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Sharepoint Attachment Exceed Size C#

Posted on 2009-05-17
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Last Modified: 2012-05-07
Hi!
I am developing sharepoint webparts and would like to ask a question.

I have an upload control in C# and i have set the file limit in sharepoint adminsitration as 50MB.
When i attempt to upload a 60MB file, the sharepoint site will throw an exception.

Is there any where or idea how i can catch this exception and redirect to our custom error page or stop the upload and inform the user that the file is too large?
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Question by:darenceang
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Expert Comment

by:Jamie McAllister MVP
ID: 24410007
If you want to monitor the size of the file before upload it can be done with Javascript but it's not pretty;

http://www.kavoir.com/2009/01/check-for-file-size-with-javascript-before-uploading.html
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by:darenceang
ID: 24410367
am unable to run activex on my environment here.
Guess they think its a bigger risk.
Thus, my project dont allow it.

Any more other ways i can do a check without uploading the whole thing over?

I;ve heard someone saying about what packet size headers etc...
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LVL 31

Expert Comment

by:Jamie McAllister MVP
ID: 24410437
I've seen stuff related to packet size headers in PHP, but that doesn't help here! www.phpeasystep.com/phptu/3.html

I guess you're back to capturing the exception and displaying a custom error screen.

Easy way to display an error screen with a custom message is to use;

SPUtility.TransferToErrorPage(message)
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Accepted Solution

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darenceang earned 0 total points
ID: 24410515
But doing a try catch can only catch the exception after the WHOLE file is posted upwards?
Is that not?

Sorry... noob
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Expert Comment

by:Jamie McAllister MVP
ID: 24410585
That's right, but alas discounting the javascript/activeX route means we have no way (I'm aware of) of stopping an inappropriate file upload before it happens.

I had a look around for a JQuery method to do this, but it seems to come back to PHP or stuff like this;

http://www.pixeline.be/experiments/jqUploader/

But I'm guessing you can't use that.
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