The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 4: FILESTREAM with Entity Framework and LINQ to SQLstatic void Main(string[] args){NorthPoleDBDataContext db = new NorthPoleDBDataContext();var itms = from p in db.Itemswhere p.ItemNumber == "IT001"select p;}foreach (var itm in itms){Console.WriteLine("Item Description = {0}",itm.ItemDescription);System.IO.File.WriteAllBytes("c:\\temp\\MicrosoftMouse.jpg",itm.ItemImage.ToArray());}db.Dispose();Listing 4-12:Querying a FILESTREAM table using LINQ to SQL.Now run your application or debug and step through the code to see how it works.Remember, LINQ to SQL accesses FILESTREAM data through the T-SQL interface.Streaming access to the FILESTREAM data is not available when accessing it throughLINQ to SQL. This might result in performance problems on systems that perform a largenumber of FILESTREAM operations using LINQ to SQL.SummaryWe have seen how to write applications that access FILESTREAM data usingADO.NET EF and LINQ to SQL. The former is one of the most popular objectrelational mapping frameworks available for .NET. The latter offers simplicityand remains a viable data access option, but has become less prevalent followingthe introduction of Entity Framework.163