FileDownloadBlazor 0.0.4

FileDownloadBlazor

Download file in blazor apps. Supports asynchronously and synchronously downloading from uris, byte arrays, and streams.

Notes

1. ISyncFileDownloader is not registered as a service, use IFileDownloader.Sync instead.
2. IFileDownloader.Sync is only available for Blazor WebAssembly.
3. IFileDownloader.Sync may throw exceptions if the JavaScript module has not been imported, since the modules can only be imported asynchronously.
   • But you don't have to worry about that, since it's not multithreaded.
   • If you do want to ensure it has been imported, use IFileDownloader.CheckJavaScriptModuleAsync.

Usage

In Program.cs:

using FileDownloadBlazor.Extensions;

builder.Services.AddFileDownloadBlazor();

In your page:

@using FileDownloadBlazor
@inject IFileDownloader Downloader

<button @onclick="TestAsyncUri">TestAsyncUri</button>
<button @onclick="TestAsyncBytes">TestAsyncBytes</button>
<button @onclick="TestAsyncStream">TestAsyncStream</button>
<button @onclick="TestSyncUri">TestSyncUri</button>
<button @onclick="TestSyncBytes">TestSyncBytes</button>
<button @onclick="TestSyncStream">TestSyncStream</button>

@code
{
    private async Task TestAsyncUri()
    {
        await Downloader.DownloadAsync(
            "./", 
            "uri-async.html");
    }

    private async Task TestAsyncBytes()
    {
        await Downloader.DownloadAsync(
            [72, 101, 108, 108, 111, 44, 32, 119, 111, 114, 108, 100, 33],
            "bytes-async.txt");
    }

    private async Task TestAsyncStream()
    {
        using var stream = new MemoryStream();
        stream.WriteByte(72);
        stream.WriteByte(101);
        stream.Position = 1;
        await Downloader.DownloadAsync(
            stream,
            "stream-async.txt");
    }

    private void TestSyncUri()
    {
        Downloader.Sync.Download(
            "./",
            "uri-sync.html");
    }

    private void TestSyncBytes()
    {
        Downloader.Sync.Download(
            [72, 101, 108, 108, 111, 44, 32, 119, 111, 114, 108, 100, 33],
            "bytes-sync.txt");
    }

    private void TestSyncStream()
    {
        using var stream = new MemoryStream();
        stream.WriteByte(72);
        stream.WriteByte(101);
        stream.Position = 1;
        Downloader.Sync.Download(
            stream,
            "stream-sync.txt");
    }
}