1 public class UploadFile
2 {
3 //文件名称
4 public string FileName{get;set;}
5 //文件类型
6 public StorageFile File{get;set;}
7
8 //文件数据流
9 public Stream FileStream { get; private set; }
10
11
12 public UploadFile(StorageFile file)
13 {
14 this.StorageFile=file.Name;
15 this.File=file;
16 }
17
18 //将文件转换成流
19 public async Task<byte[]> GetBytes()
20 {
21 FileStream =(Stream) await File.OpenStreamForReadAsync();
22 byte[] bytes = new byte[FileStream.Length];
23 FileStream.Read(bytes, 0, bytes.Length);
24 FileStream.Seek(0, SeekOrigin.Begin);
25 return bytes;
26 }
27
28
29
30 //将流写入文件
31 public async void GetFile(Byte[] bytes)
32 {
33 StorageFolder applicationFolder = ApplicationData.Current.LocalFolder;
34 StorageFile storageFile = await applicationFolder.CreateFileAsync("1.txt", CreationCollisionOption.ReplaceExisting);
35 StorageFile file = await applicationFolder.GetFileAsync("1.txt");
36 using (var stream = await file.OpenStreamForWriteAsync())
37 {
38 await stream.WriteAsync(bytes, 0, bytes.Length);
39 stream.Flush();
40 }
41
42
43 }
