document ai read change fileURI to local file path

Question

document ai read change fileURI to local file path

Herson Ian Moneda 60

Hi,

I'm new to this document AI, I want to know if we change the fileURI path to a local file path.

fileURI requires an https link, is there a way or a code to use a local file path.

string modelId = "";

Uri fileUri = new Uri("");

Operation<AnalyzeResult> operation = await client.AnalyzeDocumentAsync(WaitUntil.Completed, modelId, fileUri);

AnalyzeResult result = operation.Value;

Any help is appreciated.

Thanks

Prashanth Veeragoni 4,440 Reputation points Microsoft External Staff Moderator

2025-04-17T17:19:09.2566667+00:00
Hi Herson Ian Moneda,

You're right that Azure Document Intelligence (formerly known as Document AI) generally expects a URL (fileUri) pointing to a file in Azure Blob Storage or another publicly accessible HTTPS endpoint.

You cannot directly pass a local file path to fileUri. But you can use a local file by reading it into a stream and using an overload of the AnalyzeDocumentAsync method that accepts a stream instead of a URI.

If you're using the Azure.AI.FormRecognizer (Document Intelligence) SDK in C#, you can read a local file using a FileStream.

Code

using Azure; using Azure.AI.FormRecognizer.DocumentAnalysis; using System.IO; using System.Threading.Tasks; // Initialize client var client = new DocumentAnalysisClient( new Uri("<your-endpoint>"), new AzureKeyCredential("<your-key>") ); // Your custom model ID string modelId = "<your-model-id>"; // Load local file into stream using var stream = File.OpenRead(@"C:\path\to\your\file.pdf"); AnalyzeDocumentOperation operation = await client.AnalyzeDocumentAsync(WaitUntil.Completed, modelId, stream); AnalyzeResult result = operation.Value; // Use the result here

· You’re using new Uri() which expects an HTTPS URL, so that overload of AnalyzeDocumentAsync won’t work for local files.

· Instead, you must use the overload that takes a Stream if you want to analyze local files directly.

Hope this helps, do let me know if you have further queries.

Thank you!
Herson Ian Moneda 60 Reputation points

2025-04-17T18:20:16.7933333+00:00

That's great, I was able to make it work on my console application.

How about if I'll be implementing this code on a c#.net web application, instead of local file path I'll be using a file upload with multiple files attached. How do we go about it? Should I replace the File.OpenRead to for each FileUpload.PostedFiles

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Prashanth Veeragoni 4,440 Reputation points Microsoft External Staff Moderator

2025-04-17T17:19:09.2566667+00:00

Hi Herson Ian Moneda,

You're right that Azure Document Intelligence (formerly known as Document AI) generally expects a URL (fileUri) pointing to a file in Azure Blob Storage or another publicly accessible HTTPS endpoint.

You cannot directly pass a local file path to fileUri. But you can use a local file by reading it into a stream and using an overload of the AnalyzeDocumentAsync method that accepts a stream instead of a URI.

If you're using the Azure.AI.FormRecognizer (Document Intelligence) SDK in C#, you can read a local file using a FileStream.

Code

using Azure; using Azure.AI.FormRecognizer.DocumentAnalysis; using System.IO; using System.Threading.Tasks; // Initialize client var client = new DocumentAnalysisClient( new Uri("<your-endpoint>"), new AzureKeyCredential("<your-key>") ); // Your custom model ID string modelId = "<your-model-id>"; // Load local file into stream using var stream = File.OpenRead(@"C:\path\to\your\file.pdf"); AnalyzeDocumentOperation operation = await client.AnalyzeDocumentAsync(WaitUntil.Completed, modelId, stream); AnalyzeResult result = operation.Value; // Use the result here

· You’re using new Uri() which expects an HTTPS URL, so that overload of AnalyzeDocumentAsync won’t work for local files.

· Instead, you must use the overload that takes a Stream if you want to analyze local files directly.

Hope this helps, do let me know if you have further queries.

Thank you!
Herson Ian Moneda 60 Reputation points

2025-04-17T18:20:16.7933333+00:00

That's great, I was able to make it work on my console application.

How about if I'll be implementing this code on a c#.net web application, instead of local file path I'll be using a file upload with multiple files attached. How do we go about it? Should I replace the File.OpenRead to for each FileUpload.PostedFiles

Answer 1

Prashanth Veeragoni 4,440 Microsoft External Staff Moderator

Hi Herson Ian Moneda,

Awesome to hear that it worked in your console App! Now moving to a C#.NET Web Application with file upload (multiple files) — yep, you're spot on! You'll need to process each uploaded file from the FileUpload control (or IFormFile if you're using ASP.NET Core MVC).

Make sure your form has enctype="multipart/form-data".

Consider file type validation (.pdf, .jpg, .png, etc.) before processing.

You might want to show the results on the same page or store them in a temporary collection.

Hope this helps. Do let us know if you any further queries.

If this answers your query, do click Accept Answer and Yes for was this answer helpful. And, if you have any further query do let us know.

Thank you!

Saideep Anchuri 7,040 Reputation points Microsoft External Staff Moderator

2025-04-18T16:30:35.59+00:00

Hi Herson Ian Moneda,

Following up to see if the above answer was helpful.

Thank You.
Herson Ian Moneda 60 Reputation points

2025-04-18T17:10:39.8933333+00:00

Yes it helps. Thank you.

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document ai read change fileURI to local file path

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