Large Csv File export with Blazor? (The JSON value of length n is too large and not supported.)

Question

Firstly to export my csv export I used this method with JSInterop logic. And It works for small size file.

await JSRuntime.InvokeAsync( "FileSaveAs", fileName, noteContent );

I tried to download large size file .While InvokeAsync I got an error "The JSON value of length 475458916 is too large and not supported.'

SaveFile.js is like below:

function FileSaveAs(filename, fileContent) {
var link = document.createElement('a');
    link.download = filename;
    link.href = "data:text/plain;charset=utf-8," + encodeURIComponent(fileContent)
    document.body.appendChild(link);
    link.click();
    document.body.removeChild(link);}

My file size can be 2GBs, 1GBs. I researched blazor side for export operation But I only saw jsinterop example(my first sample) .

Note:I m also Using Devexpress Blazor for UI things.

You can try to create Blob like this [example-blob](https://stackoverflow.com/questions/30167326/unable-to-download-large-data-using-javascript). Hope it helps. — Štefan Bartoš, May 08 '20 at 07:03
But before coming javascript side, it blows at await JSRuntime.InvokeAsync — Kle, May 08 '20 at 07:33
I would generate the link to point to an endpoint on the server that downloads the file rather than trying to push it all the way to the client, encode it as a blob then save it — Mister Magoo, May 08 '20 at 07:34
I don't know what you mean by "like post download". I mean generate a link like `` and have an endpoint on the server at `/downloads` that serves up the CSV data. At the moment, you are trying to send all the data from the server to the client, encoding it as a data URI and putting the entire file into the DOM just to then tell the browser to download it, which is not practical. — Mister Magoo, May 08 '20 at 08:09

Large Csv File export with Blazor? (The JSON value of length n is too large and not supported.)

0 Answers0