How to find and replace text in heading paragraphs in a Word document

Syncfusion Essential DocIO is a .NET Word library used to create, read, edit, and convert Word documents programmatically without Microsoft Word or interop dependencies. Using this library, you can find and replace text in heading paragraphs in a Word document using C#.

Steps to find and replace text in heading paragraphs in a Word document:

1. Create a new .NET Core console application project.
2. Install the Syncfusion.DocIO.Net.Core NuGet package as a reference to your project from NuGet.org.
   
   

3. Include the following namespaces in Program.cs file.
   C#

using Syncfusion.DocIO.DLS;
using Syncfusion.DocIO; 

4. Use the following code example to find and replace text in heading paragraphs in a Word document.
   C#

using (FileStream inputFileStream = new FileStream(Path.GetFullPath(@"Data/Input.docx"), FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
   //Opens the input Word document.
   using (WordDocument document = new WordDocument(inputFileStream, FormatType.Automatic))
   {
       for (int headingLevel = 1; headingLevel < 10; headingLevel++)
       {
           //Get all heading paragraphs based on the heading style level.
           List<Entity> headings = document.FindAllItemsByProperty(EntityType.Paragraph, "StyleName", "Heading " + headingLevel);
           //Iterate through all headings in the list.
           for (int index = 0; index < headings.Count; index++)
           {
               //Cast the current heading to WParagraph.
               WParagraph paragraph = headings[index] as WParagraph;
               //Remove all child elements from the paragraph.
               paragraph.ChildEntities.Clear();
               //Add new text to replace the heading content.
               paragraph.AppendText("Replaced Heading" + headingLevel + " text");
           }
       }
       using (FileStream outputFileStream = new FileStream(Path.GetFullPath(@"Output/Result.docx"), FileMode.Create, FileAccess.ReadWrite))
       {
           //Saves the Word document to file stream.
           document.Save(outputFileStream, FormatType.Docx);
       }
   }
} 

You can download a complete working sample to find and replace text in heading paragraphs in a Word document from the GitHub.

By executing the program, you will get the Word document as follows.

Conclusion

I hope you enjoyed learning about how to find and replace text in heading paragraphs in a Word document.

You can refer to our ASP.NET Core DocIO feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our ASP.NET Core DocIO example to understand how to create and manipulate data.

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