Last Updated: 22 Oct 2019 11:57 by ADMIN

Above the TreeView there is a Telerik.SegmentedControl, with two segments. If I click on one of the segments the ItemsSource of the TreeView gets updated by using .Add() or Remove() of the ObservableCollection.

If every Segment is called for the first time there is no problem. But if I want to clear all Items and display the empty treeView I get the following Exception.
Java.Lang.IndexOutOfBoundsException: 'Inconsistency detected. Invalid item position 0(offset:-1).state:14 md5a5af569a83c1a3f5c3a8a63bd7d39860.RadExtendedListView{c6376f1 VFED..... ........ 0,0-1200,840 #5}, adapter:com.telerik.widget.list.ListViewWrapperAdapter@b30041b,, context:md5db22775bb305bf9756607f4261793d51.MainActivity@1d6cd4f

Last Updated: 21 Oct 2019 15:18 by ADMIN

The bug can be reproduced on iOS 13 only. It is not reproducible on earlier versions of iOS. Run the attached project on iOS 13 device or Simulator to reproduce it.

Sometimes when focusing an entry and the onscreen keyboard shows up, the ListView is not scrolled correctly, so the entry is overlapped by the keyboard. The ListView layout appears messed up after that and the scrolling does not behave correctly.

Last Updated: 18 Oct 2019 11:40 by ADMIN
Created by: Prasanth
Comments: 0
Category: TabView
Type: Bug Report

When longer string is used for HeaderText the text could not be wrapped. Also the issue occurs when using Label with LineBreakMode="WordWrap" inside the TabViewHeaderItem.Content:

                <Label Text="Lorem ipsum dolor sit amet, consectetur adttert etertert erterter ipiscing elit." LineBreakMode="WordWrap"/>
        <Label Margin="10" Text="Label" />


Last Updated: 17 Oct 2019 14:11 by ADMIN
When the series data is updated and axis labels are redrawn, occasionally the default DateTime format is shown in DateTimeContinuousAxis.
Last Updated: 17 Oct 2019 10:32 by ADMIN

We have implemented chat functionality using Telerik RadChat component. The problem is that the scroll functionality doesn't scroll fully to the bottom on IOS. It randomly stops somewhere in between. The same code runs perfectly on Android. Below I have attached an example code of our solution.

          Author="{Binding Me}"
          ItemsSource="{Binding Items}"
          ItemConverter="{StaticResource SimpleChatItemConverter}" 
          SendMessageCommand="{Binding NewMessageCommand}"
          ItemTemplateSelector="{StaticResource CustomChatItemTemplateSelector}"
Last Updated: 16 Oct 2019 12:26 by ADMIN
Created by: Grant
Comments: 1
Category: Calendar & Scheduling
Type: Bug Report

I've attached a handler to the ViewChanged event of the Calendar component.

The event fires on Android but not on UWP. I've tried changing the view type using the calendar controls and also programatically but the event is not being fired.

Last Updated: 15 Oct 2019 09:34 by ADMIN

Column names in column selector are not visible in Android the first time the column selector is shown. This happens only in the case UserFilterMode is disabled. 

Last Updated: 14 Oct 2019 11:02 by ADMIN
By specification, names are an atomic symbol uniquely defined by a sequence of characters. However, when importing a document with names defined as an empty sequence a handled InvalidCastException is thrown which leads to missing page content.
Last Updated: 10 Oct 2019 13:49 by ADMIN
With Automatic LoadOnDemand, once all items are loaded and IsLoadOnDemandEnabled is set to false, when I scroll till the end the loading indicator keeps flickering on knowing that no more items are called.
Last Updated: 10 Oct 2019 08:53 by ADMIN
When you have custom ItemTemplates defined with different height, scrolling up through the items causes flickering, also you cannot scroll down to display all the items.
Last Updated: 08 Oct 2019 11:05 by ADMIN
if the swipe content of the cells are buttons, dragging the buttons up and down will keep the swiped cells in the same position of the screen, creating unexpected animations and showing the entire swipe content of the cell.
Last Updated: 08 Oct 2019 10:45 by ADMIN
When swiping a cell, the swipe content of the cell will be shown if the swipe threshold is reached.  On iOS, the swipe content of another cell can be shown immediately by swiping another cell (which is an expected behaviour).  However on Android, when the user swipes another cell, the swipe content of the other cell isn't shown (while the swipe content of the first cell becomes hidden).  The user has to swipe the other cell again to show the swipe content.
Last Updated: 08 Oct 2019 09:24 by ADMIN
If there is an input control (Editor, Entry) inside the ItemTemplate of the TreeViewDescriptor and its Text is bound to any property of the data item, changing the ItemsSource of the TreeView raises an exception of type AccessViolationException.
Last Updated: 07 Oct 2019 10:08 by ADMIN

Activating the ItemHold event of an item in a list view requires holding down an item for a while.  On a physical/virtual Android device and a virtual iOS device, this can be done by holding down the mouse/finger lightly on an item for a short period of time.  However, on a physical iOS device (I am using a physical iPhone 6s to test this), holding down the item lightly with my finger won't activate the ItemHold event, and I have to hold the item really hard on the screen in order to activate it (similar to using 3D Touch / Force Touch, and I cannot reliably activate the ItemHold event possibly because my force is sometimes not hard enough).  I noticed this behaviour on the physical iOS device since the ItemHold event got implemented in early 2018.

I created a simple application to demonstrate the issue.  The app displays an alert when the user taps/holds an item in the list view.  On a physical iOS device, holding down an item in the list view requires the user to press the item very hard on the screen.


Last Updated: 04 Oct 2019 09:48 by ADMIN
Currently IsCheckedChanged command is raised when the BindingContext of the CheckBox is updated and this is a change in the behavior compared to previous releases.
Last Updated: 02 Oct 2019 13:33 by ADMIN
Created by: Jing
Comments: 0
Category: Calendar & Scheduling
Type: Bug Report
If you set selected date range when the Calendar is loaded, the selection is not visualized.
Last Updated: 01 Oct 2019 13:04 by ADMIN
When you update the data in the chart so that the vertical axis values are changed - the annotation does not properly update and stays at the same location.

Last Updated: 30 Sep 2019 12:38 by ADMIN
If there are input controls inside the templates, updating a property of any data item though an input control ( such as Entry, NumericInput, etc),  caused the control to lose focus.
Last Updated: 26 Sep 2019 08:49 by ADMIN
Created by: Travis
Comments: 4
Category: NumericInput
Type: Bug Report

I have a Xamarin.Forms app, but I only am using it for UWP at the moment. The plan is to have Android and iOS later, but I am having issues with the RadNumericInput (Xamarin.Forms) and how the decimal key is handled.

Here is my XAML

<tkInput:RadNumericInput Grid.Row="4" Grid.Column="1" Value="{Binding Price, Mode=TwoWay}" StringFormat="{}{0:C2}" />

Right now, "Price" will default to 0. The UI will initially show $0.00 because of the StringFormat. That is working fine. When I put focus into the control, I only see 0, that is also fine. The issue is when I try to type a decimal. The value disappears and I see an issue in my Output that says -- Binding: can not be converted to type 'System.Int32'


Example steps:

  • With the value set to 0.00
  • Focus the control -- you will now see just 0
  • Press the decimal key (aka the period key)
  • Notice the error in the Output window in VS and also the control shows nothing at all
  • If you press the decimal key again, you will see two decimals in the control

**** Also, the Version of the Telerik controls I am using is -- 2019.2.603.360. The drop down below doesn't let me choose that version.

Last Updated: 19 Sep 2019 10:23 by ADMIN

If you set SelectedDate when the Calendar control is created, does not take any effect in the UI on iOS. 

As a workaround, set SelectedDate at a later stage.

1 2 3 4 5 6