<?xml version="1.0" encoding="utf-8" ?>
<ContentPage
    x:Class="Class"
    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    xmlns:models="clr-namespace:NameSpace.Models"
    xmlns:telerik="http://schemas.telerik.com/2022/xaml/maui"
    xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
    xmlns:vm="clr-namespace:NameSpace.ViewModels"
    Title="Demo">
    <ContentPage.BindingContext>
        <vm:NewDemoViewModel />
    </ContentPage.BindingContext>
    <ContentPage.Content>
        <ScrollView>
            <telerik:RadDataForm
                x:Name="dataForm"
                AutoGenerateItems="False"
                BindingContext="{Binding Demo}"
                ValidationMode="LostFocus">
                <telerik:DataFormGroup HeaderText="Text">
                    <telerik:DataFormRadEntryEditor PropertyName="Host" />
                    <telerik:DataFormRadEntryEditor PropertyName="Address" />
                    <telerik:DataFormRadEntryEditor PropertyName="City" />
                    <telerik:DataFormRadEntryEditor PropertyName="PostalCode" />
                    <telerik:DataFormRadEntryEditor PropertyName="PhoneNumber" />
                </telerik:DataFormGroup>
                <telerik:DataFormGroup HeaderText="Text">
                    <telerik:DataFormRadEntryEditor PropertyName="CreatedOn" />
                    <telerik:DataFormRadDatePickerEditor PropertyName="PlannedDate" />
                    <telerik:DataFormRadDatePickerEditor PropertyName="Date" />
                    <telerik:DataFormRadTimePickerEditor PropertyName="Time" />
                    <!--<telerik:DataFormRadCheckBoxEditor PropertyName="PersoDemo" />
                    <telerik:DataFormRadEntryEditor PropertyName="RSVPPage" />-->
                    <!--<telerik:DataFormRadEntryEditor PropertyName="Ambassador" />
                        <telerik:DataFormRadEntryEditor PropertyName="InternalNote" />-->
                </telerik:DataFormGroup>
            </telerik:RadDataForm>
        </ScrollView>
    </ContentPage.Content>
</ContentPage>

  <Grid>
    <telerik:RadTabView>
      
      <telerik:RadTabView.HeaderItemStyle>
        <Style TargetType="telerik:TabViewHeaderItem">
          <Setter Property="BorderColor"
                  Value="Black" />
          <Setter Property="BorderThickness"
                  Value="1" />
        </Style>
      </telerik:RadTabView.HeaderItemStyle>
      
      <telerik:TabViewItem HeaderText="General" />
      <telerik:TabViewItem HeaderText="Feed" />
      <telerik:TabViewItem HeaderText="Users (0)" />
      <telerik:TabViewItem HeaderText="Relationships (0)" />
      <telerik:TabViewItem HeaderText="Tickets (0)" />
      <telerik:TabViewItem HeaderText="Attachments (0)" />
      
    </telerik:RadTabView>
  </Grid>

  <Grid HeightRequest="400"
        WidthRequest="300">
    <telerik:RadRichTextEditor x:Name="RichTextEditorControl"
                               Source="with source text"
                               TextColor="White"
                               BackgroundColor="Green" />
  </Grid>

at System.ThrowHelper.ThrowArgumentOutOfRange_IndexMustBeLessException()

at System.Collections.Generic.List`1.get_Item(Int32 index)

at Telerik.Maui.RadScreen.GetPixelScale(DipScaleType dipScaleType)

at Telerik.Maui.Controls.RadScreenControls.GetPixelScale(VisualElement visualElement, DipScaleType dipScaleType)

at Telerik.Maui.Controls.SkiaSharp.SkiaPainter.GetPixelScale()

at Telerik.Maui.Controls.SkiaSharp.SkiaPainter..ctor(SkiaPainterCacheSettings cacheSettings)

at Telerik.Maui.Controls.Compatibility.DataGrid.MasterArranger..ctor(RadDataGrid dataGrid, NonLayoutPanel root, SkLayoutSlotProvider skLayoutSlotProvider)

at Telerik.Maui.Controls.Compatibility.DataGrid.RadDataGrid.InitArrangers()

at Telerik.Maui.Controls.Compatibility.DataGrid.RadDataGrid.Telerik.Maui.Controls.Compatibility.DataGrid.IGridView.AttachColumn(DataGridColumn column)

at Telerik.Maui.Controls.Compatibility.DataGrid.GridModel.AttachColumn(DataGridColumn column)

at Telerik.Maui.Controls.Compatibility.DataGrid.DataGridColumnCollection.AttachColumn(DataGridColumn column)

at Telerik.Maui.Controls.Compatibility.DataGrid.DataGridColumnCollection.InsertItem(Int32 index, DataGridColumn item)

at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)

at System.Reflection.MethodBaseInvoker.InvokeDirectByRefWithFewArgs(Object obj, Span`1 copyOfArgs, BindingFlags invokeAttr)

  private void OnAccept(object obj)
    {
        // implement your custom logic here
    }

<MauiVersion>8.0.20-nightly.10376</MauiVersion>

<Style TargetType="telerik:RadTimePicker">
    <Setter Property="PopupSettings">
        <Setter.Value>
            <telerik:PickerPopupSettings IsHeaderVisible="False" />
        </Setter.Value>
    </Setter>
</Style>

Name
Value
Type
◢
InnerException
{"Object reference not set to an instance of an object."}
System.Exception {System.NullReferenceException}
at Microsoft.Maui.Controls.AppThemeBinding.AppThemeProxy..ctor(Element parent, AppThemeBinding binding)
   at Microsoft.Maui.Controls.AppThemeBinding.Apply(Object context, BindableObject bindObj, BindableProperty targetProperty, Boolean fromBindingContextChanged, SetterSpecificity specificity)
   at Microsoft.Maui.Controls.BindableObject.SetBinding(BindableProperty targetProperty, BindingBase binding, SetterSpecificity specificity)
   at Microsoft.Maui.Controls.BindableObject.SetBinding(BindableProperty targetProperty, BindingBase binding)
   at Microsoft.Maui.Controls.BindableObjectExtensions.SetAppTheme[T](BindableObject self, BindableProperty targetProperty, T light, T dark)
   at Microsoft.Maui.Controls.BindableObjectExtensions.SetAppThemeColor(BindableObject self, BindableProperty targetProperty, Color light, Color dark)
   at Telerik.Maui.Controls.PickerPopupSettings.OnPopupOutsideBackgroundColorPropertyChanged(Color color)
   at Telerik.Maui.Controls.PickerPopupSettings..ctor()
   at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean wrapExceptions)