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., Mar 07 '17 at 12:37
Maybe this will help: http://stackoverflow.com/questions/17441925/how-to-choose-multiple-files-using-file-upload-control — Mighty Badaboom, Mar 07 '17 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, Mar 07 '17 at 12:38

score 3 · Accepted Answer · answered Mar 07 '17 at 12:38

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 07 '17 at 12:38

Maksim Simkin

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OP: Make sure to close/dispose the readers after you are done with them. – Matias Cicero Mar 07 '17 at 12:40

c# adding multiple files to List

1 Answers1