Dynamsoft TWAIN Products

I use OnPostAllTransfers and onposttransfer for the same DWT plugin. The event 'onposttransfer ' invokes JS function (DynamicWebTwain_onPostTransfer) to do some refresh operation and the event 'OnPostAllTransfers' triggers DynamicWebTwain2_OnPostAllTransfers() JS function indicates the application that scanning is completed. Scan application turned ADF one, and I scanned 100+ pages continuously , the problem is scan controller contains only the last scanned images. previous 99 images are lost. If I dont use 'onposttransfer' event , things work well. But I had to use this event to send request to servlet to keep the session alive ( We had session time out issue when we scan large number of images)
Please see the code




thanks
Satheesh

Hi Satheesh,

To better pinpoint the cause of the problem, could you paste your code of onposttransfer here? Meanwhile, please check the following things:

1. MaxImagesInBuffer is set to the maximum number of images can be held in buffer. For instance, if you want to scan maximum 100 images, remember to set the value of the property to 100.
http://www.dynamsoft.com/help/TWAIN/Web ... Buffer.htm

2. Please make sure you didn't do any page refreshment or call the RemoveImage method in onposttransfer.

Hi Catherine

Thank you for the prompt reply.
I have solved this issue by resetting MaxImagesInBuffer to 1024. I use DWT 6.0 which do not support 4096 images as you claimed.
But I have Memory not enough error when exporting gray images to servlet. I have 2 Gig RAM. I posted this query as separate question

300-grayscale-images-gives-not-enough-memory-to-perform-oper-t5321.html

Looking for your quick reply
Thanks
Satheesh

Hi Satheesh,

Glad to hear that the first problem has been solved.

As for the memory not enough error, please find my answers here:
300-grayscale-images-gives-not-enough-memory-to-perform-oper-t5321.html