How to access client side scanner from server?

Reshma K

11y2.6k.NET

I have to create a web application in asp.net, that will be hosted on server and access client side scanner. The end users scan the images and scanned image is then uploaded to server. My web application is running successfully in single system. But when i hosted it in IIS and tried to access it from a client machine with a scanner attached to it, the application is not working.It is not able to access client side scanner.I am using WIA concept for scanning.

Can any one suggest a way to access client side scanner from server?

3 Replies

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Ramanujan Raghavan10y ago
You will need to install something on the client side because the browser cannot access the scanner directly. An OCX-based solution is similar in that manner because the OCX needs to be installed on the client side as well.

There is a free OCX solution here:
http://twainx.sourceforge.net/

One drawback is that OCX is only supported by some and not all versions of IE, and almost no other browsers. A more general approach installs a service at the client side that communicates with the browser and your web-based application. One such solution is this:
https://www.leadtools.com/help/leadtools/v19/dh/javascript/to/leadtools.topics.webscanning~wsc.topics.overviewwebscanningdemo.html

I don't know if there's a similar free solution.
Reshma K11y ago
I cannot use Paid third party tools. I tried out silverlight. But I am getting following error while running silverlight. "System.notSupportedException:This operation is not supported in current context." at line dynamic wiaDialog = AutomationFactory.CreateObject("WIA.CommonDialog"); I am getting result locally in out of browser mode. But i need In-Browser mode. Please Help..
Shubham Kumar11y ago
Another approach can be using a web-based scanner ActiveX/plugin. demo app you can try.

http://www.dynamsoft.com/demo/DWT/online_demo_scan.aspx