How to convert (doc -> pdf) a large number of files efficiently ?

Question

Hello Community,

I would like to convert a large number of files (+40) as efficiently as possible with the MS Graph SDK. So far I iterate through the file ids and pass them to the necessary methods:

    private async Task<Stream> ConvertFiles(GraphServiceClient graphClient, string id)
    {
        var queryOptions = new List<QueryOption>()
    {
        new QueryOption("format", "pdf")
    };
        var stream = await graphClient.Drives[DriveId]
                                      .Items[id]
                                      .Content
                                      .Request(queryOptions)
                                      .GetAsync();

        return stream;
    }

    private async Task SaveFilesInOneDrive(GraphServiceClient graphClient, Stream stream, string fileName)
    {
        await graphClient.Drives[DriveId]
                         .Items[PdfItemId].ItemWithPath(StringUtils.BuildNameForAPdfFile(fileName))
                         .Content
                         .Request()
                         .PutAsync<DriveItem>(stream);
    }

But my approach does not seem so efficient, is there anything to speed up the process ?

I would be very pleased to receive feedback.

Greetings :-)

Answer 1

As an idea, you can try to use batch processing to convert multiple doc files to pdf files in a single call request.

============

Update on 10.19

Added a doc reference about using Microsoft Graph to batch requests, you can have a try.
https://learn.microsoft.com/en-us/graph/sdks/batch-requests?tabs=csharp

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Answer 2

Hi, you may try Spire.Doc for .NET, which is a good alternative when doing the file format conversion.

using System;
using Spire.Doc;
using Spire.Doc.Documents;

namespace DoctoPDF
{
    class toPDF
    {
        static void Main(string[] args)
        {
            //Load Document
            Document document = new Document();
            document.LoadFromFile(@"E:\work\documents\TestSample.docx");

            //Convert Word to PDF
            document.SaveToFile("toPDF.PDF", FileFormat.PDF);

        }
    }
}