How read data from Table to write into file AX 2012

static server void Salah_WriteFile(Args _args)
{

TextIo file;
Filename filenmae= @"C:/Temp";

Salah_CarTable carTable;
container con;
FileIOPermission permission;

#File

try
{
 // Create the permission class
permission = new FileIoPermission(filename, #io_write);

// Add a request for permission before new TextIo()
permission.assert();

// Create the TextIo object
file = new TextIo(filename, #io_write);

if (!file)
throw Exception::Error;

// Specify the delimiters
file.outRecordDelimiter(#delimiterCRLF);
file.outFieldDelimiter(";") ;       

// Loop through the data source
while select carTable
{

// Empty the container
con = connull();

// Set the data into the container
con = conins(con, 1, carTable.CarId);
con = conins(con, 2, carTable.CarBrand);
con = conins(con, 3, carTable.Mileage);
con = conins(con, 4, carTable.Model);
con = conins(con, 5, carTable.ModelYear);

// Write the container to the file
file.writeExp(con);
}

catch(Exception::Error)

{
    error("You do not have access to write the file to the selected folder");
}
// Revert the access privileges
CodeAccessPermission::revertAssert();

}