Convert MS Project MPP to Word Document (DOC/DOCX) using C# | https://blog.aspose.com/2021/08/13/convert-ms-project-mpp-to-word-document-doc-docx-using-csharp/

01_Convert_MS_Project_MPP_to_Word_Document_DOC_DOCX_using_CSharp.md

You can find detailed information at: Convert MS Project MPP to Word Document (DOC/DOCX) using C#

Convert_MPP_To_DOCX.cs

// Load the MPP file
Project project = new Project("SourceDirectory\\Tasks\\project_test.mpp");

// Create an instance of the MemoryStream class
MemoryStream stream = new MemoryStream();

// Save the project as PDF to the MemoryStream
project.Save(stream, SaveFileFormat.PDF);

// Load the PDF from the MemoryStream
Document document = new Document(stream);

// Save the PDF as DOCX
document.Save("OutputDirectory\\SaveProjectAsDocx_out.docx", SaveFormat.DocX);