How to download a file via web service in Windows Phone 8.1?

Question

My project just got 2 part.
1.Pivot app
2.Webclient server (provide data for pivot app the view the data)
My concert that how do i do a download button to download a file via web services in to isolated storage.
urgent!

Answer 1

something like this:
public async System.Threading.Tasks.Task DownloadFile()
using (var client = new Windows.Web.Http.HttpClient())
var stream = await client.GetInputStreamAsync(new System.Uri("http://urltomyfile"));
var file = await ApplicationData.Current.LocalFolder.CreateFileAsync("myfile.txt", CreationCollisionOption.GenerateUniqueName);
using (var fileStream = await file.OpenAsync(FileAccessMode.ReadWrite))
IBuffer buffer = new Windows.Storage.Streams.Buffer(1024);
while ((buffer = await stream.ReadAsync(buffer, buffer.Capacity, InputStreamOptions.None)).Length > 0)
await fileStream.WriteAsync(buffer);
await fileStream.FlushAsync();
how is your webservices offering the file?
Microsoft Certified Solutions Developer - Windows Store Apps Using C#