public byte[] GetResourceContents(ItemIdentifier itemId, Type itemType, Resource resource, string revision)
{
//encrypt login and password
string loginName = "";
string pass = "";
getloginAndPass(UserId, ref loginName, ref pass);
string _url = getWSUrl(this.Url);
string typeName = itemType.AssemblyQualifiedName;
RepositoryWebservice repo = new RepositoryWebservice(_url);
byte[] resourceContent = Convert.FromBase64String( repo.GetResourceContents(this.SessionKey, itemId, typeName, resource, loginName, pass));
repo.Dispose();
return resourceContent;
}