System.IO.File does not contain ReadAllBytes C#

In C# I am creating simple facebook application for WP7 and I came across a problem.

I'm trying to do the part where you can upload a picture in the album or feed.

Code:

FacebookMediaObject facebookUploader = new FacebookMediaObject { FileName = "SplashScreenImage.jpg", ContentType = "image/jpg" };

var bytes = System.IO.File.ReadAllBytes(Server.MapPath("~") + facebookUploader.FileNa开发者_Go百科me);
facebookUploader.SetValue(bytes);

Error:

• System.IO.File does not contain a definition for ReadAllBytes

You've got a couple of problems there. First off, Server.MapPath isn't going to give you the file location (since you're not in a web application). But once you do know the file path you're looking for (in IsolatedStorage), you can do something like this to read in the file as a byte array:

    public byte[] ReadFile(String fileName)
    {
        byte[] bytes;
        using (IsolatedStorageFile appStorage = IsolatedStorageFile.GetUserStoreForApplication())
        {
            using (IsolatedStorageFileStream file = appStorage.OpenFile(fileName, FileMode.Open, FileAccess.Read))
            {
                bytes = new byte[file.Length];

                var count = 1024;
                var read = file.Read(bytes, 0, count);
                var blocks = 1;
                while(read > 0)
                {
                    read = file.Read(bytes, blocks * count, count); 
                    blocks += 1;
                }
            }
        }
        return bytes;
    }

I found a solution.

Code:

string imageName = boxPostImage.Text;
StreamResourceInfo sri = null;
Uri jpegUri = new Uri(imageName, UriKind.Relative);
sri = Application.GetResourceStream(jpegUri);

try
{
    byte[] imageData = new byte[sri.Stream.Length];
    sri.Stream.Read(imageData, 0, System.Convert.ToInt32(sri.Stream.Length));

    FacebookMediaObject fbUpload = new FacebookMediaObject
    {
         FileName = imageName,
         ContentType = "image/jpg"
    };
    fbUpload.SetValue(imageData);


    IDictionary<string, object> parameters = new Dictionary<string, object>();
    parameters.Add("access_token", _AccessToken);
    parameters.Add("source", fbUpload);

    //_fbClient.PostAsync("/"+MainPage._albumId+"/photos", parameters);
    _fbClient.PostAsync("/me/photos", parameters);


    MessageBox.Show("Image has been posted successfully..");
}
catch (Exception error)
{
    MessageBox.Show("Sorry, there's an error occured, please try again.");
}