Exception on Custom Appointments

[Stephan Blaurock]

Hello,

I try to create Custom Appointment and paste and copy your code-snippet in my project:

https://help.syncfusion.com/xamarin/sfschedule/data-bindings#creating-custom-appointments

But if I set the collection to the schedule I get an exception: "System.ArgumentNullException": Value cannot be null. Parameter name: fromDate

You can test you example-code in the version 16.3.0.21.

Following the complete StackTrace:

  at Foundation.NSCalendar.Components (Foundation.NSCalendarUnit unitFlags, Foundation.NSDate fromDate) [0x00003] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/Foundation/NSCalendar.g.cs:127 

  at Syncfusion.SfSchedule.iOS.ScheduleHelper.ConvertNSDateToDateTime (Foundation.NSDate calendar) [0x00005] in <e63d7725cbea4a3ea85fdfadec10606c>:0 

  at Syncfusion.SfSchedule.iOS.AppointmentEngine.GenerateScheduleAppointments (System.Collections.IEnumerable itemsSource, Syncfusion.SfSchedule.iOS.AppointmentMapping appointmentMapping) [0x00056] in <e63d7725cbea4a3ea85fdfadec10606c>:0 

  at Syncfusion.SfSchedule.iOS.SFSchedule.GenerateAppointments () [0x00012] in <e63d7725cbea4a3ea85fdfadec10606c>:0 

  at Syncfusion.SfSchedule.iOS.SFSchedule.set_ItemsSource (System.Collections.IEnumerable value) [0x0000f] in <e63d7725cbea4a3ea85fdfadec10606c>:0 

  at Syncfusion.SfSchedule.XForms.iOS.Mapping.SfScheduleMapping.OnSfSchedulePropertiesChanged (System.String propertyName, Syncfusion.SfSchedule.XForms.SfSchedule formSfSchedule, Syncfusion.SfSchedule.iOS.SFSchedule nativeSchedule, Syncfusion.SfSchedule.XForms.iOS.SfScheduleRenderer scheduleRenderer) [0x00164] in <049f7d3dabb9424cb5fa5a8902b1b154>:0 

  at Syncfusion.SfSchedule.XForms.iOS.SfScheduleRenderer.OnElementPropertyChanged (System.Object sender, System.ComponentModel.PropertyChangedEventArgs e) [0x00030] in <049f7d3dabb9424cb5fa5a8902b1b154>:0 

  at (wrapper delegate-invoke) <Module>.invoke_void_object_PropertyChangedEventArgs(object,System.ComponentModel.PropertyChangedEventArgs)

  at Xamarin.Forms.BindableObject.OnPropertyChanged (System.String propertyName) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:150 

  at Xamarin.Forms.Element.OnPropertyChanged (System.String propertyName) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\Element.cs:370 

  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) [0x00114] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:623 

  at Xamarin.Forms.BindableObject.SetValueCore (Xamarin.Forms.BindableProperty property, System.Object value, Xamarin.Forms.Internals.SetValueFlags attributes, Xamarin.Forms.BindableObject+SetValuePrivateFlags privateAttributes) [0x0015b] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:417 

  at Xamarin.Forms.BindableObject.SetValue (Xamarin.Forms.BindableProperty property, System.Object value, System.Boolean fromStyle, System.Boolean checkAccess) [0x0003d] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:573 

  at Xamarin.Forms.BindableObject.SetValue (Xamarin.Forms.BindableProperty property, System.Object value) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:99 

  at Syncfusion.SfSchedule.XForms.SfSchedule.set_DataSource (System.Collections.IEnumerable value) [0x00000] in <a36559b5d41b41d2a591349b390a6dd0>:0 

  at GinkgoMobile.Pages.Kalender.KalenderView.SetKalenderGruppe (Modules.Cross.Kalender.Models.KalenderGruppeViewModel kgvm) [0x00058] in /Users/stephanblaurock/Projects/GinkgoMobile/GinkgoMobile/Pages/Kalender/KalenderView.xaml.cs:88 

  at GinkgoMobile.Pages.Kalender.KalenderPagePhone._NavigatorView_KalenderGruppeViewModelChanged (System.Object sender, System.EventArgs e) [0x0000a] in /Users/stephanblaurock/Projects/GinkgoMobile/GinkgoMobile/Pages/Kalender/KalenderPagePhone.xaml.cs:35 

  at GinkgoMobile.Pages.Kalender.NavigatorView.Handle_ItemTapped (System.Object sender, Xamarin.Forms.ItemTappedEventArgs e) [0x0000d] in /Users/stephanblaurock/Projects/GinkgoMobile/GinkgoMobile/Pages/Kalender/NavigatorView.xaml.cs:30 

  at Xamarin.Forms.ListView.NotifyRowTapped (System.Int32 groupIndex, System.Int32 inGroupIndex, Xamarin.Forms.Cell cell) [0x00075] in D:\a\1\s\Xamarin.Forms.Core\ListView.cs:424 

  at Xamarin.Forms.Platform.iOS.ListViewRenderer+ListViewDataSource.RowSelected (UIKit.UITableView tableView, Foundation.NSIndexPath indexPath) [0x0006f] in <66855f87e3b64ff38a3e1034f86d8129>:0 

  at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain(int,string[],intptr,intptr)

  at UIKit.UIApplication.Main (System.String[] args, System.IntPtr principal, System.IntPtr delegate) [0x00005] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/UIKit/UIApplication.cs:79 

  at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0002c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/12.0.0.15/src/Xamarin.iOS/UIKit/UIApplication.cs:63 

  at GinkgoMobile.iOS.Application.Main (System.String[] args) [0x00001] in /Users/stephanblaurock/Projects/GinkgoMobile/GinkgoMobile.iOS/Main.cs:14 

Thank you for your help!

[Vigneshkumar Ramasamy]

Hi Stephan 

Thanks for contacting Syncfusion support. 

 

We are not able to reproduce the “Exception on custom appointments” issue, we have prepared a simple sample based on your requirement we also copy paste the code from our UG(https://help.syncfusion.com/xamarin/sfschedule/data-bindings#creating-custom-appointments
) 

 

Please find the sample below: 

http://www.syncfusion.com/downloads/support/directtrac/general/ze/CustomAppointment803190750 

 

Please check the above attached sample ,still if you face any issues please revert us with more information so that we could analyze further and provide you the possible solution. 

 

Regards,
Vigneshkumar R 

[Stephan Blaurock]

Hello,

thanks for your test-project. Now I found my mistake - I set the end-tag-character of the mapping-tag wrong:

<syncfusion:ScheduleAppointmentMapping> 
                        SubjectMapping="EventName"
                        StartTimeMapping="From"
                        EndTimeMapping="To"
</syncfusion:ScheduleAppointmentMapping>

now with this version it works fine :-)

<syncfusion:ScheduleAppointmentMapping 
                        SubjectMapping="EventName"
                        StartTimeMapping="From"
                        EndTimeMapping="To">
</syncfusion:ScheduleAppointmentMapping>

Sorry and thanks

[Vigneshkumar Ramasamy]

Hi Stephan  

 

We glad to know that your requirement has been achieved. Please get in touch if you required further assistance on this. 

   

Regards 

Vigneshkumar R