How can I show up OpenFileDialog class in ASP.NET?

Question

I want to show up an OpenFileDialog box in my ASP .NET web application. I am writing in c#. I want to create a user account with an image so I need to select image from my computer and save it into a database. How can I implement it.

You're looking for a FileUpload element.. not an OpenFileDialog (which is WinForms). — Simon Whitehead, Oct 16 '12 at 12:15
@RQDQ: it's explicitely stated in the question that the app is ASP.NEt — Steve B, Oct 16 '12 at 12:18

score 8 · Accepted Answer · answered Oct 16 '12 at 12:18

You can do that using

   <input type="file"  id="fileLoader" name="files" title="Load File" ...

The usual trick is to make it invisible, and on clicking some visible artifact (styled link, image, button... whatever) simulate a click on fileLoader:

 $("#fileLoader").click();

score 3 · Answer 2 · edited May 23 '17 at 10:27

3

you cannot use that Windows Forms class in ASP.NET, you should use the FileUpload class/control.

Or see other alternatives: Uploading Files in ASP.net without using the FileUpload server control

edited May 23 '17 at 10:27

Community

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answered Oct 16 '12 at 12:16

Davide Piras

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score 2 · Answer 3 · answered Oct 16 '12 at 12:15

2

You cannot. OpenFileDialog is something for desktop applications.

answered Oct 16 '12 at 12:15

John Saunders

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it's clear that OP is asking about *analogy*. He's just "navigating in space", searching for some solution. – Tigran Oct 16 '12 at 12:20
1

@Tigran: you may be right, but I think you and I have different definitions of the word "clear". – John Saunders Oct 16 '12 at 19:17

score 0 · Answer 4 · answered Jul 03 '15 at 15:40

Almost the same as Tigran's above but I found I needed to change the JavaScript slightly to use getElementById("...") to identify the button to click(). If I just did this in HTML/CSS Tigran's code worked fine but when I used it within an .aspx file I required the change.

.aspx

<input type="file" id="fileLoader" name="files" title="Load File" />   
<asp:Button ID="LoginButton" runat="server"  Text="ASP click Me" onclientclick="openfileDialog()"  />

JavaScript

function openfileDialog() {
         document.getElementById("fileLoader").click();
     }

css

#fileLoader{
display:none;}

How can I show up OpenFileDialog class in ASP.NET?

4 Answers4

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