此 Demo 展示如何在 Word 文档中搜索文本并高亮显示匹配的文本。

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

namespace DemoOnlineCode
{
    class FindAndHighlight
    {
        public void demoFindAndHighlight(String docFile, String searchText)
        {
            Document document = new Document(docFile, FileFormat.Auto);

            TextSelection[] textSelections
                = document.FindAllString(searchText, false, false);
            if (textSelections != null)
            {
                foreach (TextSelection selection in textSelections)
                {
                    TextRange textMatched = selection.GetAsOneRange();
                    textMatched.CharacterFormat.HighlightColor = Color.Yellow;
                }
            }

            document.SaveToFile("demo.doc", FileFormat.Doc);
        }
    }
}

Imports System.Drawing
Imports Spire.Doc
Imports Spire.Doc.Documents
Imports Spire.Doc.Fields

Namespace DemoOnlineCode
    Class FindAndHighlight
        Public Sub demoFindAndHighlight(docFile As [String], searchText As [String])
            Dim document As New Document(docFile, FileFormat.Auto)

            Dim textSelections As TextSelection() = document.FindAllString(searchText, False, False)
            If textSelections IsNot Nothing Then
                For Each selection As TextSelection In textSelections
                    Dim textMatched As TextRange = selection.GetAsOneRange()
                    textMatched.CharacterFormat.HighlightColor = Color.Yellow
                Next
            End If

            document.SaveToFile("demo.doc", FileFormat.Doc)
        End Sub
    End Class
End Namespace