Display image from database in Image control without using Generic Handler in ASP.Net

how to display images stored in database in ASP.Net Image control 

 byte[] bytes = (byte[])GetData("SELECT Data FROM tblFiles WHERE Id =" + id).Rows[0]["Data"];

        string base64String = Convert.ToBase64String(bytes, 0, bytes.Length);

        Image1.ImageUrl = "data:image/png;base64," + base64String;