MVVM Observable Collection with Calendar SelectedDates

[Teresa]

I would like to bind SelectedDates in the calendar to an ObservableCollection exposed via my View Model but I only see SelectedDate available as a two way binding and not SelectedDates.   I don't really want to two way bind to the observable collection but without this capability, the collection does not seem to be visible to bind to.  I can wire to the onchange event in code.  That may be the right way to do it but it feels wrong so I thought I would check.

[Kaloyan]

Hello Teresa,

It is not possible to bind the SelectedDates property as it is marked as a read only. Let us know if you need any further help.

Regards,
Kaloyan
the Telerik team

[Michael]

You documentation on this property reads as follows:

"The SelectedDates collection is an observable collection (although it is exposed as an IList) which contains the currently selected dates and can be used in binding."

Note the last 5 words.
You need to update that so I don't waste hours building a UI with the expectation that this will work.

[Kaloyan]

Hi Michael,

Thank you for the comments. We will update the online help shortly. As a solution you can expose a custom attached property of Dates and set binding through it.

Sincerely yours,
Kaloyan
the Telerik team

[saw]

Any way to bind SelectedDates into ViewModel ObservableCollection<DateTime> ?

[Nasko]

Hello Shalin,

With current version of RadCalendar it is not possible to bind the SelectedDates property to a Collection of DateTime objects because it is a read only property. We have already logged this feature request in our feedback portal and you can easily track its status on the following link:
http://feedback.telerik.com/Project/143/Feedback/Details/87989-add-selecteddates-dependency-property

However, as a workaround we could suggest you to check the following blog post that demonstrates how to create an additional property for the SelectedDates property and thus to achieve the desired:
http://blogs.telerik.com/xamlteam/posts/11-06-13/using-the-multiple-selection-of-the-radcalendar-control-for-silverlight-and-wpf-with-mvvm.aspx

We hope this will help you.

Regards,
Nasko
Telerik

 

 

[saw]

I just used "SelectionChanged" in radCalendar,

ViewModel.SelectedDates = this.Calendars.SelectedDates;