Export html content to excel with unicode suport

To export html content to excel with unicode support follow the code below:

Response.Clear();

Response.AddHeader("content-disposition","attachment;filename=Test.xls");   

Response.ContentType = "application/ms-excel";

Response.ContentEncoding = System.Text.Encoding.Unicode;

Response.BinaryWrite(System.Text.Encoding.Unicode.GetPreamble());

System.IO.StringWriter sw = new System.IO.StringWriter();

System.Web.UI.HtmlTextWriter hw = new HtmlTextWriter(sw);

FormView1.RenderControl(hw);

Response.Write(sw.ToString());

Response.End();