Spire.Doc provides the ability to find the words that match a specific regular expression in a Word document and replace the matched words with a new string. This following code snippets give an example.
Step 1: Create an object of Document and load a test document.
Document doc = new Document();
doc.LoadFromFile("example.docx");
Step 2: Define a regular expression for the words that start with #.
Regex regex = new Regex(@"\#\w+\b");
Step 3: Call Document.Repalce(Regex pattern, string replace) method to replace the matched text with a new string.
doc.Replace(regex, "Spire.Doc");
Step 4: Save the file.
doc.SaveToFile("output.docx", FileFormat.Docx2013);
Result:
Full Code:
[C#]
using Spire.Doc;
using System.Text.RegularExpressions;
namespace FindText
{
class Program
{
static void Main(string[] args)
{
Document doc = new Document();
doc.LoadFromFile("example.docx");
Regex regex = new Regex(@"\#\w+\b");
doc.Replace(regex, "Spire.Doc");
doc.SaveToFile("output.docx", FileFormat.Docx2013);
}
}
[VB.NET]
Imports Spire.Doc
Imports System.Text.RegularExpressions
Namespace FindText
Class Program
Private Shared Sub Main(args As String())
Dim doc As New Document()
doc.LoadFromFile("example.docx")
Dim regex As New Regex("\#\w+\b")
doc.Replace(regex, "Spire.Doc")
doc.SaveToFile("output.docx", FileFormat.Docx2013)
End Sub
End Class
End Namespace
