Dynamically add Upload button, upload multiple files

Upload Multiple files <script language= "javascript" type= "Text/javascript" > function Faddattach () { var gattchhtml= ' <div class= "Qrle text2" > Accessories: </div><div class= "le" ><input type= "file" runat= " Server "Name=" attachfile[] "class=" bot3 "></div><div class=" le "><input type=" button "Name=" Submit " value= "Delete" "class=" Bot2 "id=" Btndeletereadattach "/></div><span></span>"; var Attach=document.getelementbyid ("Dvreadattach"); var spnlist=attach.getelementsbytagname ("SPAN"); var spn=document.createelement ("DIV"); Spn.classname= "QRC4"; spn.innerhtml=gattchhtml; Spn.childnodes[1].childnodes[0].name= "attachfile[]" + spnlist.length; Attach.appendchild (SPN); Increase gattchhtml Fgetobjinputbyid (SPN, "Btndeletereadattach"). () {Fdeleteattach (this);}; document.getElementById ("Aaddattach"). Innerhtml= "Continue to add attachments"; Attach.style.display= ""; if (spnlist.length>1) { Spn.childnodes[0].innerhtml= "&nbsp;&nbsp;&nbsp;"; } } function Fgetobjinputbyid (obj,id) { var inputlist=obj.getelementsbytagname ("INPUT"); for (Var i=0;i<inputlist.length;i++) { if (Inputlist[i].id==id) { return inputlist[i]; } } return null; } function Fdeleteattach (obj) { try{ Obj.parentNode.parentNode.parentNode.removeChild (Obj.parentNode.parentNode); var Attach=document.getelementbyid ("Dvreadattach"); var spnlist=attach.getelementsbytagname ("SPAN"); if (spnlist.length==0) { document.getElementById ("Aaddattach"). Innerhtml= "Add Attachments"; Attach.style.display= "None"; }else{ document.getElementById ("Aaddattach"). Innerhtml= "Continue to add attachments"; } }catch (exp) { Fdebug ("Fdeleteattach", exp.description); } } </script> <a href= "Javascript:faddattach ();" id= "Aaddattach" > Add attachment </a><div id= "Dvreadattach" Display: None "> </div> <asp:button id= "Button1" runat= "Server" text= "button"/> httpfilecollection files = HttpContext.Current.Request.Files; for (int i = 0; i < HttpContext.Current.Request.Files.Count; i++) { Httppostedfile hp = (httppostedfile) httpcontext.current.request.files[i]; }