Table of Contents

Property Outlining



Represents an object that implements IOutlining interface that specifies appearance and behavior of outline sections within the control.

public IOutlining Outlining { get; }

Property Value



Here is how to use a Outlining in the C# code:

using Alternet.Syntax.Parsers.Roslyn;
public partial class MainWindow : Window
    private void Window_Loaded(object sender, RoutedEventArgs e)
        var textEditor = new Alternet.Editor.Wpf.TextEditor();
        textEditor.Outlining.AllowOutlining = true;
        textEditor.Outlining.OutlineOptions = OutlineOptions.DrawOnGutter | OutlineOptions.DrawLines | OutlineOptions.DrawButtons | OutlineOptions.ShowHints;
        textEditor.Lexer = new CsParser();

Here is how to use a Outlining in the Visual Basic code:

Imports Alternet.Syntax.Parsers.Roslyn

Partial Public Class MainWindow

    Private Sub Window_Loaded(ByVal sender As Object, ByVal e As RoutedEventArgs)
        Dim textEditor = New Alternet.Editor.Wpf.TextEditor()
        textEditor.Outlining.AllowOutlining = True
        textEditor.Outlining.OutlineOptions = OutlineOptions.DrawOnGutter Or OutlineOptions.DrawLines Or OutlineOptions.DrawButtons Or OutlineOptions.ShowHints
        textEditor.Lexer = New CsParser()
    End Sub
End Class


Outline regions allow hiding some text from the view by collapsing a region of code so that it appears under a plus sign (+). You expand a collapsed region by clicking the plus\minus sign.

AllowOutlining property determines whether outlining is enabled in the TextEditor control.

Outline sections are typically provided by SyntaxParser object.