I was having an issue with an even smaller size (400kb ish)

[arivera12]

I was having an issue with an even smaller size (400kb ish)

I turned my stream into a byte array and it worked.

@arivera12, you might want to impliment this

byte[] myByteArray;
using (var memoryStream = new MemoryStream())
{
    originalStream.CopyTo(memoryStream);
    myByteArray= memoryStream.ToArray();
}

for your

internal static async Task<byte[]> ToByteArrayAsync(this Stream stream)
{
    var streamLength = (int)stream.Length;
    var data = new byte[streamLength];
    stream.Position = 0;
    await stream.ReadAsync(data, 0, streamLength);
    return data;
}

I can submit a PR if you need/like

Originally posted by @thalaeg in #25 (comment)

[arivera12]

@thalaeg can you compare the bytes length of the .xlsx file when using the stream and byte[] overload methods?

[thalaeg]

sure. Interestly, something I discovered by accident,

await BlazorDownloadFileService.DownloadFile("streamFile.xlsx", myStream, CancellationToken.None, CancellationToken.None, progress: null);
does not work.

but
await BlazorDownloadFileService.DownloadFile("streamFile.xlsx", myStream, contentType: "application/octet-stream");

seems to work.

Byte size: 373,633
Stream size (failing): 163,840
Stream size (Working): 373,633

[arivera12]

@thalaeg

The method that works have a different implementation from the one that **doesn't work.

The buffered method that is the one that doesn't work I may be having issues reading the bytes from the stream.

BlazorDownloadFile/BlazorDownloadFile/Service/BlazorDownloadFileService.cs

Line 371 in 1777230

public async ValueTask<DownloadFileResult> DownloadFile(string fileName, Stream stream, CancellationToken cancellationTokenBytesRead, CancellationToken cancellationTokenJavaScriptInterop, int bufferSize = 32768, string contentType = "application/octet-stream", IProgress<double>? progress = null)

163,840 bytes is almost half size 373,633 / 2 = 186,816.5.