The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 4: FILESTREAM with Entity Framework and LINQ to SQLAdding a row to the tableHaving completed the object relational mapping, it is quite easy to perform operationsthat manipulate the data stored in the associated tables. The C# code in Listing 4-4 adds anew record into the Items table. One of the columns being populated is a FILESTREAMcolumn. The content of a disk file is read and copied into the ItemImage property of theEF class Item, which represents the FILESTREAM column in the table.static void Main(string[] args){Item itm = new Item();itm.ItemNumber = "IT001";itm.ItemDescription = "Microsoft Mouse";itm.ItemImage =System.IO.File.ReadAllBytes("c:\\temp\\microsoftmouse.jpg");NorthPoleEntities npe = new NorthPoleEntities();npe.AddObject("Items", itm);try{npe.SaveChanges();}catch (Exception ex){Console.Write(ex.Message);}}npe.Dispose();Listing 4-4:Adding a new record to the Items table using EF.Note that there is nothing FILESTREAM-specific in this code. Though the column beingpopulated is a FILESTREAM column, the code treats it as a VARBINARY(MAX) column.142