Is there a way to programmatic way to cause a RadListView to refresh itself? 

When I navigate back to a page with a RadListView, I need the page to update. I tried overriding OnAppearing to trigger the update.

I have a ObservableCollection<T> in a VM class that inherits from NotifyPropertyChangedBase, and I call OnPropertyChanged on the VM. Even though the data in the ObservableCollection has changed, I can't get the ListView to update.

Any hints?

About a little over a year ago, there was a property introduced on the Xamarin Forms ListView called CachingStrategy, which can be set to RecycleElement. Is this built in to the RADListView? I have numerous items (60+) on 4 lists with embedded images (160x160) thumbnails in my app. When I test this on the device with decent memory, I am getting very poor performance (painting slow or not at all with the images). Here is a link to information about this property setting. I tried to set it on the RADListView but got no property found. I am using the grid layout format for the ListView.

Some performance tips are here, including use of CachingStrategy...

https://blog.xamarin.com/optimizing-xamarin-forms-apps-for-maximum-performance/

I am also using:

I trimmed down the images as best I could.

Image List 1 total size, 61 files 900KB, bit depth 8 - 160x160

Image List 2 total size, 37 files 804KB, bit depth 8 160x160

Image List 3 total size, 22 files 344KB (this is the only one that is snappy, I am guessing because it has the fewest elements), bit depth 24, 160x160

Image List 4 total size, 62 files 704KB, bit depth 8, 160x160

I also have Java Heap space set to the max 1G in the Android settings, and testing with release mode.

Also, I have to set the HeightRequest on the RADListView to something really high, like 1500 to get these images to appear on the list on first appearing.

Here is my XAML:

Any other ideas here?

Hi,

I found how to customize each item of the calendar thanks to the UpdateVisualsForCell  method.

Concerning the event, i found "EventFont" t change the font, but now i would like to set the event text on 2 lines instead if the default trail truncation.

How can I do that ?

Regards,

Fabien

Xamarin.Forms.Xaml.XamlParseException: Position 12:8. Type telerikGauges:GaugeLinearAxis not found in xmlns clr-namespace:Telerik.XamarinForms.DataVisualization.Gauges;assembly=Telerik.XamarinForms.DataVisualization

We are able to reproduce this on 2 machines now with 2 completely different Xamarin projects. The project runs normally and displays the gauge on Android, that error is only thrown with iOS.

Hi!

I'm trying and using the RadSideDrawer control in my application but I've got an UWP visualization error.

I'm setting a Grid (Layout) as the MainContent for my RadSideDrawer. Now, everything works fine with Android (I didn't get the chance to test it on iOS) but that MainContent is not displaying on UWP.

Is there any known limitation on MainContent use for UWP?

Note that:

- if I set the MainContent as a Label, it displays correctly in UWP too

- I added all the assemblies required (except the "Telerik.UI.Xaml.Primitives" dll, since what I could find in the UWP folder - UI for Xamarin R1 2017 - was the "Telerik.UI.Xaml.Primitives.UWP" dll, which I added instead) and registered all the renderers required

Thanks,

Jacopo

Hi,

I have a Xamarin Forms app with a RadListView where I want the user to be able to select an item in the list (with a tap) so I can navigate to a new page, and also reorder the list (with a long press). How can I get both to work? 

When I have both enabled, the long press causes a selection and navigates to the new page. I need the long press to allow the user to reorder the list.

Thanks,

Ron

If there is documentation for the gauges I cannot find it.

For example, how do you change the value on the gauge that an indicator is pointing at?

            gauge.Indicators.Add(new GaugeNeedleIndicator { Value = 50, Offset = 30, Position = GaugeElementPosition.Start });

So that indicator is pointing at 50, how do you change the value?