The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 11: FileTableYou may also want to use the file I/O APIs to create new files and folders. First, you'llneed to obtain the UNC path of a valid folder in the FileTable namespace. Listing 11-25shows how to obtain the UNC path of the FileTable root folder. It uses the T-SQLFileTableRootPath() function to retrieve the UNC path. The argument to thefunction is the name of the FileTable. If this argument is not specified, the database'sroot directory is returned. This function is discussed in more detail in the section belowon Managing FileTables.string SqlText = "SELECT FileTableRootPath('Documents')";string RootPath = null;using (SqlConnection conn = new SqlConnection("server=.;database=NorthPole;integrated security=sspi;"))using (SqlCommand cmd = new SqlCommand(SqlText, conn)){conn.Open();RootPath = (string)cmd.ExecuteScalar();}Listing 11-25: Obtaining the root folder of a FileTable in .NET.Listing 11-26 then uses this root folder value to create a folder and a file inside the newfolder. In this code snippet, the System.IO namespace is not explicitly specified for theclass names, so make sure you have a using statement (or Imports in Visual Basic) atthe top of your code file before running this code.if (RootPath != null){DirectoryInfo di = Directory.CreateDirectory(RootPath +"\\Order Files");using (StreamWriter sw = File.CreateText(di.FullName +"\\ReadMe.txt")){sw.WriteLine("Hello, World!");}}Listing 11-26: Creating a folder and file in a FileTable using .NET file I/O APIs.422