.Forms.BindableProperty property, System.Boolean fromTarget) [0x00214] in D:\a\1\s\Xamarin.Forms.Core\BindingExpression.cs:155
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Xamarin.Forms.BindingExpression.Apply (System.Boolean fromTarget) [0x0003e] in D:\a\1\s\Xamarin.Forms.Core\BindingExpression.cs:53
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Xamarin.Forms.BindingExpression+BindingExpressionPart.<PropertyChanged>b__49_0 () [0x00000] in D:\a\1\s\Xamarin.Forms.Core\BindingExpression.cs:742
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Xamarin.Forms.BindingExpression+BindingExpressionPart.PropertyChanged (System.Object sender, System.ComponentModel.PropertyChangedEventArgs args) [0x000cb] in D:\a\1\s\Xamarin.Forms.Core\BindingExpression.cs:753
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Xamarin.Forms.BindingExpression+WeakPropertyChangedProxy.OnPropertyChanged (System.Object sender, System.ComponentModel.PropertyChangedEventArgs e) [0x00012] in D:\a\1\s\Xamarin.Forms.Core\BindingExpression.cs:646
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at (wrapper delegate-invoke) <Module>.invoke_void_object_PropertyChangedEventArgs(object,System.ComponentModel.PropertyChangedEventArgs)
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Telerik.XamarinForms.Common.NotifyPropertyChangedBase.OnPropertyChanged (System.String propertyName) [0x00015] in <204e483098f14490aba225eef00b07db>:0
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Telerik.XamarinForms.Input.Calendar.CustomRecurrenceViewModel.set_SelectedMonthsOfYear (System.Collections.ObjectModel.ObservableCollection`1[T] value) [0x00010] in <8d058a9ae5d34d7aa63e24afe6fbbabc>:0
10-08 15:49:27.438 E/AppCenterCrashes(24492):   at Telerik.Xamar

[Didi]

Hi Daniel,

I changed the device culture to Pr-Br, click on the custom recurrence dialog, and no issues on my side. Maybe I am missing something. Could you please elaborate more on the behavior and what are the exact steps to reproduce the issue? 

I look forward to your reply.

Regards,
Didi
Progress Telerik

[Daniel]

Hi, Didi

I found out that the problem was with Calendar_MonthAbbreviation* strings in the resource file. The custom recurrence view only works with the English strings. Probably is not using the current culture in the TryParse method.

 

Thank you again.