CODEWITHSUNDEEP
c#asp.netfile-upload
Peter
Peter

Reputation: 447

How to persist file uploads after validation error?

I have a form that requires a file to be uploaded as well as additional data (name, etc...) with validation on these fields. When an error occurs, the file has to be re-uploaded. Is there a way to keep the file after a validation error occurs? This is built in C# .NET.

Tried to google this but nothing helpful came up.

Thanks in advance!

Upvotes: 1

Views: 2016

Answers (2)

puddleglum
puddleglum

Reputation: 1045

I'm taking a bit of a guess at what you're doing since you really can't persist a file... are you simply using a fileupload dialog box and taking it from there? If so, it's typical to put the file/path obtained from the dialog in a txt field, then do your post (upload) with a separate button.

This scenario assumes you want to persist the path/file name, but not the actual file.

Upvotes: 1

Abhijeetchindhe
Abhijeetchindhe

Reputation: 400

You can't genually persist the file because of Security Purpose.. If page is posted and validation error occured, check for a file using the .PostedFile property, and if one exists, save it to a temp file. In Session, store a reference to the temporary file. (use javascript)

.PostedFile is a property of the FileUpload control.

Also, during my google research, I found AJAX RadControl related to your question..

http://www.telerik.com/help/aspnet-ajax/asyncupload-persist-uploaded-files.html

Upvotes: 5

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