So I abandoned Ajax and used other techniques. The default file size limit is 4MB but you can change the default limit in a localized way by dropping a web. That way you don't have to make your whole site allow huge uploads doing so would open you up to a certain kinds of attacks.
Just set it in web. In the below example I am setting the maximum length that to 2GB. Practically we don't often need to set the 2GB request length, but if you set the request length higher, we also need to increase the executionTimeout.
Execution Timeout Specifies the maximum number of seconds that a request is allowed to execute before being automatically shut down by ASP. Default time is seconds. NET Settings Schema. Now if you want to show the custom message to user, if the file size is greater than MB. Finally, in web.
Indeed, a try catch won't help you. But here is a workaround : you could handle the error in your Global. This seems to be problem of session timeout, increase session time and then try again. You can set session timout in web. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow.
Learn more. Asked 10 years, 6 months ago. Active 5 years, 11 months ago. Viewed 16k times. So I need to solved this problem or a completely new solution. Jim G. Bob Avallone Bob Avallone 7 7 gold badges 20 20 silver badges 36 36 bronze badges. Add a comment. Active Oldest Votes. You can do it like.. ContentLength -- Return the size in bytes lblMsg. Off The Gold 1, 13 13 silver badges 27 27 bronze badges. Muhammad Akhtar Muhammad Akhtar I understand that I can increase the limit, but whatever I set someone can exceed it.
I want to give them a friendly message in that case. Archived Forums. Web Forms. Sign in to vote. User posted I have a fileupload control that works great but needs a little tweaking. Thanks for your help. Only supports jpg, gif, png and bmp. IO Imports System. Drawing Imports System. Exists UpPath Then Directory. Empty If filPhoto. Please limit size to kb.
IsNullOrEmpty script Then 'Uploaded file is valid, now we can do whatever we like to do, copying it file system, 'saving it in db etc. GetExtension filPhoto. To upload your logo, click Step 2 below. Please try again. NET is a server-side language so you cannot do anything until you have the file on the server. So what's left is client-side code javascript, java applets, flash? But you can't in pure javascript and the other solutions are not always "browser portable" or without any drawback.
It's a powerfull tool that has validation of image, size and most of what you need. You should also have some server side validation and client side can be tampered with. Why not to use RegularExpressionValidator for file type validation. Regular expression for File type validation is:.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Net Check file size before upload Ask Question. Asked 11 years, 6 months ago. Active 12 months ago. Viewed 73k times.
How can I do that? Thanks for your answers.. Add a comment. Active Oldest Votes. Please try to save again. SolidSnake SolidSnake 41 2 2 bronze badges. You can do this with javascript, which will not require an ugly postback, where as if you were to use FileBytes. Length you will encounter a postback after the end user has selected an image.
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