The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 4: FILESTREAM with Entity Framework and LINQ to SQL// Now read the item using SqlFileStream, leveraging// the stored procedure that's mapped as a functionGetSqlFileStreamInfo_Result info =e.GetSqlFileStreamInfo(NewItem.ItemID).ToList()[0];// If the path is NULL, a BLOB file does not exist// and a BLOB must be created firstusing (SqlFileStream fs = new SqlFileStream(info.FilePath, info.Context, FileAccess.Write,FileOptions.WriteThrough, 0L))using (FileStream local = new FileStream("C:\\temp\\MicrosoftMouse.jpg",FileMode.Open, FileAccess.Read)){local.CopyTo(fs);}tran.Commit();}}finally{// If the connection was opened by this procedure, close itif (OpenedConn) e.Connection.Close();}}}return NewItem.ItemID;Listing 4-8:InsertItem method.This code first creates a new instance of the Item class and, for demonstration purposes,assigns values to the ItemNumber, ItemGuid and ItemDescription properties. Then,an instance of the Entity Framework Object Context (NorthPoleEntities class) iscreated. If the object context does not have an open connection to the database, we openthe connection and keep track of the fact that we did so (this means that we can properlyclose it when the method ends).153