c# adding multiple files to List

Question

I am working on a simple code to upload multiple files using single upload button (AllowMultiple="true"), and I am trying to add all the uploaded files to list, but the problem is only the first file is added without the other files.

asp.net

<asp:FileUpload runat="server" ID="file1" AllowMultiple="true" />

c#

PdfReader pdfReader1 = new PdfReader(file1.PostedFile.InputStream);
List<PdfReader> readerList = new List<PdfReader>();
readerList.Add(pdfReader1);

That's because you have added one reader to you reader list. You probably want to read files with reader. — Renatas M.
– Renatas M., Commented Mar 7, 2017 at 12:37
Maybe this will help: stackoverflow.com/questions/17441925/… — Mighty Badaboom
– Mighty Badaboom, Commented Mar 7, 2017 at 12:38
First, AllowMultiple="true" is a .Net 4.5 property. Are you sure to have it ? Below 4.5 it was something like Multiple="Multiple" (check on the MSDN). Second : you have to use the file1.PostedFiles collection to retrieve all files. — AFract
– AFract, Commented Mar 7, 2017 at 12:38

Maksim Simkin · Accepted Answer · 2017-03-07 12:38:29Z

3

With PostedFile you get only one item, use PostedFiles instead:

List<PdfReader> readerList = new List<PdfReader>();
readerList.AddRange(file1.PostedFiles.Select(f=>new PdfReader(f.InputStream)))

answered Mar 7, 2017 at 12:38

Maksim Simkin

9,7084 gold badges38 silver badges52 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Matias Cicero Over a year ago

OP: Make sure to close/dispose the readers after you are done with them.

Collectives™ on Stack Overflow

c# adding multiple files to List

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related