Question

I have a fairly complex scenario that I try to port to Windows 8 from Windows Phone 7.

I need to

1. Download s Zip file from the internet
2. Unzip it to the isolated storage
3. Read the unzipped xml files and images

Problems

1. In Windows Phone 7 I use WebClient that is no longer available in Windows 8. I tried HttpClientHandler but I am only able to download the ZIP file as a string and I do no know how to save it to isolated storage.

2. I found ZipArchive class but it takes a IO.Stream and I am not really sure how to use it (if I had the file save somewehre – point 1)

Answer 1

I’m just starting out with the new API’s as well (so this might be off a bit), but based on the documentation:

• HttpClient (and it’s default handler HttpClientHandler) return a Task<HttpResponseMessage> from SendAsync.
• The HttpResponseMessage has a property, Content which is of type HttpContent.
• HttpContent in turn has a method, ReadAsStreamAsync, which returns Task<Stream> which you should be able to use (albeit indirectly) to pass to ZipArchive.

Or you can just use the HttpClient.GetStreamAsync method to get the stream (much simpler):

HttpClient client = new HttpClient();
Stream stream = await client.GetStreamAsync(uri);

_{If that doesn’t work then you could also just wrap the string you get now in a MemoryStream and pass it to ZipArchive but that sounds kind of unsafe because of possible encoding problems.}