DataReader to .CSV with column names

Question

I\'m generating a csv file from an SqlDataReader, however it is not writing the column names, how can I make it write them? The code I\'m using is as follows:

Answer 1

I developed following high performance extension

static void Main(string[] args)
        {
            SqlConnection sqlCon = new SqlConnection("Removed");
            sqlCon.Open();
            SqlCommand sqlCmd = new SqlCommand("Select * from Table", sqlCon);
            SqlDataReader reader = sqlCmd.ExecuteReader();
            string csv=reader.ToCSVHighPerformance(true);
            File.WriteAllText("Test.CSV", csv);
            reader.Close();
            sqlCon.Close();
        }

Extention:

public static string ToCSVHighPerformance(this IDataReader dataReader, bool includeHeaderAsFirstRow = true,
            string separator = ",")
        {
            DataTable dataTable = new DataTable();
            StringBuilder csvRows = new StringBuilder();
            string row = "";
            int columns ;
            try
            {
                dataTable.Load(dataReader);
                columns= dataTable.Columns.Count;
                //Create Header
                if (includeHeaderAsFirstRow)
                {
                    for (int index = 0; index < columns; index++)
                    {
                        row += (dataTable.Columns[index]);
                        if (index < columns - 1)
                            row += (separator);
                    }
                    row += (Environment.NewLine);
                }
                csvRows.Append(row);

                //Create Rows
                for (int rowIndex = 0; rowIndex < dataTable.Rows.Count; rowIndex++)
                {
                    row = "";
                    //Row
                    for (int index = 0; index < columns - 1; index++)
                    {
                        string value = dataTable.Rows[rowIndex][index].ToString();

                        //If type of field is string
                        if (dataTable.Rows[rowIndex][index] is string)
                        {
                            //If double quotes are used in value, ensure each are replaced by double quotes.
                            if (value.IndexOf("\"") >= 0)
                                value = value.Replace("\"", "\"\"");

                            //If separtor are is in value, ensure it is put in double quotes.
                            if (value.IndexOf(separator) >= 0)
                                value = "\"" + value + "\"";

                            //If string contain new line character
                            while (value.Contains("\r"))
                            {
                                value = value.Replace("\r", "");
                            }
                            while (value.Contains("\n"))
                            {
                                value = value.Replace("\n", "");
                            }
                        }
                        row += value;
                        if (index < columns - 1)
                            row += separator;
                    }
                    dataTable.Rows[rowIndex][columns - 1].ToString().ToString().Replace(separator, " ");
                    row += Environment.NewLine;
                    csvRows.Append(row);
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
            return csvRows.ToString();
        }