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6 answers
345 views

Hi,

Why can't we add an item to a bound ObservableCollection? it throws a dictionary exception

The only way to work around it is this kind of fudge:

var copy = new ObservableCollection<OrderItem>(Orders) {newOrder};
Orders = new ObservableCollection<OrderItem>(copy);

It worked fine before with a Xamarin Listview, when I refactored an existing app for Telerik RadList then this issue arose. Our WPF guys were saying they have the same issue with the WPF RadGrid.

Is this intended behavior or a bug? 

Thanks,

Norman.

N Mackay
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 answered on 29 Jan 2016
1 answer
89 views

Hi,

After updating to 2016.1.113 we have issues updating the form values at runtime.

example:

if the datasource is initialised as

dataSource = new TKDataFormEntityDataSourceHelper (this.CurrentAddress);

.... datasource definitions .... (including the Longitude)

the form datasource as

DataForm.WeakDataSource = dataSource.NativeObject;

.... we have an issue with the following code

CurrentAddress.Longitude = coord.Longitude;

dataSource ["Longitude"].ValueCandidate = new NSDecimalNumber (coord.Longitude);

DataForm.Update ();

.... the objects contains the new value but it is not displayed on the UI

It was working fine in the previous version.

Any suggestion?

Thank you,

Gelu

 

Adrian
Telerik team
 answered on 26 Jan 2016
1 answer
155 views

I would like to know if anyone has successfully developed a way to activate the Telerik SideDrawer from an Android API level 21 or higher Toolbar dedicated navigation button in Xamarin Forms.

It does not appear that there is any provision for doing this within a Xamarin Forms NavigationPage, so I assume that it would likely require a custom renderer.

I have been able to activate it from a NavigationPage ToolbarItem (though I have not yet created a custom renderer for aligning the button to the left), but I would prefer to be able to do it from the dedicated navigation button which supports navigation button animations, etc.

Thanks,

Craig


 
 
Pavel R. Pavlov
Telerik team
 answered on 18 Jan 2016
1 answer
142 views
Going off of the information from http://docs.telerik.com/devtools/android/controls/calendar/calendar-displaying-events, I was wondering if the inclusion of the EventsManager() for customizing the display of events allows us to add more fields to the inline event display to include fields other than start time, end time, and subject? And if so, can anyone provide an example?
Todor
Telerik team
 answered on 15 Jan 2016
2 answers
94 views

Hi Team, 

    We have been doing PoC for List view; for showing horizontal scrollable list view(3 list views of  50 images each of size 5 Kb in same page).

While the performance has been good for Android, it is heavily lagging for iOS. Is there any iOS related tweak we need to apply for rad list view. Please suggest .

 

Bala

Bala
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 answered on 15 Jan 2016
1 answer
115 views

Hi team,

     I am using "RadTimeSpanPicker" to show the time but it is showing me the time for only 24 hrs. I want to show more that 400 hours. Which control I should use ?

Please help.

 

Thank you.

Ves
Telerik team
 answered on 14 Jan 2016
4 answers
156 views

Is there there a way to do a drill down into multiple levels in a values provider? For example, the values provider would show a cell with the value 'Colors' and if they selected 'Colors' it would push to another values provider with color names (red, blue, etc.)?

Also, is there a way to dynamically hide/show properties in the data form based on the values selected in a values provider and when they change? 

Adrian
Telerik team
 answered on 13 Jan 2016
2 answers
236 views

Is there anyway to change the SpanCount in the Xaml if your  using a tablet instead of a handset?

 

<telerikListView:ListViewGridLayout Orientation="Vertical" SpanCount="3" GroupHeaderLength="40">

 

3 is fine for mobile devices but for tablet 6 would make more sence. I tried OnIdiom but I don't think you can use that approach.

 

        <OnIdiom x:TypeArguments="View">
            <OnIdiom.Phone>

N Mackay
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Rank 1
 answered on 12 Jan 2016
10 answers
127 views
I'm trying to follow the examples for the iOS Xamarin TKDataForms. How do you get the value providers, say for the EncryptionLevel property in the DataFormGettingStarted example, to push to another view? I'm trying to add this to an app and mine isn't pushing to the new a view like the example is. Is there other code that is required for the push of the new view controller or is it done when I assign the value in the value provider?  
Adrian
Telerik team
 answered on 11 Jan 2016
1 answer
109 views

I know it doesn't exist but it would be really useful for financial stuff.

Just a suggestion.

Tsvyatko
Telerik team
 answered on 11 Jan 2016
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