How to retrieve image from database

create table pictures 
(
pic image,
name varchar(50)
)

I am saving my images like this.

 protected void Button2_Click(object sender, EventArgs e)
        {
            if (FileUpload2.HasFile)
            {
                try
                {
                    string filename = FileUpload2.FileName;
                    string path = "~\\uploads\\" + filename.Trim();
                    FileUpload2.PostedFile.SaveAs(Server.MapPath("~\\uploads\\" + filename.Trim()));
                    
                    SqlConnection conn = new SqlConnection(connstr);
                    SqlCommand cmd = new SqlCommand("insert into pictures values('" + path + "', '" + filename + "')", conn);
                    conn.Open();
                    cmd.ExecuteNonQuery();
                    conn.Close();
                    Label1.Text = "file uploaded successfully";

But now i want to retrieve these images in a gridview from database.


SqlConnection conn = new SqlConnection(connstr);
            
            SqlCommand cmd = new SqlCommand("select pic from picture", conn);
            conn.Open();
            Byte[] img = (Byte[])(cmd.ExecuteScalar());
            GridView2.DataSource = img;
            GridView2.DataBind();
            conn.Close();