I am trying to export pdf file using aspx and c#. I got the following error.

Cannot implicitly convert type 'System.Collections.Generic.List'' to 'iTextSharp.text.Element'

I have the following code

using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.html.simpleparser;

            StringBuilder strB = new StringBuilder();
            document.Open();

            if (text.Length.Equals(0))//export the text
            {
                GridView1.DataBind();
                using (StringWriter sWriter = new StringWriter(strB))
                {
                    using (HtmlTextWriter htWriter = new HtmlTextWriter(sWriter))
                    {
                        GridView1.RenderControl(htWriter);
                    }
                }
            }
            else //export the grid
            {
                strB.Append(text);
            }

using (TextReader sReader = new StringReader(strB.ToString()))
            {
                StyleSheet styles = new StyleSheet();
                List<Element> list = new List<Element>();

                list = HTMLWorker.ParseToList(sReader, styles);

                foreach (IElement elm in list)
                {
                    document.Add(elm);
                }
            }

I got the error in this line: list = HTMLWorker.ParseToList(sReader, styles);

It's the first time that I am trying to export pdf files. I tried to cast the list element , however this did not solve my error.

Any advice would be helpful!!!