Save data from my sql database to pdf file - C#

I have an employee table in a MySQL database, I have regular columns as full name, date hired, etc. I have also a column which stores binary (blob) data for each employee which I know it’s a pdf file. Now, I want to save each of this binary files into a pdf file on my computer, in C#.

I saw a few forms similar to my scenario, but wasn’t help me.

Here is what I have so far:

    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Windows.Forms;
    using MySql.Data.MySqlClient;

    namespace MySqlExport
    {
        public partial class Form1 : Form
        {
            public Form1()
            {
                InitializeComponent();
            }

            private void button1_Click(object sender, EventArgs e)
            {
                try
                {
                    MySqlCoection coection = DBcoection.GetDBcoection();
                    string selectString = " select pdfFile, fullName from Employee ";
                    MySqlCommand selectCommand = new MySqlCommand(selectString, coection);
                    coection.Open();
                    MySqlDataReader reader = selectCommand.ExecuteReader();
                    reader.Read();
                    // now whats next??.........
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }

Thank you everybody for your help.