Question

I am having an issue with Windows 8 apps and obtaining a steam from the opened file. There are other ways to approach reading/writing a file in Windows 8, but for the sake of being able to pull out a standard stream I am trying to see if I can. So far no good. The issue is that System.IO.BufferedStream is not part of System.IO in Windows 8 apps. Thus the following code:

    (MemoryStream)(await (await installedLocation.GetFileAsync("SOMEFILE")).OpenStreamForWriteAsync());

My apologies for the condensed code. The above code throws the mentioned exception. The issue, once again, is I cannot create a buffered stream. I was wondering if there was some way around this.

Any help is greatly appreciated!

Answer 1

Here is the code i use for Reading/Writing a file in Windows 8. It works and i hope it helps you too.

    // Read from a file line by line
    public async Task ReadFile()
    {
        try
        {
            // get the file
            StorageFile myStorageFile = await localFolder.GetFileAsync("MyDocument.txt");
            var readThis = await FileIO.ReadLinesAsync(myStorageFile);
            foreach (var line in readThis)
            {
                String myStringLine = line;
            }
            Debug.WriteLine("File read successfully.");
        }
        catch(FileNotFoundException)
        {              
        }
    }
    // Write to a file line by line
    public async void SaveFile()
    {
        try
        {
            // set storage file
            StorageFile myStorageFile = await localFolder.CreateFileAsync("MyDocument.txt", CreationCollisionOption.ReplaceExisting);
            List<String> myDataLineList = new List<string>();
            await FileIO.WriteLinesAsync(myStorageFile, myDataLineList);
            Debug.WriteLine("File saved successfully.");
        }
        catch(FileNotFoundException)
        {              
        }
    }