[ASP.NET] refresh 帶參數的網頁

// html
//this line puts between < / head > tag
< asp : literal   id=metaLiteral  runat=server>< / asp:litera l>

//c#
metaLiteral.Text = < meta http-equiv=refresh content=5;URL=availablePeriodById.aspx?ad= + ad + &year= + year + >