I am trying to build a sample of donut series but it throws Null reference exception on Android.

I am using:

- Xamarin forms version 3.2

- Android 8.1

I have a performance problem with RadExpder. Accordion menu works faster (or it may be same because I still have not tested how I want)

I have an ObservableCollection list as my source and want to create AccordionItem for each collection item. But somehow I cannot bind what I want. I am adding my code for radaccordion and radexpander. It works with radaccordion but radaccordion seems does not have ItemSource property.

So First of all HeaderText="{Binding GroupName}"  this part gave null exception... If I delete it and write something it works but I cannot see content..

Here is the radexpander

So the radexpander is independ on the other radexpander so I created a radlistview and with binding, many expander. I did the same thing with radaccordion but the radaccordion's items always expand, it does not behave same as radexpander. Thats why I need to create one radaccordion and many items depend on my source.

I cheched your sample source but not saw any thing what I want. Is there a way to do that?

If not:then how I can collapse the radaccordion ITEM in radaccordion when there is only one AccordionItem. The code below works but I just want I can collapse the AccordionItem. (because radaccordion does not allow to collapse the item when there is only one in the radaccordion)

By the way, I still cannot bind HeaderText like HeaderText="{Binding GroupName}"  Thats why in the code, I gave a hard-coded name.

If you can help me, it would be really great. I tried to create a custom expander but the performance was same as the radexpander. Thats why I want to use radaccordion and bind my source.

Thank you

Hi,

Xamarin forms dependency donesn't recognize in telerik UI 

Error : 'telerikPrimitives' is an undeclared prefix. Line 20, position 10.
Error : 'telerikInput' is an undeclared prefix. Line 24, position 14.

Please provide me a solution.

Thanks.

Hi,

Is there a way to make a cell in telerikGrid:DataGridNumericalColumn or a customcolumn go into editmode via a single tap. 

Is it possible to have a Content Page inside a SlideView?

I have a SlideView with three ContentViews. each has Xamarin Forms controls on them. I need to reuse the code on one of the content views. What's the best way to do that? I have a page which lists items. Some of the items need to go to this ContentView and other items need to go to a new page with a copy of this ContentView. How do I make the best reuse of this code? 

Hi,

I have a RadSlideView with a Picker in the ContentView (defined in the .xaml file). I'm trying to fill the Picker with items from the .xaml.cs, but I get an  System.NullReferenceException when accessing the Picker.

How can I access a Picker inside a ContentView from .xaml.cs ?

I'm getting formatted html data i need to put into a list list view. My Web view is not displaying the format HTML. It show the html in plain text.

Here is my DataTemplate:

 <DataTemplate x:Key="ListViewItemTemplate">
                <telerikListView:ListViewTemplateCell>
                    <telerikListView:ListViewTemplateCell.View>
                        <StackLayout Padding="20">
                            <Grid>
                                <Grid.RowDefinitions>
                                    <RowDefinition Height="*"/>
                                </Grid.RowDefinitions>
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="Auto" />
                                    <ColumnDefinition Width="*" />
                                </Grid.ColumnDefinitions>

                                <Image Grid.Column="0" Grid.Row="0" Source="{Binding UserIcon}" WidthRequest="35"/>

                                <StackLayout Grid.Column="1" Grid.Row="0" Orientation="Vertical">
                                    <StackLayout Orientation="Horizontal">
                                        <Label Text="{Binding UiDisplayName}" FontFamily="SFProText#600"
                                 FontSize="17" FontAttributes="None" TextColor="#FF000000"/>
                                        <Label Text="{Binding UiTimeStamp}" FontFamily="SFProText#400" FontSize="15"
                                 FontAttributes="None" TextColor="#B36A767D" />
                                    </StackLayout>
                                    <Label Text="{Binding Content}" />
                                    <WebView HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand"
                                            Margin="0" Source="{Binding WebViewSource}" />
                                </StackLayout>
                            </Grid>
                        </StackLayout>
                    </telerikListView:ListViewTemplateCell.View>
                </telerikListView:ListViewTemplateCell>
            </DataTemplate>

Any Suggestions?

Hello

I have a parameter list which contains 75 items (I've created a custom UI element. I try to show these params in the content of RadAccordion. Unfortunately it shows only 24 items by using scroll and after 24 items, I cannot scroll.. I've tried with RadExpander, it shows 16 items. I do not give any height value. How I can increase the size? Here is my code