58 lines
1.8 KiB
C#
58 lines
1.8 KiB
C#
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Apply Syntax Highlighting in a Text Control
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<Window x:Class="WpfApplication1.Window1"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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Title="Window1" Height="500" Width="700">
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<Grid>
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<RichTextBox x:Name="rtbTextContent" TextChanged="RichTextBox_TextChanged" />
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</Grid>
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</Window>
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//File:Window.xaml.cs
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Documents;
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using System.Windows.Media;
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namespace WpfApplication1
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{
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public partial class Window1 : Window
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{
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public Window1()
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{
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InitializeComponent();
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}
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private void RichTextBox_TextChanged(object sender, TextChangedEventArgs e)
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{
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TextRange textRange = new TextRange(rtbTextContent.Document.ContentStart, rtbTextContent.Document.ContentEnd);
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rtbTextContent.TextChanged -= RichTextBox_TextChanged;
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textRange.ClearAllProperties();
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ApplyFormatting();
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rtbTextContent.TextChanged += RichTextBox_TextChanged;
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}
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private void ApplyFormatting()
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{
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TextPointer tp = rtbTextContent.Document.ContentStart;
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tp = FindNextString(tp);
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TextPointer textRangeEnd = tp.GetPositionAtOffset(1, LogicalDirection.Forward);
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TextRange tokenTextRange = new TextRange(tp, tp.GetPositionAtOffset(1, LogicalDirection.Forward));
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tokenTextRange.ApplyPropertyValue(TextElement.ForegroundProperty, Brushes.Blue);
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}
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private TextPointer FindNextString(TextPointer tp)
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{
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char[] buffer = new char[1];
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tp.GetTextInRun(LogicalDirection.Forward, buffer, 0, 1);
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return tp;
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}
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}
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}
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