1.148 / 5.000
With the RadGridView, the binding for ItemsSource works perfectly and the data is displayed correctly. However, if I want to create a FilterDescriptor when a text box changed in the code-behind, I get a System.ArgumentException with the message 'Source type must be an enumerable type.' when executing the Add statement in the code

rgv.FilterDescriptors.Clear();

rgv.FilterDescriptors.LogicalOperator = FilterCompositionLogicalOperator.Or;

var cfd = new FilterDescriptor("columnName", FilterOperator.Contains, filterTxtBx.Text);

rgv.FilterDescriptors.Add(cfd);

with the stack trace

   at Telerik.Windows.Data.Expressions.EnumerableFilterOperatorExpressionBuilder.GenerateContainsMethodCall(Expression source, Expression value, Boolean shouldNegate)
   at Telerik.Windows.Data.Expressions.EnumerableFilterOperatorExpressionBuilder.GenerateContains(Expression left, Expression right)
   at Telerik.Windows.Data.Expressions.FilterOperatorExpressionBuilderBase.CreateExpression(Expression left, Expression right)
   at Telerik.Windows.Data.Expressions.OperatorValueFilterDescriptorExpressionBuilderBase.CreateBodyExpressionThreadSafe()
   at Telerik.Windows.Data.Expressions.OperatorValueFilterDescriptorExpressionBuilderBase.CreateBodyExpression()
   at Telerik.Windows.Data.FilterDescriptor.CreateFilterExpression(ParameterExpression parameterExpression)
   at Telerik.Windows.Data.FilterDescriptorBase.CreateFilterExpression(Expression instance)
   at Telerik.Windows.Data.Expressions.FilterDescriptorCollectionExpressionBuilder.CreateBodyExpressionThreadSafe()
   at Telerik.Windows.Data.Expressions.FilterDescriptorCollectionExpressionBuilder.CreateBodyExpression()
   at Telerik.Windows.Data.Expressions.FilterExpressionBuilder.CreateFilterExpression()
   at Telerik.Windows.Data.QueryableExtensions.Where(IQueryable source, CompositeFilterDescriptorCollection filterDescriptors)
   at Telerik.Windows.Data.QueryableCollectionView.CreateView()
   at Telerik.Windows.Data.QueryableCollectionView.CreateInternalList()
   at Telerik.Windows.Data.QueryableCollectionView.get_InternalList()
   at Telerik.Windows.Data.QueryableCollectionView.get_InternalCount()
   at Telerik.Windows.Data.QueryableCollectionView.get_IsEmpty()
   at Telerik.Windows.Data.DataItemCollection.get_IsEmpty()
   at Telerik.Windows.Controls.GridView.BaseItemsControl.OnItemsCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Controls.GridView.GridViewDataControl.OnItemsCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Controls.DataControl.OnItemsCollectionChangedDispatch(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.DataItemCollection.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.DataItemCollection.OnCollectionViewCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.Listener`2.ReceiveWeakEvent(Object sender, TArgs args)
   at Telerik.Windows.Data.WeakEvent.WeakListener`1.Handler(Object sender, TArgs args)
   at Telerik.Windows.Data.QueryableCollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
   at Telerik.Windows.Data.QueryableCollectionView.RefreshOverride()
   at Telerik.Windows.Data.QueryableCollectionView.RefreshOrDefer()
   at Telerik.Windows.Data.QueryableCollectionView.InvalidatePagingAndRefresh()
   at Telerik.Windows.Data.QueryableCollectionView.OnFilterDescriptorsChanged()
   at Telerik.Windows.Data.QueryableCollectionView.OnFilterDescriptorsCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.RadObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.ObservableItemCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at System.Collections.ObjectModel.ObservableCollection`1.InsertItem(Int32 index, T item)
   at Telerik.Windows.Data.RadObservableCollection`1.InsertItem(Int32 index, T item)
   at Telerik.Windows.Data.FilterDescriptorCollection.InsertItem(Int32 index, IFilterDescriptor item)
   at System.Collections.ObjectModel.Collection`1.Insert(Int32 index, T item)
   at System.Collections.ObjectModel.Collection`1.System.Collections.IList.Insert(Int32 index, Object value)
   at Telerik.Windows.Data.CollectionHelper.Insert(IList target, IEnumerable newItems, Int32 startingIndex, IEqualityComparer itemComparer)
   at Telerik.Windows.Data.ObservableCollectionManager.HandleCollectionChanged(IList sender, NotifyCollectionChangedEventArgs args)
   at Telerik.Windows.Data.ObservableCollectionManager.Telerik.Windows.Data.IWeakEventListener<System.Collections.Specialized.NotifyCollectionChangedEventArgs>.ReceiveWeakEvent(Object sender, NotifyCollectionChangedEventArgs args)
   at Telerik.Windows.Data.WeakEvent.WeakListener`1.Handler(Object sender, TArgs args)
   at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
   at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.RadObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at Telerik.Windows.Data.ObservableItemCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at System.Collections.ObjectModel.ObservableCollection`1.InsertItem(Int32 index, T item)
   at Telerik.Windows.Data.RadObservableCollection`1.InsertItem(Int32 index, T item)
   at Telerik.Windows.Data.FilterDescriptorCollection.InsertItem(Int32 index, IFilterDescriptor item)
   at System.Collections.ObjectModel.Collection`1.Add(T item)

But why an enumerable type is suddenly needed here is a mystery to me. Because the ItemsSource is enumerable anyway and the designer-generated data set classes for the items are not. How, above all, does he come to the strange assumption that such a type is suddenly needed here when the display has been working correctly and without problems up until then?

When Static header are enabled and few columns are fixed, 
Scenario:


1.If the Start and End Dates range are more than 1 month, the data is not exactly aligned with the Header dates after scrolling towards right.

2.If filter is applied, then the footer is displayed at very bottom. 

CustomFindReplace, SpellCheckingDialogAttribute classes are not found inside using Telerik.Windows.Documents.UI.Extensibility; after I upgraded the wpf from net framework to net core. It works in my same net framework project.

Having an issue displaying images in a radRichTextBox. Below is my HTML. 

I have using an HTMLDataProvider to bind to a string that contains this HTML below.

The image does not display, all I get is this little box for the image.

The text all displays fine above it.

 

After installing release 2022.2.511, the distinct filters of our grid views stopped working.  We are using popup filters in a custom class with both distinct checkboxes and field filters visible.  Clicking on any distinct checkbox and then clicking Apply Filter button would always filter the grid, but after the 2022.2.511 release, clicking on distinct checkboxes and clicking Apply Filter now does nothing but close the filter popup with no effect to the results.  However, if the EnableDistinctValuesFiltering property is set to true, and some text is typed in the distinct search text box, and then the checkbox is checked and Apply Filter is clicked, the filtering works.

Is there some breaking change that was made that we should know about when dealing with distinct filters in the custom popup?  Is there any settings that we can try to help resolve this issue?

Thanks, Bob

How is it possible to display main and secondary data records in a RadGridView not using the hierarchy options, but rather to design it in such a way that the main columns extend over the corresponding rows of the secondary data records via RowSpan, whereby both main and secondary data records have multiple columns?

I created a new WPF project in Visual Studio 2022 - opened the XAML, dropped a RadButton.  Nothing appeared.  Where did it go?  When I did the same steps in Visual Studio 2019 I see the button all right.

I have an RTB control and I do not want horizontal scroll bar to ever show. When a user inserts or copies in an image, I would like the image to always only ever fill the width of the RTB and never exceed it. Increasing height, is fine, vertical scrolling is acceptable in this instance.

Is this a possibility? I am able to do it with tables.

I have to react to the RadGridView's LostFocus event with a handler. Unfortunately, I discovered that the event is also triggered at unexpected times. What is particularly surprising is that scrolling with the scroll bar has no effect, but scrolling with the mouse wheel immediately calls the handler. And it does this without clicking the mouse and leaving the control. What could be the reason for this, or how can I get around it? The actual case that should be reacted to is when either another item of it is selected or the entire RadGridView loses focus by focusing on a control outside of it. Simply checking e.OriginalSource.GetType() == typeof(GridViewCell) doesn't help here either, as this is often the case when clicking on another control. And IsScrolling is also constantly false.Does anyone have any ideas?

I created a class with CommunityToolkit.Mvvm package and use ObservableProperty to create properties for this class. But the PropertyGrid  control does not recognize properties created in this way. Are there any way PropertyGrid  can support ObservableProperty?