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1 answer
126 views
Hello!
Your auto generated DataForms are awesome, but I need some custom functionality:

For one property I need to set an Image with the camera.
I already implemented that functionality with native xamarin forms components, but I have no idea how to integrate it in the data form.

If I refer to your BalzorGrid (Telerik UI for Balzor) Component, there is an option where I can autogenerate all base stuff and overwrite some properties to implement custom functionality.

I´m searching something like this.

Is there a way to let the main elements autogenerate and to define an other xaml code for e.g. a byte[] or a foreign key (dropdownlist with database query)?

Thank you for your support an best regards!
Nico 
Lance | Senior Manager Technical Support
Telerik team
 answered on 08 Feb 2021
1 answer
1.0K+ views

I'm using RadPdfViewer control to show pdf document in our Xamarin form app. The app is working fine on Android(device and Simulator) and also on iOS simulator.
But App is crashing on iPhone device while launching the app. I'm getting the below error

 

Failed to force load assembly Telerik.XamarinForms.DataGrid.dll. Type:Telerik.XamarinForms.DataGrid.DataGridLocalizationManager.

Exception: 'You MUST call Xamarin.Forms.Init(); prior to using it.'. Callstack: '  at Xamarin.Forms.Device.get_PlatformServices () [0x00007] in D:\a\1\s\Xamarin.Forms.Core\Device.cs:87 
  at Xamarin.Forms.Device.get_RuntimePlatform () [0x00000] in D:\a\1\s\Xamarin.Forms.Core\Device.cs:57 
  at Telerik.XamarinForms.Common.RadDevice..cctor () <0x10c1fc1c8 + 0x00002> in <81c15264f2164ef79a02e84ed79e8bfd>:0

If I comment out the <telerikPdfViewer:RadPdfViewer x:Name="pdfViewer" /> control in the .xaml file the app loads properly

I have tried the solution provided on TelerikForm.Init() but it's not worked for me.
Lance | Senior Manager Technical Support
Telerik team
 answered on 02 Feb 2021
4 answers
337 views

I have a need in my application to allow users to annotate images (basically drawing on top of an image to call attention to something in the image).  I am accomplishing this now using SkiaSharp, however I am wondering if this is something that is possible or is on the roadmap for the ImageEditor control?

Thanks,
Greg

Didi
Telerik team
 answered on 28 Jan 2021
1 answer
187 views

Hi. I have a question I am using a SlideView in Xamarin Forms (vs 4.8.0.1821) and Telerik (2020.2.624.1), but I have a problem when it is to display the images on the Android I get the following error:

ImageLoader SourceHandler: Could not retrieve image or image data was invalid: Uri (Does not load images in SlideView)

I need to enable some special permission or because I cannot view the images. In the iOS they are displayed normally but the android is the problem, if you can help me solve this problem. Beforehand thank you very much.

Didi
Telerik team
 answered on 28 Jan 2021
1 answer
408 views
Hello!
Is it possible to display multiple content pages on one slidevliew page?
I want to build an image galery where you can see multiple images like Apple´s CoverFlow.

Best regards,
Nico
Yana
Telerik team
 answered on 27 Jan 2021
4 answers
65 views
System.ArgumentException: The parameter is incorrect.
value
   at Windows.UI.Xaml.UIElement.ReleasePointerCapture(Pointer value)
   at Telerik.UI.Xaml.Controls.Primitives.DragDrop.DragDropOperation.DragVisualHost_PointerReleased(Object sender, PointerRoutedEventArgs e)

Hello,
In the logs from customer devices, we found this exception. Any pointers on how to fix this?

Thank you.


Didi
Telerik team
 answered on 27 Jan 2021
2 answers
132 views
In UWP apps, is there a way to add support for scrolling through the items via using a mouse wheel?
Neil N
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 answered on 25 Jan 2021
1 answer
149 views

HI folks.

 

I am using the rad list view with grouping in my application. There are some cases when the list has empty groups (That's ok because according to the application's logic I can move items between groups). The problem is that the empty group it's not actually "Empty". It has a blank item which is not desirable behavior for me. I have a list view "item tapped" event which navigates the user to the details screen and when I tap on the empty group's item the application throws an exception because the list item is blank. I have attached a sample app according to this example  and GIF files showing the issue.

 

Didi
Telerik team
 answered on 25 Jan 2021
4 answers
122 views

I need an OnAppointmentChanged or OnAppointmentAdded event to be able to save the change or the new appointment.

I could not find such events. How to achieve this goal?

Kaan
Top achievements
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 answered on 14 Jan 2021
1 answer
566 views
Hello , i have this Rad combobox 

<telerikInput:RadComboBox
                                                  x:Name="PickerFilter"
                                                  DropDownBackgroundColor="{StaticResource AppMainColor}" 
                                                  IsClearButtonVisible="False" 
                                                  BorderColor="{StaticResource AppMainColor}" 
                                                  FocusedBorderColor="{StaticResource AppMainColor}" 
                                                  BackgroundColor="{StaticResource AppMainColor}" 
                                                  HorizontalOptions="CenterAndExpand"
                                                  VerticalOptions="Center" 
                                                  TextColor="#FFFFFF"
                                                  FontFamily="Roboto-Regular"
                                                  ItemsSource="{Binding FilterSource}"
                                                  SelectedItem="{Binding SelectedFilter,Mode=TwoWay}"  
                                                  FontSize="14" 
                                                  WidthRequest="220"
                                                  HeightRequest="42" 
                                                  CornerRadius="20">![](https://us.v-cdn.net/5019960/uploads/editor/6n/c3e070zodcqd.png "")

I want to change dropdown background from gray to blue and foreground from black to white (look to the screenshot)

Yana
Telerik team
 answered on 12 Jan 2021
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