Convert Image To ByteArray and display in webpage in ASP.Net

public System.Drawing.Image ByteArrayToImage(byte[] byteArray)
{
    MemoryStream img = new MemoryStream(byteArray);
    System.Drawing.Image returnImage = System.Drawing.Image.FromStream(img);
    return returnImage;
}
        
protected void ddComapanyFilter_SelectedIndexChanged(object sender, EventArgs e)
{
    string id = ddlCountries.SelectedItem.Value;
    string constr = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;
    using (SqlConnection con = new SqlConnection(constr))
    {
       con.Open();
       SqlCommand cmd = new SqlCommand("SELECT * FROM RetPDF WHERE id = @id",con);
       cmd.Parameters.AddWithValue("@id", id);
       using (var reader = cmd.ExecuteReader())
       {
          if (reader.Read())
          {
              byte[] bytes = (byte[])reader["Data"];
              Image1.ImageUrl = ByteArrayToImage(bytes).ToString();
              con.Close();
           }

        }
    }
}