CODEWITHSUNDEEP
c#blazormaui.net-7.0
DaveK
DaveK

Reputation: 590

.NET Maui Blazor, SaveFile Implementation

I have a project that is a Blazor Hybrid using Maui .NET. There exists the method FilePicker which allows you to open a file from the computer. However I cannot find a method to SAVE a file to the computer? May anyone know if this exists or how I can accomplish this if it doesn't?

Upvotes: 1

Views: 1218

Answers (1)

Alexandar May - MSFT
Alexandar May - MSFT

Reputation: 10078

You can create your own SaveFile service with the SaveFile Implemtation.Here's the code snippet below for the WinUI example that you can refer to:

public sealed class SaveFile : ISaveFile
{
    public async ValueTask SaveFileAsync(string filename, Stream stream)
    {
        var extension = Path.GetExtension(filename);

        var fileSavePicker = new FileSavePicker();
        fileSavePicker.SuggestedFileName = filename;
        fileSavePicker.FileTypeChoices.Add(extension, new List<string> { extension });

        if (MauiWinUIApplication.Current.Application.Windows[0].Handler.PlatformView is MauiWinUIWindow window)
        {
            WinRT.Interop.InitializeWithWindow.Initialize(fileSavePicker, window.WindowHandle);
        }

        var result = await fileSavePicker.PickSaveFileAsync();
        if (result != null)
        {
            using (var fileStream = await result.OpenStreamForWriteAsync())
            {
                fileStream.SetLength(0); // override
                await stream.CopyToAsync(fileStream);
            }
        }
    }
}

Upvotes: 2

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