When the control is inside ScrollViewer and you click it, focus is lost and caret disappears. Some controls have built in ScrollViewer , for example LayoutControl so placing the editor in LayoutControl also leads to the same issue.

Generally placing the syntaxeditor in scrollviewer is risky for the vertical virtualization so at least a height should be set to the control. In R2 2020 SP, an exception will be thrown if Syntax Editor with no height is added in scroll viewer or stack panel or other panel which measures vertically with infinity.

Workaround for this issue:

        private void syntaxEditor_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            e.Handled = true;
        }

For example:

some text // some comment

some text 2 // some comment 2

Specified argument was out of the range of valid values.
Parameter name: span

 

StackTrace:

at Telerik.Windows.SyntaxEditor.Core.Text.DataStructures.ConcatenationRopeNode.GetText(Span span) in C:\WPF_Scrum\Current\Controls\SyntaxEditor\SyntaxEditor.Core\Text\DataStructures\ConcatenationRopeNode.cs:line 140
   at Telerik.Windows.SyntaxEditor.Core.Text.TextSnapshot.GetText(Span span) in C:\WPF_Scrum\Current\Controls\SyntaxEditor\SyntaxEditor.Core\Text\TextSnapshot.cs:line 118
   at Telerik.Windows.Controls.SyntaxEditor.Taggers.CSharpFoldingTagger.GetFoldingRegionTitle(String inputValue, Span span, String startText) in C:\WPF_Scrum\Current\Controls\SyntaxEditor\SyntaxEditor\Taggers\Folding\CSharpFoldingTagger.cs:line 202

SyntaxEditor is in RadListBoxItem.

Entering space key does not produce text change and gets the focus lost our of the editor.

Workaround:

    private void RadSyntaxEditor_PreviewKeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Space)
            {
                (sender as RadSyntaxEditor).Insert(" ");
                e.Handled = true;
            }
        }

SyntaxEditor showing XML/Html/XAML File and XMlFoldingTagger is registered.

Deleting the last bracket symbol ">" results in exception in XMLFoldingTagger.cs

Currently the strings are not colored in C#, VB, JS documents working with CSharpTagger, JavaScriptTagger, VisualBasicTagger. Make the strings colored out of the box.

If secondary wpf window is opened in an application, the enter key does not work in SyntaxEditor. It does not produce new line as expected.

Hello,

When we resize the syntaxEditor control, the folding buttons moved. You can reproduce this isssue in your demos.

 

1. Reduce the contents of the sample
2. Increase the size of sample window and see the buttons are not besides the line

 

Best regards,

Introduce a property to control whether the matching of the start and end folding tags is case sensitive or not.

Foldings are incorrect when there is a missing open or close tag.

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

---- - It looks like that the tagger is only looking for 2 – only. If there are more than 2 in sequence, it doesn’t identify it as a comment and should

We could create intellisense similar to Visual Studio.

'Cannot find resource named 'DragVisualStyle' error occurs in in the error list when using implicit styles.

Add support for using right-to-left characters. This includes.
    - typing from right to left
    - proper selection, navigation between RTL chars
    - proper insert, delete, cut, copy, paste operations (modifications) sign

A message could be shown when using the Find mechanism, and you reach the end of the file or the starting point of the search. 

Python is one of the most important scripting languages. It would be nice if this language was supported by default.

Add dependency property for showing/hiding the line numbers on the left of the source code.

If you have an XML attribute with a string value, but the value is not fully rendered into the viewport, its color defaults to black, instead of the expected blue color.

To work this around, you can create a custom XmlTagger and override its GetTags() method. This will allow you to properly catch the string value and return it as a tag span element with its ClassificationType set to "string".

Add separate folding tagger class for creating folding (collapsible) regions in XML, XAML, HTML code files.

Add ability to disable horizontal scrollbar and enable word wrapping - fixed width of editor and if the word cannot fit - it is moved to next line.