Adding current item id into db in sitecore

Question

I have ProductID column in my db and I want to add current item id to this column. I've tryed this, but it doesn't work:

private void InsertInfo()
    {

        SqlConnection conn = new SqlConnection(GetConnectionString());
        string sql = "INSERT INTO CommentsTable (Name, Email, Comment, ProductID) VALUES (@Name,@Email,@Comment,@ProductID)";
        try
        {
            conn.Open();
            SqlCommand cmd = new SqlCommand(sql, conn);
            cmd.Parameters.AddWithValue("@Name", TextBox1.Text);
            cmd.Parameters.AddWithValue("@Email", TextBox2.Text);
            cmd.Parameters.AddWithValue("@Comment", TextBox3.Text);
            cmd.Parameters.AddWithValue("@ProductID", Sitecore.Context.Item.ID.ToString());
            cmd.CommandType = CommandType.Text;
            cmd.ExecuteNonQuery();
        }

Thank's in advance.

Answer 1

If you're looking for the ID of the product you're currently browsing you can just use: Sitecore.Context.Item.ID. If you can't use that, you'll have to make sure that your querystring actually exists and has a value. With Sitecore you can use: Sitecore.Web.WebUtil.GetQueryString("id", string.Empty) where the string.Empty can be replaced with whatever you want the default value to be.