FileDataServiceAzure.cs :  » Bloggers » dasBlog » newtelligence » DasBlog » Runtime » Azure » C# / CSharp Open Source

using System.IO;
using System.Xml.Serialization;
using Microsoft.Samples.ServiceHosting.StorageClient;

namespace newtelligence.DasBlog.Runtime.Azure{

    // Wrapper class to load and store clr objects from the blob storage,
    // using the XmlSerializer.
    internal class FileDataServiceAzure<T> : StreamDataServiceAzure
    {
        public FileDataServiceAzure()
            : base()
        {
            //...
        }

        public T LoadFile(string filename, string category)
        {
            var stream = LoadFileStream(filename, category);
            if (stream == null) { return default(T); }

            using (stream)
            {
                var ser = new XmlSerializer(typeof(T));
                stream.Position = 0;
                return (T)ser.Deserialize(stream);
            }
        }

        public void SaveFile(string filename, string category, T file)
        {
            using (var stream = new MemoryStream())
            {
                var ser = new XmlSerializer(typeof(T));
                ser.Serialize(stream, file);

                // put the straem back to the start
                stream.Position = 0;

                SaveFileStream(filename, category, stream);
            }
        }
    }
}