Hi,
you can accomplish this task easily with this
C# / VB.NET Word library that doesn't use
C# Word Interop.
Here is a sample C# code:
ComponentInfo.SetLicense("FREE-LIMITED-KEY");
var finalDocument = new DocumentModel();
foreach (string filePath in filePaths)
{
var document = DocumentModel.Load(filePath, LoadOptions.DocxDefault);
foreach (var section in document.Sections)
finalDocument.Sections.Add(finalDocument.Import(section, true));
}
finalDocument.Save("FinalDocument.docx", SaveOptions.DocxDefault);