Deserialize to object

Hi!

I found the below code for how to deserialize data from a file. But the code only returns a string representing the data, not the original object. How can I get it to deserialize into the same object as it was serialized from?

Thanks, Sigurd F

           string content = String.Empty;

            var myStream = await ApplicationData.Current.LocalFolder.OpenStreamForReadAsync(JSONFILENAME);
            using (StreamReader reader = new StreamReader(myStream))
            {
                content = await reader.ReadToEndAsync();
            }
            var obj = App.Current as App;
            //obj.objectGraph = content;