One of the following two exceptions occur when the BindingOperations.EnableCollectionSynchronization() is used with the ItemsSource of RadTreeListView:

• System.InvalidOperationException: 'Collection was modified; enumeration operation may not execute.'
  
• System.NullReferenceException: 'Object reference not set to an instance of an object.'

When using the EnableCollectionSynchronization, the corresponding items control should allow updates of the ItemsSource collection on different threads. This is valid if the requirements to use the EnableCollectionSynchronization method are met.

The exception stack traces are:

InvalidOperationException
   at System.ThrowHelper.ThrowInvalidOperationException_InvalidOperation_EnumFailedVersion() in /_/src/libraries/System.Private.CoreLib/src/System/ThrowHelper.cs:line 432
   at System.Collections.Generic.List`1.Enumerator.MoveNext() in /_/src/libraries/System.Private.CoreLib/src/System/Collections/Generic/List.cs:line 1130
   at System.Linq.Enumerable.SelectEnumerableIterator`2.MoveNext()
   at Telerik.Windows.Data.EnumerableExtensions.<SelectRecursive>d__15`1.MoveNext()
   at System.Linq.Enumerable.SelectEnumerableIterator`2.MoveNext()
   at Telerik.Windows.Data.HierarchicalCollectionViewBase.PopulateInternalList(IQueryable view)
   at Telerik.Windows.Data.QueryableCollectionView.get_InternalList()
   at Telerik.Windows.Data.HierarchicalCollectionViewBase.get_InternalCount()
   at Telerik.Windows.Data.DataItemCollection.get_Item(Int32 index)
   at Telerik.Windows.Controls.GridView.Rows.GetRowItemsAtRange(Int32 startIndex, Int32 endIndex)
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.RealizeRows(Int32 startIndex, Int32 endIndex, Double& verticalOffset, HashSet`1& realizedRows)
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.MeasureOverride(Size availableSize)
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.MeasureOverride(Size availableSize)

NullReferenceException
   at Telerik.Windows.Data.QueryableCollectionView.InternalGetItemAt(Int32 index) in Telerik.Windows.Data\QueryableCollectionView.cs:line 3081
   at Telerik.Windows.Controls.GridView.Rows.GetRowItemsAtRange(Int32 startIndex, Int32 endIndex)
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.RealizeRows(Int32 startIndex, Int32 endIndex, Double& verticalOffset, HashSet`1& realizedRows)
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.MeasureOverride(Size availableSize)
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.MeasureOverride(Size availableSize)

To work this around dispatch the updates of the ItemsSource collection to the main UI thread.

 Dispatcher.BeginInvoke(new Action(() =>
 {
    // add/remove items from the source collection
 }));

Pasting an invalid range of dates in the RadDateRangePicker, for example, "ABC", raises an exception.

To work around this behavior, you could subscribe to the Loaded event of RadDateRangePicker and retrieve the DateRangeMaskedInput element via the visual tree helper methods. Then, subscribe to its ValueChanging event and check whether the NewValue property of the event arguments contains any letters or characters that are not valid. If it does, set the Handled property to True.

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();

        this.dateRangePicker.Loaded += DateRangePicker_Loaded;
    }

    private void DateRangePicker_Loaded(object sender, RoutedEventArgs e)
    {
        DateRangeMaskedInput dateRangeMaskedInput = this.dateRangePicker.FindChildByType<DateRangeMaskedInput>();

        if (dateRangeMaskedInput != null)
        {
            dateRangeMaskedInput.ValueChanging += DateRangeMaskedInput_ValueChanging;
        }
    }

    private void DateRangeMaskedInput_ValueChanging(object? sender, Telerik.Windows.Controls.MaskedInput.RadMaskedInputValueChangingEventArgs e)
    {
        if (e.NewValue.ToString().Any(char.IsLetter))
        {
            e.Handled = true;
        }
    }
}

RichTextBox: Bullet list with several levels is not viewed correctly in WordPad. 

In Word, this works as expected. When the document is imported into RadRichTextBox, this works as well.

Bold/Italic does not work for some font styles.

This might be a framework limitation in WPF: https://www.telerik.com/forums/some-fonts-are-not-able-to-bold-italic

Sample fonts list:

1. Tw Cen MT Condensed Extra Bold (bold/italic)
   
2. Tw Cen MT Condensed (bold/italic)
   
3. Sitka Text Semibold (italic)
   
4. Sitka Subheading Semibold (italic)
   
5. Sitka Small Semibold (italic)
   
6. Sitka Heading Semibold (italic)
   
7. Sitka Display Semibold (italic)
   
8. Sitka Banner Semibold (italic)
   
9. Segoe UI Variable Text Semibold (italic)
   
10. Segoe UI Variable Text Light (bold/italic)
    
11. Segoe UI Variable Display Light (bold/italic)
    
12. Segoe UI Semilight (bold/italic)
    
13. Segoe UI Semibold (bold/italic)
    
14. Segoe UI Light (bold/italic)
    
15. Segoe UI Black (italic)
    
16. Script MT Bold (bold/italic)
    
17. Rockwell Condensed (bold/italic)
    
18. Rockwell Extra Bold (italic)
    
19. Rage Italic (bold/italic)
    
20. OCR A Extended (bold/italic)
    
21. Nirmala UI Semilight (bold/italic)
    
22. Microsoft YaHei UI Light (bold/italic)
    
23. Microsoft YaHei Light (bold/italic)
    
24. Microsoft JhengHei UI Light (bold/italic)
    
25. Microsoft JhengHei Light (bold/italic)
    
26. Malgun Gothic Semilight (bold/italic)
    
27. Leelawadee UI Semilight (bold/italic)
    
28. Gloucester MT Extra Condensed (bold/italic)
    
29. Gill Sans Ultra Bold Condensed (bold/italic)
    
30. Gill Sans Ultra Bold (bold/italic)
    
31. Gill Sans MT Ext Condensed Bold (bold/italic)
    
32. Gill Sans MT Condensed (bold/italic)
    
33. Franklin Gothic Medium Cond (bold/italic)
    
34. Franklin Gothic Heavy (bold/italic)
    
35. Franklin Gothic Medium (bold/italic)
    
36. Franklin Gothic Demi (bold/italic)
    
37. Franklin Gothic Demi Cond (bold/italic)
    
38. Franklin Gothic Book (bold/italic)
    
39. Dubai Medium (bold/italic)
    
40. Dubai Light (bold/italic)
    
41. Corbel Light (bold/italic)
    
42. Copperplate Gothic Light (bold/italic)
    
43. Copperplate Gothic Bold (bold/italic)
    
44. Cooper Black (bold/italic)
    
45. Cascadia Mono SemiLight (bold/italic)
    
46. Cascadia Mono SemiBold (italic)
    
47. Cascadia Mono Light (bold/italic)
    
48. Cascadia Code SemiLight (bold/italic)
    
49. Cascadia Mono ExtraLight (bold/italic)
    
50. Cascadia Code SemiBold (italic)
    
51. Cascadia Code Light (bold/italic)
    
52. Cascadia Code ExtraLight (bold/italic)
    
53. Candara Light (bold/italic)
    
54. Calibri Light (bold/italic)
    
55. Britannic Bold (bold/italic)
    
56. Bodoni MT Condensed (bold/italic)
    
57. Bodoni MT Black (italic)
    
58. Bernard MT Condensed (bold/italic)
    
59. Bahnschrift SemiLight Condensed (bold/italic)
    
60. Bahnschrift SemiLight SemiConde (bold/italic)
    
61. Bahnschrift SemiLight (bold/italic)
    
62. Bahnschrift SemiBold (bold/italic)
    
63. Bahnschrift SemiBold SemiConden (bold/italic)
    
64. Bahnschrift SemiCondensed (bold/italic)
    
65. Bahnschrift SemiBold Condensed (bold/italic)
    
66. Bahnschrift Light Condensed (bold/italic)
    
67. Bahnschrift Light  (bold/italic)
    
68. Bahnschrift Condensed (bold/italic)
    
69. Arial Rounded MT Bold (bold/italic)
    
70. Arial Narrow (bold/italic)
    
71. Arial Black (italic)

Currently, the RadFileDialogs components show folder shortcuts, however, they are not fully supported. More specifically, interacting with them, such as mouse-double click, does not navigate to the respective folder.

In the meantime, this behavior can be achieved by subscribing to the Loaded event of the used file dialog type, in order to retrieve and cache the ExplorerControl in a field or a property. Then, you could subscribe to the PreviewMouseDoubleClick event of the used file dialog type and check whether the DataContext of the e.OriginalSource property is of the type of FileInfoWrapper. If it is and its IsShortcut property is true, set the CurrentDirectoryPath property of the cached ExplorerControl to the ShortcutLocation property of the FileInfoWrapper object.

The following code snippets showcase this approach when using the RadSaveFileDialog type:

//Caching the ExplorerControl instance
private ExplorerControl explorerControl;

//Retrieving the ExplorerControl instance
private void SaveFileDialog_Loaded(object sender, RoutedEventArgs e)
{
    RadSaveFileDialog radSaveFileDialog = (RadSaveFileDialog)sender;

    ExplorerControl explorerControl = radSaveFileDialog.ChildrenOfType<ExplorerControl>().FirstOrDefault();

    if (explorerControl != null)
    {
        this.explorerControl = explorerControl;
    }
}

//Navigation logic on double click of a shortcut
private void SaveFileDialog_PreviewMouseDoubleClick(object sender, MouseButtonEventArgs e)
{
    FrameworkElement frameworkElement = e.OriginalSource as FrameworkElement;

    if (frameworkElement != null)
    {
        FileInfoWrapper fileInfoWrapper = frameworkElement.DataContext as FileInfoWrapper;

        if (fileInfoWrapper != null)
        {
            if (fileInfoWrapper.IsShortcut)
            {
                RadSaveFileDialog radSaveFileDialog = (RadSaveFileDialog)sender;

                this.explorerControl.CurrentDirectoryPath = fileInfoWrapper.ShortcutLocation;

                e.Handled = true;
            }
        }
    }
}

Hi Team,

I have set up SSO and it's great so far. I have a feature request that would make it even better, and solve many large enterprise needs, is to have a way to integrate SCIM based license provisioning as well.

Right now, you still do need to manage licensed users on the Manage Licensed Users portal. A License Holder or License Manager needs to add a Developer to the account and assign them a license.

With SCIM integration, we could better manage the users and licensing on a larger scale, with automation and oversight on the enterprise-managed SSO identity.

Thank you,

Kevin

I do have some feedback on this component. I love it, but of course there are some areas where improvement can be made. For instance, in the screenshot below, I have highlighted some words where improvement can be made.

1. ‘1,2,3,5’ – Literals in SSMS are Red
2. ‘ER – 100% OF MEDICARE’ – OF is highlighted in Blue. It is contained in a literal and shouldn’t be highlighted
3. ISNULL – Is a function and should be highlighted in Blue