Null reference exception occurs with maui 10.0.90
Just add the datagrid definition in xaml or code behind and exception occurs.
Stack-trace:
at Microsoft.Maui.Controls.BindableObject.ApplyBindings(Boolean fromBindingContextChanged)
at Microsoft.Maui.Controls.BindableObject.SetInheritedBindingContext(BindableObject bindable, Object value)
at Microsoft.Maui.Controls.Element.SetChildInheritedBindingContext(Element child, Object context)
at Microsoft.Maui.Controls.TemplatedPage.SetChildInheritedBindingContext(Element child, Object context)
at Microsoft.Maui.Controls.Element.SetLogicalChildBindingContext(BindableObject child, Object bc)
at Microsoft.Maui.Controls.BindableObjectExtensions.PropagateBindingContext[T](BindableObject self, IEnumerable`1 children, Action`2 setChildBindingContext)
at Microsoft.Maui.Controls.Element.OnBindingContextChanged()
at Microsoft.Maui.Controls.VisualElement.OnBindingContextChanged()
at Microsoft.Maui.Controls.Page.OnBindingContextChanged()
at Microsoft.Maui.Controls.ContentPage.OnBindingContextChanged()
at Microsoft.Maui.Controls.BindableObject.BindingContextPropertyChanged(BindableObject bindable, Object oldvalue, Object newvalue)
at Microsoft.Maui.Controls.BindableObject.OnBindablePropertySet(BindableProperty property, Object original, Object value, Boolean didChange, Boolean willFirePropertyChanged)
at Microsoft.Maui.Controls.Element.OnBindablePropertySet(BindableProperty property, Object original, Object value, Boolean changed, Boolean willFirePropertyChanged)
at Microsoft.Maui.Controls.BindableObject.SetValueActual(BindableProperty property, BindablePropertyContext context, Object value, Boolean currentlyApplying, SetValueFlags attributes, SetterSpecificity specificity, Boolean silent)
at Microsoft.Maui.Controls.BindableObject.SetValueCore(BindableProperty property, Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes, SetterSpecificity specificity)
at Microsoft.Maui.Controls.BindableObject.SetValue(BindableProperty property, Object value)
at Microsoft.Maui.Controls.BindableObject.set_BindingContext(Object value)
provide support for : narrator and voice over
and the screen reader should announcing:
Allow for up/down arrows to step up/down the time element with the keyboard cursor. For example, if I have my keyboard cursor on the hours of a time, then pressing up would increase the hour by 1.
Keyboard support for the dropdown... Space to open, tab and/or arrows to cycle through and change the date/time.
You cannot swipe along with the content when navigation to another item. You have to swipe outside of the content. Video is attached
Workaround:
Use the navigation buttons for navigating to another view.
<telerik:RadSlideView x:Name="slideView"
NavigationButtonsVisibility="Visible"
Hello,
it would be a very useful information when subscribing to the DataBindingComplete Command of a DataGrid to know whether for example a filter, sort, grouping had changed.
Currently, it is an internal Property
Regards
I received the following stack traces when using aggregates and
Exception Message:
Object reference not set to an instance of an object
Exception Stack:
at Telerik.Maui.Data.ParallelDataEngine.Telerik.Maui.Data.IDataEngine.RebuildAggregatesForItem(Object item, String propertyName)
at Telerik.Maui.Data.LocalDataSourceProvider.ProcessPropertyChangedOverride(Object sender, PropertyChangedEventArgs args)
at Telerik.Maui.Data.LocalDataSourceProvider.DataView_ItemPropertyChanged(Object sender, PropertyChangedEventArgs e)
at Telerik.Maui.Data.EnumerableDataSourceView.Telerik.Maui.IWeakEventListener.ReceiveEvent(Object sender, Object args)
at Fmr.Sirius.ComponentModel.ObservableObject.FirePropertyChanged(IEnumerable`1 propertyChanges)
at System.Reactive.AnonymousSafeObserver`1.OnNext(T value)
at System.Reactive.Concurrency.AsyncLock.Wait(Object state, Delegate delegate, Action`2 action)
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.TimerQueueTimer.System.Threading.IThreadPoolWorkItem.Execute()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()
at System.Threading.Thread.StartCallback()
Exception.Stack 2:
at Telerik.Maui.Data.ParallelDataEngine.Telerik.Maui.Data.IDataEngine.RebuildAggregatesForItem(Object item, String propertyName)
at Telerik.Maui.Data.LocalDataSourceProvider.ProcessPropertyChangedOverride(Object sender, PropertyChangedEventArgs args)
at Telerik.Maui.Data.LocalDataSourceProvider.DataView_ItemPropertyChanged(Object sender, PropertyChangedEventArgs e)
at Telerik.Maui.Data.EnumerableDataSourceView.Telerik.Maui.IWeakEventListener.ReceiveEvent(Object sender, Object args)
at Fmr.Sirius.ComponentModel.ObservableObject.FirePropertyChanged(IEnumerable`1 propertyChanges)
at System.Reactive.AnonymousSafeObserver`1.OnNext(T value)
at System.Reactive.Linq.ObservableImpl.Sample`1._.Tick()
at System.Reactive.Concurrency.DefaultScheduler.PeriodicallyScheduledWorkItem`1.<>c.<Tick>b__5_0(PeriodicallyScheduledWorkItem`1 closureWorkItem)
at System.Reactive.Concurrency.AsyncLock.Wait(Object state, Delegate delegate, Action`2 action)
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.TimerQueueTimer.System.Threading.IThreadPoolWorkItem.Execute()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()
at System.Threading.Thread.StartCallback()
A NullReferenceException may occur during the DataGrid cell measure phase. The issue appears to happen when the cells are being generated or prepared for layout:
at Telerik.Maui.Controls.DataGrid.CellsController`1.GenerateCellsForRow(IItemInfoNode rowModel, Int32 rowSlot)