How Do I: Multiple File Uploads in ASP.NET 2

In this video when you list the uploaded images, in uploaded folder, Only the name of the files are different,but the images looking identical . Is that a problem with my browser, or you skipped that one?

Interesting, however I fail to see any ASP.NET 2 specific innovation.  When I saw the title I thought for a minute the IE browser's common file dialog was going to support multiple file selections.  Now that would be video worthy!  It would really be a powerful enhancement and a huge step forward for browser-based applications.  I'm sure this will be a much appreciated feature for Internet sites which take a long time to upload individual files.  However for Intranet sites where the actual posting of files is quick the differences between hitting an upload button five times versus requesting 4 additional inputs then hitting an upload button is hardly worth the effort.  The frustration exits because the OS version of the common file dialog (multiple file selection, file type filtering at the dialog level, etc.) is much more robust than the browsers.

There's an error in the C# code available for download at line 31. There's no variable named 'file', instead it should be 'uploads[i]' in place of 'file'.

sagesmith - It's not new magic. Jst a series of techniques that developers can use.

pradeep - I know about the code error and the file is being updated. Thanks

I think a tutorial on how to do multiple uploads to a database would be a good idea.

Sorry there is a tutorial on doing this site.

Joe

I want to upload all files from a certain client-side folder. I do not want the user to have to data enter the file names as there could be many small files. Is there any way to do this via ASP.Net? In other words how do I populate the HttpContext.Current.Request.Files collection using client script?

I have asked several ASP.Net "gurus" abou this and they do not think it is possible due to browser security restrictions. Yet the upload control does it just fine.

Thanks

Hi  Joe,

Awesome video .. You  rock...

One thing  i  wanted to know is that  ..can we develop the same with ASP.NET's  FileUpload  Control    instead of HTMLFile Control....

Waiting for your reply..

Thanks..

This code doesn´t seem to work with c# in VS2008. It works uploading one file, but not several at one time.

I did as pradeepkr and changed 'uploads[i]' in place of 'file'.

I do get some strange warning, in the end of the behind code:

catch(Exception Exp)

           {

               Span1.InnerHtml = "Upload(s) FAILED.";

           }

"The variable 'Exp' is declared but never used"

Anyone else tried it in VS2008 with c#?

It's great !

However, if I just want to upload all files from a certain client-side folder, is there a video to show it?

This code dosen't actually work...

1. You are trying to assign HttpPostedFile to a varible called file which dosen't even exist.

2. You are only changing the filename of the saved file and not the actual file itself. So you are only uploading one file multiple times.

3. You are using Visual Studio 2008 which is .NET 3.5 and the video is labeled as ASP.NET 2.

Therefore this video is useless.

I have tried the C# code and it does NOT WORK!

Thanks for this video

The way you called javaScript function is beautiful.

works good on me, thank you very much

Thanks for the videos. It's awesome dude......

Hi, JoeStagner

C# Program not working.So can you fix that error on buttion click event.

-Thanks

I want to upload all files from a certain client-side folder. I do not want the user to have to data enter the file names as there could be many small files. Is there any way to do this via ASP.Net?

or

i wan to select multiple image at once....can u tell me another way.....if i hav folder which contains images......n i browse the folder and see the all the images of that folder in thumbanil in another form and then select multiple images or select all images(like we do while selecting or deleting files on harddisk) from that form and then insert into database???? is this possible??????

thanks....

Dear Joe,

Great Job but i am facing a problem.

I am inserting these uploaded files in a database,

and whenever i upload multiple files,i get all the different file names, but the picture or file itself is the same.

can you give me any tips??

any one help me upload files and save then to sql server

Hello,

I followed part 1 and 2, great job! :)

I'm trying to add a validation for the file type. I added this code on  btnSubmit_Click:

string FileExtention = System.IO.Path.GetExtension(upload.FileName);

if (FileExtention != ".jpg")

{

   lblMessage.Text = "only .jpg files";

   return;

}

I'm on the case when the user selects many files.

The thing is, when the user gets the message "only .jpg files", input controls are blank and the user has to select all the files all over again..

How do I keep the values on the input controls, so that the users corrects only the wrong selection(s)?

Thanks in advance.

Regards,

Sanaa RAMZI

Great Post, works like a charm. I was wondering how to adjust the javascript to have a remove button next to the upload field to remove those created uploadfields if desired.

Thanks heaps,

Chris

Great video.....

@ultravi0let

did you already solve ur problem, im having the same requirement.

can u please post your solution if any?

Using C# code under mvs2008:

Compiler does not like the

HttpPostedFile upload = file;

line, which quite obviously should be changed to

HttpPostedFile upload = uploads[i];

works for me.

In the C# code, it appears that the original <input> box is missing a 'name' attribute. Without this attribute, it doesn't seem to count the number of files correctly...at least for me.

It's very useful to me.

Thanks!

I guess there is a little problem.

every file is uploaded twice, but we don't note it as the second file overwrites the first one.

you can see it if you display the confirmation message for every upload using a loop or make an entry in database.

for each file there two entries in database.

Please someone correct it.

Thanks ! Jërëjëf !