gistfile1.txt

using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Threading.Tasks;
using Windows.Foundation;
using Windows.Storage;
using Windows.Storage.Streams;
using Windows.Web;
namespace Rememba.Windows.Extensions
{
    public sealed class StreamUriWinRTResolver : IUriToStreamResolver
    {
        /// <summary>
        /// The entry point for resolving a Uri to a stream.
        /// </summary>
        /// <param name="uri"></param>
        /// <returns></returns>
        public IAsyncOperation<IInputStream> UriToStreamAsync(Uri uri)
        {
            if (uri == null)
            {
                throw new Exception();
            }
            string path = uri.AbsolutePath;

            if (System.Diagnostics.Debugger.IsAttached)
            {
                System.Diagnostics.Debug.WriteLine(string.Format("Stream Requested: {0}", uri.ToString()));
            }

            // Because of the signature of the this method, it can't use await, so we 
            // call into a seperate helper method that can use the C# await pattern.
            return getContent(path).AsAsyncOperation();
        }

        /// <summary>
        /// Helper that cracks the path and resolves the Uri
        /// Uses the C# await pattern to coordinate async operations
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        private async Task<IInputStream> getContent(string path)
        {
            var uri = new System.Uri("ms-appx:///html" + path);

            try
            {
                StorageFile file = await StorageFile.GetFileFromApplicationUriAsync(uri);


                var stream = await file.OpenAsync(FileAccessMode.Read);


                return stream;
            }
            catch(Exception ex)
            {
                
            }

            uri = new System.Uri("ms-appx:///html/ContentEditor/dummy.png");
            StorageFile dummyFile = await StorageFile.GetFileFromApplicationUriAsync(uri);
            var dummyStream = await dummyFile.OpenAsync(FileAccessMode.Read);

            return dummyStream;
                           
        }
    }
}