define an array of input control in aspx.cs

Question

i have an input control of type file.

<input id="FileUpload1" type="file" runat="server" size="35" />

there are four input controls like this and in aspx.cs file i m trying to make an array of these ids..

i have made an array

HtmlInputFile[] fl = new HtmlInputFile[4] { FileUpload1, FileUpload2, FileUpload3, FileUpload4 };

but it gives me an error..how can i get the value of these inputs.

What are you trying to do ? I mean why do you need this array ? Do you need an ID array ? or control array ? and what exception do you get ? — Canavar
– Canavar, Commented Nov 26, 2009 at 15:56
when i try to get the filename through string filename = fl[i].PostedFile.FileName; it says object reference not set to an instance — Mishigen
– Mishigen, Commented Nov 26, 2009 at 15:58

Glorfindel · Accepted Answer · 2023-02-09 15:01:11Z

1

The

FileUploadX.PostedFile

Property is null if no file was uploaded. You need to check wether

FileUploadX.HasFile == true

before attempting to access it.

In case you are using ASP.Net AJAX updatepanels, you'll run into all sorts of proplems with FileUpload. See Link for possible solutions

Glorfindel

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answered Nov 26, 2009 at 16:06

Manu

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