How do I save an image url to a local file in Windows 8 c#

Question

Basically, the app displays images, and I want the user to be able to select an image for download and store it locally.

I have the URL, but I don't know how to use that url in conjunction with the filepicker.

Take a look here: http://stackoverflow.com/questions/11363169/winrt-storagefile-write-downloaded-file — Manuel Rauber, Oct 27 '12 at 21:16

score 4 · Accepted Answer · answered Oct 28 '12 at 12:08

You can use the following method to download the file from a given Uri to a file selected with a file picker:

private async Task<StorageFile> SaveUriToFile(string uri)
{
    var picker = new FileSavePicker();

    // set appropriate file types
    picker.FileTypeChoices.Add(".jpg Image", new List<string> { ".jpg" });
    picker.DefaultFileExtension = ".jpg";

    var file = await picker.PickSaveFileAsync();
    using (var fileStream = await file.OpenStreamForWriteAsync())
    {
        var client = new HttpClient();
        var httpStream = await client.GetStreamAsync(uri);
        await httpStream.CopyToAsync(fileStream);
        fileStream.Dispose();
    }
    return file;
}

score 0 · Answer 2 · answered Oct 27 '12 at 19:29

0

I think you can always read the file as a stream and save it bit by bit on the local machine. But I need to say that I've done this many times in JAVA, I never needed to check this in C# :)

answered Oct 27 '12 at 19:29

Fixus

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Yeah you can open it as BinaryStream and then use a BinaryStreamWriter to dump the steam to a file. But its much more complicated than it needs to be. – Haedrian Oct 27 '12 at 19:38

Haedrian · Answer 3 · 2012-10-27T19:38:45.397

-1

SaveFileDialog myFilePicker = new SaveFileDialog();

//put options here like filters or whatever

if (myFilePicker.ShowDialog() == DialogResult.OK)
{
    WebClient webClient = new WebClient();
    webClient.DownloadFile("http://example.com/picture.jpg", myFilePicker.SelectedFile);
}

edited Oct 27 '12 at 19:38

answered Oct 27 '12 at 18:43

Haedrian

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None of that seems to exist for windows 8 c#. – Smeegs Oct 27 '12 at 19:56
Is this a metro app? Then this answer should have negative votes. – Justin Skiles Oct 27 '12 at 20:04
Yes, that's why I tagged it with winrt. – Smeegs Oct 27 '12 at 20:16

How do I save an image url to a local file in Windows 8 c#

3 Answers3