如何在Windows Phone 8中打开.txt和.docx和.xls文档

Question

How do I open text document, .docx and .xls document in windows phone 8, I am saving file in isolated storage then trying to open using Launcher.FileAsync but do not getting the result. For more information, see my code below:

  string file = "Download.txt";
  IsolatedStorageFileStream isfStream = new IsolatedStorageFileStream(file, FileMode.Create, IsolatedStorageFile.GetUserStoreForApplication());

        isfStream.Close();


        StorageFolder local = Windows.Storage.ApplicationData.Current.LocalFolder;
        StorageFile pdffile = await local.GetFileAsync(file);

        Windows.System.Launcher.LaunchFileAsync(pdffile);

Answer 1

The syntax of GetFileAsync() is

public IAsyncOperation<StorageFile> GetFileAsync(string name)

where

name : The name (or path relative to the current folder) of the file to get.

your string is

string file = "Download.txt";

This might not be accepted as a relative path. Try something like,

string file = @"\Download.txt";