c# FileStream

Question

Hello 

When I click word file which created FileStream it doesnt open.Unable.Please watch if I have mistake?

public void button2_Click(object sender, EventArgs e)

        {

            SqlConnection conn = new SqlConnection("Data Source=USERPC;Initial Catalog=Service;Integrated Security=True;");

            SqlCommand com = new SqlCommand("Select DocName,DocData From Data Where DocID = 1 ",conn);

            conn.Open();

            SqlDataReader dr = com.ExecuteReader();

            while(dr.Read())

            {

                string fileName = "";

                fileName = dr["DocName"].ToString();

                byte[] docbinary = (byte[])dr["DocData"];

                MessageBox.Show(Convert.ToString(docbinary.Length));

                FileStream fs = new FileStream(@"C:\" + fileName, FileMode.Create);

                fs.Write(docbinary, 0, docbinary.Length);

                

                fs.Close();

                fs.Dispose();

                

                

            }

           

            conn.Close();

        }

Thanks.