[C#] errore su response.write

[drummino^]

Ciao ho questo errore.

Server Error in '/' Application.
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS0103: The name 'id' does not exist in the class or namespace 'ASP.inserisci_aspx'

Source Error:

Line 25: }
Line 26: //int id = MyReader.GetInt32(0);
Line 27: Response.Write(id);
Line 28: Response.write("CIAO");
Line 29: //Console.Writeline(myReader.GetInt32(0));

il codice è questo

MySqlCommand cmd = new MySqlCommand("SELECT id_foto from fotografie order by id_foto DESC", connection);
           try
            {
            //connection.open();
            MySqlDataReader MyReader = cmd.ExecuteReader();
            while (MyReader.Read())
                {
                int id = MyReader.GetInt32(0);
                }
            //int id = MyReader.GetInt32(0);
            Response.Write(id);
            Response.write("CIAO");
            //Console.Writeline(myReader.GetInt32(0));
            }
            catch(Exception e)
                {
            Console.WriteLine("Exception Occured -->> {0}",e);
            } 

[fede_00]

while (MyReader.Read())
{
int id = MyReader.GetInt32(0);
}

se non entra nel ciclo perchè il recordset è vuoto id non viene mai definita