How to write txt file in windows app store?

Question

i have been searching all night to figure out how to write txt file to a specific location like D:\ i tried the StreamWriter and System.IO.File which is not included in the app store applications with no luck so far i would appreciate any help.

Answer 1

You can't write to any location from Windows Store apps because they are sandboxed, you can only write to app's local folder:

string text = "Hello, world";

StorageFolder folder = ApplicationData.Current.LocalFolder;
StorageFile file = await folder.CreateFileAsync("data.txt");

if (file != null)
{
    await FileIO.WriteTextAsync(file, text);
}

Answer 2

You might want to checkout FileIO class, more specifically Writetextasync method for writing text files.