>2GB file upload component (or update FileEdit)?

[sturlath]

Any change to have a Large File Upload component for Blazor WASM (or update FileEdit)? There seems to be a hard file size limit for Blazor of Int32.MaxValue = 2147483647 bytes .

When uploading a >2GB file I can't read it to a buffer and then send it to external API. I would either want to read it in and directly stream it to an API or brake it down into "chunks" and push it to API like e.g Syncfusion does does.

To be sure if there is a <2GB limit I asked this question but its totally unclear to me if it's still a limit in .net 6 (I will be moving there next week).

[sturlath]

Also the OpenReadStream example always throws this exception with very small files (1-2MB) after hitting OnWritten() once

Value was either too large or too small for an Int32

I even found a similar code that I could not get running either... humm..

[David-Moreira]

Hello I just tested OpenReadStream and it does not throw the reported exception. Can you provide a repository?

As for the large files, I'm not entirelly sure about that limitation have you tested it with Blazorise? Like this?
@stsrki ?

                using ( var stream = new MemoryStream() )
                {
                    // Here we're telling the FileEdit where to write the upload result
                    await file.WriteToStreamAsync( stream );

                    // Once we reach this line it means the file is fully uploaded.
                    // In this case we're going to offset to the beginning of file
                    // so we can read it.
                    stream.Seek( 0, SeekOrigin.Begin );

                    // Use the stream reader to read the content of uploaded file,
                    // in this case we can assume it is a textual file.
                    using ( var reader = new StreamReader( stream ) )
                    {
                        fileContent = await reader.ReadToEndAsync();
                    }
                }

[sturlath]

Very strange... I'll create a repo for you (if that fails.. else there is something else going on)

[stsrki]

I don't remember we have any limit on the file size. We have our own implementation for the file uploading that is not using any code from the native Blazor file input. If this is a Blazor/WebAssembly limitation I also don't think we could do anything.

[sturlath]

@stsrki was there a ticket for this? I would love to get rid of Syncfusion and shrink the WASM size...

[stsrki]

@David-Moreira You have worked with IJSStreamReference recently. So I think this should be fixed in v1.1. Can you confirm?

[David-Moreira]

I remember testing with a few big files, but I don't remember if they were over >2GB. I need to test it. I need to open an issue so I can keep track of this. Will let you know the results.

[David-Moreira]

On another note, @sturlath since you're so keen on moving to our FileEdit / FilePicker if you have the time please test our #3745 which brings improvements to FileEdit and the new component FilePicker with more inbuilt features out of the box.
See if there's any important feature we might be missing.

[sturlath]

Awesome! @David-Moreira I´ll take it for a spin in 1-3 days and give you as much feedback as I can!