Find and Highlight Text in Word in WPF

Word Find function can enable users to search for specific text or phrase quickly. Generally speaking, the found text will be highlighted automatically in order to distinguish from other contents. Also, users can format found text, such as set it as italic, bold etc.

Spire.Doc for WPF, a professional WPF component on manipulating Word, enables users to find and highlight text in Word with WPF. With this Word WPF component, developers can invoke doc.FindAllString(text string, bool caseSensitive, bool wholeWord) method directly to find text in Word. And for highlighting found text, developers need Firstly, use TextSelection, the class Spire.Doc for WPF provides, to save found string. Then, use foreach sentence to get each selection in this TextSelection. Finally, set HighlightColor, one properties of TextRange.CharacterFormat, for text in selection.

Below, the screenshot shows a Word document whose specified text has be found and highlighted.

Find and Highlight Word Text

Download and install Spire.Doc for WPF and then use the codes below to Find and Highlight Text in Word

Code Sample:

using Spire.Doc;
using Spire.Doc.Documents;
using System.Drawing;
using System.Windows;

namespace WpfApplication1
    public partial class MainWindow : Window
        public MainWindow()
        private void button1_Click(object sender, RoutedEventArgs e)

            //Load Document
            Document doc = new Document();
            doc.LoadFromFile(@"E:\work\Documents\A GOOD MAN IS HARD TO FIND.docx");

            //Find Text
            TextSelection[] textSelections = doc.FindAllString("Bailey", true, true);

            //Highlight Text
            foreach (TextSelection selection in textSelections)
                selection.GetAsOneRange().CharacterFormat.HighlightColor = Color.Green;

            //Save Document
            doc.SaveToFile("FindText.docx", FileFormat.Docx2010);

Imports Spire.Doc
Imports Spire.Doc.Documents
Imports System.Drawing
Imports System.Windows

Namespace WpfApplication1
	Public Partial Class MainWindow
		Inherits Window
		Public Sub New()
		End Sub
		Private Sub button1_Click(sender As Object, e As RoutedEventArgs)

			'Load Document
			Dim doc As New Document()
			doc.LoadFromFile("E:\work\Documents\A GOOD MAN IS HARD TO FIND.docx")

			'Find Text
			Dim textSelections As TextSelection() = doc.FindAllString("Bailey", True, True)

			'Highlight Text
			For Each selection As TextSelection In textSelections
				selection.GetAsOneRange().CharacterFormat.HighlightColor = Color.Green

			'Save Document
			doc.SaveToFile("FindText.docx", FileFormat.Docx2010)
		End Sub

	End Class
End Namespace

Spire.Doc is a Microsoft Word component, which enables users to perform a wide range of Word document processing tasks directly, such as generate, read, write and modify Word document in WPF, .NET and Silverlight.