[SerializableAttribute()] 
public class Product.MetaData 

Class MetaInformation
{
    protected System.Web.UI.WebControls.TextBox MetaTitle;
    protected System.Web.UI.WebControls.TextBox MetaKeywords;
    protected System.Web.UI.WebControls.TextBox MetaDescr;
    protected System.Web.UI.WebControls.TextBox MetaUrl;
    private Product product;
 
    public void GetMetaData()
    {
        product = new Product();
        product.Meta = new Product.MetaData();
        product.Meta.Title = MetaTitle.Text.Trim();
        product.Meta.Keywords = MetaKeywords.Text.Trim();
        product.Meta.Description = MetaDescr.Text.Trim();
        product.Meta.Url = MetaUrl.Text.Trim();
    }
}