.NET Word Library - Split Word Documents in C#

using Syncfusion.DocIO;
using Syncfusion.DocIO.DLS;
// Open the Word document stream.
using (FileStream inputStream = new FileStream(@"Template.docx", FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
    // Load an existing Word document.
    using (WordDocument document = new WordDocument(inputStream, FormatType.Docx))
    {
        // Iterate through each section in the document.
        for (int i = 0; i < document.Sections.Count; i++)
        {
            // Create a new Word document for each section.
            using (WordDocument newDocument = new WordDocument())
            {
                // Add the cloned section to the new document.
                newDocument.Sections.Add(document.Sections[i].Clone());

                // Save the section as a separate Word document.
                using (FileStream outputStream = new FileStream(@"Section" + i + ".docx", FileMode.OpenOrCreate, FileAccess.ReadWrite))
                {
                    newDocument.Save(outputStream, FormatType.Docx);
                }
            }
        }
    }
}