public class CustomHeader : IPageHeader
    {
        public PdfGrid RenderingGroupHeader(Document pdfDoc, PdfWriter pdfWriter, IList<CellData> rowdata, IList<SummaryCellData> summaryData)
        {
        }

    <asp:GridView ID="gvCities"
                runat="server"
                AutoGenerateColumns="False"
                ItemType="WebApplication3.City"
                SelectMethod="GetAllCities">
                <Columns>
                    <asp:TemplateField HeaderText="نام">
                        <ItemTemplate><%#: Item.Name %></ItemTemplate>
                    </asp:TemplateField>
                </Columns>
     </asp:GridView>

 public IQueryable<City> GetAllCities()
        {
            var context = new EFContext();
            var q = from c in context.City
                    orderby c.Name
                    select c;
            return q;
        }

 gvCities.DataBind();

   <asp:GridView ID="gvCities" 
                runat="server" 
                AutoGenerateColumns="False"
                AllowPaging="True" 
                PageSize="10" 
                ItemType="WebApplication3.City" 
                SelectMethod="GetAllCities">
                 <Columns>
                    <asp:TemplateField HeaderText="نام">
                        <ItemTemplate><%#: Item.Name %></ItemTemplate>
                    </asp:TemplateField>
                </Columns>
  </asp:GridView>

 public IQueryable<City> GetAllCities(int startRowIndex, int maximumRows, out int totalRowCount)
 {
        var context = new EFContext();
        var q = from c in context.City
                    select c;

        totalRowCount = q.Count();

        return q.OrderBy(x=>x.Name).Skip(startRowIndex).Take(maximumRows);
 }

 var container = ObjectFactory.Container;
GlobalConfiguration.Configuration.Services.Replace(typeof(IHttpControllerActivator), new StructureMapHttpControllerActivator(container));

 Example

Saving text

var blob = new Blob(["Hello, world!"], {type: "text/plain;charset=utf-8"});
saveAs(blob, "hello world.txt");

using (var webClient = new WebClient { Encoding = Encoding.UTF8 })

var regex = new Regex(@"(?<=\s)\s+(?![^<>]*</pre>)");

var doc = new HtmlDocument
                {
                    OptionCheckSyntax = true,
                    OptionFixNestedTags = true,
                    OptionAutoCloseOnEnd = true,
                    OptionDefaultStreamEncoding = Encoding.UTF8
                };
doc.LoadHtml(content);