Localize the tooltips for the match case button, the match word button and the use regular expression button.

Currently, the tooltips of the buttons are using hardcoded strings in English.

To translate the tooltips, you can get the corresponding buttons on load of the syntax editor control and replace their tooltips manually.

private void syntaxEditor_Loaded(object sender, RoutedEventArgs e)
{
	var buttons = this.syntaxEditor.ChildrenOfType<RadToggleButton>();
	var matchCaseButton = buttons.FirstOrDefault(x => x.Name == "PART_MatchCaseButton");
	var matchWordButton = buttons.FirstOrDefault(x => x.Name == "PART_MatchWordButton");
	var useRegularExpressionsButton = buttons.FirstOrDefault(x => x.Name == "PART_UseRegularExpressionsButton");

	matchCaseButton.ToolTip = CreateToolTip("SyntaxEditor_MatchCase"); // these are custom localization resource keys that should be manually defined by the developer that uses this solution
	matchWordButton.ToolTip = CreateToolTip("SyntaxEditor_MatchWord");
	useRegularExpressionsButton.ToolTip = CreateToolTip("SyntaxEditor_UseRegularExpressions");
}

private static ToolTip CreateToolTip(string resourceKey)
{
	var toolTip = new ToolTip();
	toolTip.Content = LocalizationManager.Manager.GetStringOverride(resourceKey);
	return toolTip;
}

Good morning,

can You implement in one of the next releases the regex and case sensitive search? I provided you the Visual Studio 2019 search screenshot

Single line folding regions is falsely recognized (by default it should be avoided) and messes up with outer regions.
For example
1 [

2 [ inner region]

3]

There should be no folding button on the inner line.  Collapsing line 1 does not collapse 3 but only 1 and 2 which is wrong.

When using LineHighlightTagger a NullReferenceException is thrown. To workaround this exception, you can add a custom TextFormatDefinition object to the TextFormatDefinitions collection of the RadSyntaxEditor.

this.syntaxEditor.TextFormatDefinitions.AddLast(LineHighlightTagger.LineHighlightFormatDefinition, new TextFormatDefinition(new Telerik.Windows.Controls.SyntaxEditor.UI.Pen(new SolidColorBrush(Colors.Gray), new Thickness(1))));

Shift + Alt + Down Selection then typing multiple characters results in all of them being typed in all selected lines.

Shift + Alt _ Down Selection then typing multiple characters results in only the first one being typed in all lines, then selection is lost and next chars are inserted in the last selected line only.

//using System;

//usign System.Windows.Controls;

Two consecutive lines with commented using sections result in ArgumentOutOfRangeException in SyntaxEditor with CSharpFoldingTagger.

/* and */ words are start /end words for multiline comments in C#/SQL/VB 

They should be outside strings when they form a comment block.