The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 5: FILESTREAM with ASP.NET and SilverlightThe web page expects a parameter in the query string named ItemNumber (Listing 5-11).protected void Page_Load(object sender, EventArgs e){string ItemNumber;ItemNumber = Request.QueryString["ItemNumber"].ToString();//Create and open a database connectionSqlConnection cn = new SqlConnection();cn.ConnectionString =System.Configuration.ConfigurationManager.ConnectionStrings["NorthPoleDB"].ToString();cn.Open();//Create a Command objectSqlCommand cmd = new SqlCommand();cmd.CommandText = "GetItemImageInfo";cmd.Connection = cn;cmd.CommandType = System.Data.CommandType.StoredProcedure;cmd.Parameters.AddWithValue("@ItemNumber", ItemNumber);//Begin a transactionSqlTransaction trn = cn.BeginTransaction("ItemTran");cmd.Transaction = trn;string filePath = null;byte[] txContext = null;try{//Execute the commandSqlDataReader reader = cmd.ExecuteReader();if (reader.Read()){txContext = (reader["txContext"] as byte[]);filePath = reader["filePath"].ToString();}reader.Close();// Open the FILESTREAM data file for readingSqlFileStream fs = new SqlFileStream(filePath, txContext,FileAccess.Read);191