how to insert files as varchar into sqlserver2008

if (FileUpload1.FileName != "")
       {
           string filePath = Server.MapPath("~/pp/") + FileUpload1.FileName;
           string ext = Path.GetExtension(FileUpload1.FileName);

           switch (ext)
           {
               case ".doc":
                   contenttype = "application/vnd.ms-word";
                   break;

               case ".docx":
                   contenttype = "application/vnd.ms-word";
                   break;
           }
           FileUpload1.SaveAs(filePath);
           StreamReader myFile = new System.IO.StreamReader(filePath);
           myString = myFile.ReadToEnd();

           myFile.Close();