Question

I am trying to create a list as below and updating it with values from the datareader. I need help in writing the code to update this list from the data reader.

internal IList<FilingDto> LoadStatusDtofromReader(IDataReader reader)
        {
            IList<FilingDto> filingstatus = new List<FilingDto>();

            while (reader !=null && reader.Read())
             {
                var dto = new FilingDto();
                var Year = (Decimal)reader["Year"];
                dto = new FilingDto()
                {

                    Controllerid = (Guid)reader["Collectorid"],
                    Status = DBNull.Value.Equals(reader["Status"]) ? string.Empty : reader["Status"].ToString(),
                    Year = Convert.ToInt32(Year),
                    Level = DBNull.Value.Equals(reader["Level"]) ? string.Empty : reader["ServiceLevel"].ToString()
                };

                filingstatus.Add(dto);
            }

            return status;
        }

The code to read from the datareader is as below but i am stuck in between please help me complete this

DataTable FilingStatus = new DataTable("FilingStatus");
                SqlConnection sqlcon = new SqlConnection(ConfigurationManager.ConnectionStrings["Connectionstring"].ConnectionString);
                sqlcon.Open();
                SqlCommand cmd = new SqlCommand("select Collectorid, Status, Year, Level from dbo.abc", sqlcon);

                using (IDataReader dr =  

Answer 1

You should invoke ExecuteReader on SqlCommand object

SqlCommand cmd = new SqlCommand("select Collectorid, Status, Year, Level from dbo.abc", sqlcon);
            SqlDataReader reader = cmd.ExecuteReader();
            try
            {
                while (reader.Read())
                {
                    Console.WriteLine(String.Format("{0}, {1}",
                        reader[0], reader[1]));
                }
            }
            finally
            {
                // Always call Close when done reading.
                reader.Close();
            }

I suggest to use ORM like Entity framework instead ADO.NET