HTML uploads multiple files

1. Page

<span style= "float:left;text-align:left;" id= "spanfilelist" > <input type= "button "Value=" Add Attachment "onclick=" AddFiles () "style=" margin-top:5px; margin-left:5px "/><br/> </span>

2.js

Add an attachment

function AddFiles () {

var fileList = document.getElementById ("Spanfilelist");

var file = document.createelement ("input");

File.setattribute ("type", "File")

File.setattribute ("name", "File")

File.setattribute ("Runat", "server")

Filelist.appendchild (file);

var br = document.createelement ("BR");

Filelist.appendchild (BR);

}

3. Background code

 httpfilecollection files = httpcontext.current.request.files;                          String returnvalue = "";                          webbindinglist<itemuploadfilemodel> lst_file = new Webbindinglist<itemuploadfilemodel> ();                          string FilePath = CDHB. Common.Config.ConfigHelper.GetConfigString ("FilePath");                          try                           {&NBSP;&NBSP;&NBSP;&NBsp;                         //Fetch,        from the third start when indexing                       for (int IFile = 0; IFile < files. Count; ifile++)                               {                                   Httppostedfile uploadedfile = files[ifile];                                  if (!string. IsNullOrEmpty (uploadedfile.fileName))                                   {                                       String filename = uploadedfile.filename;                                       string ext = filename. Substring (filename. LastIndexOf ("."));                                       string filesize = "";                                       Decimal n_filesize = 0;                                       if (uploadedfile.contentlength > 0)                                        {                                           filesize = uploadedFile.ContentLength.ToString ("n2") + "B";                                           if ( Uploadedfile.contentlength >)                                            {                                               N_ FileSize = Convert.todecimal (uploadedfile.contentlength)/1024;                                               filesize = n_filesize. ToString ("n2") + "KB";                                          }                                           if (n_filesize > +)                                             {                                               n_filesize = n_filesize/1024;                                                FileSize = n_filesize. ToString ("n2") + "M";                                          }                                           if (N_filesize >  &nbs)p;                                         {                                               n_filesize = n_filesize/1024;                                                filesize = n_filesize. ToString ("n2") + "G";                                         }                                          // Get current year month                                            string str = DateTime.Now.ToString ("yyyymm");                                           string Strgui;                                           String strpath = HttpContext.Current.Server.MapPath (FilePath + str);                                          //Create   If the source folder does not exist                                           if (! Directory.Exists (strpath))                                            {                                              Directory.CreateDirectory (strpath);                                          }                                          //re-assign file name                                             String guidname = GuiD.newguid () + ext;                                           Strgui = str + "/" + guidname;                                           Uploadedfile.saveas ( Server.MapPath (FilePath + Strgui));                                           returnvalue = filename + "|" + FilePath + Strgui;

                                          Itemuploadfilemodel file = new Itemuploadfilemodel ();;                                           file. Id = Guid.NewGuid (). ToString ();                                           file. ItemId = rvalue;                                          file. Itemfilename = filename;                                           file. Itemfilesize = filesize;                                           file. ITEMFILESRC = FilePath + strgui;                                           file. Uploadtime = DATETIME.NOW;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBsp;                            file. Createtime = datetime.now;                                           Lst_file. ADD (file);                                      }

}} exhibitionregister.additemfile (Lst_                         file); }

Note:

1.js Add input Yes, the Name property must be

2.form add enctype= "Multipart/form-data".

HTML uploads multiple files