WinRT StorageFile 写入下载的文件 [英] WinRT StorageFile write downloaded file

问题描述

我正在为一个简单的问题而苦苦挣扎.我想使用以下代码从网络下载图像:

I'm struggling with a easy problem. I want to download an image from web using this code:

WebRequest requestPic = WebRequest.Create(@"http://something.com/" + id + ".jpg");
WebResponse responsePic = await requestPic.GetResponseAsync();

现在我想在 StorageFile 中写入 WebResponse 的流(例如，在应用程序的存储中创建一个文件 id.jpg)，但我还没有找到任何方法来实现这一点.我在网上搜索它，但没有成功 - 所有方式不兼容的 Stream 类型等等.

Now I wanted to write the WebResponse's stream in a StorageFile (eg. create a file id.jpg in the app's storage), but I haven't found any way to achieve that. I searched the web for it, but no success - all ways incompatible Stream types and so on.

你能帮忙吗?

推荐答案

我找到了以下解决方案，它有效且不太复杂.

I have found the following solution, which works and is not too complicated.

    public async static Task<StorageFile> SaveAsync(
        Uri fileUri,
        StorageFolder folder,
        string fileName)
    {
        var file = await folder.CreateFileAsync(fileName, CreationCollisionOption.ReplaceExisting);
        var downloader = new BackgroundDownloader();
        var download = downloader.CreateDownload(
            fileUri,
            file);

        var res = await download.StartAsync();            

        return file;
    }

这篇关于WinRT StorageFile 写入下载的文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！