SaveSelectedImagesToBytes problem

awm · **Joined:** Mon Jun 14, 2010 4:34 pm **Posts:** 2

Hi,

I need to obtain image data in javascript. I use the following code:

var size = aspnetForm.DynamicWebTwain1.GetSelectedImagesSize(0);
var ary = new Array(size);
var received = aspnetForm.DynamicWebTwain1.SaveSelectedImagesToBytes(size, ary);

However SaveSelectedImagesToBytes returns 0, and ErrorString is ''Invalid value". What are possible reasons of this error?

Catherine · **Joined:** Tue Mar 08, 2005 12:23 am **Posts:** 1075

Hi,

Please change your code to:

Code:

var size = aspnetForm.DynamicWebTwain1.GetSelectedImagesSize(0);
var ary = new Array(size);
for (var i =0; i<size; i++)
    ary[i] = 0;
aspnetForm.DynamicWebTwain1.SaveSelectedImagesToBytes(size, ary);

Please let me know how it works for you.

Thanks.

awm · **Joined:** Mon Jun 14, 2010 4:34 pm **Posts:** 2

Yes, it works. Thanks a lot.

And one more question. As I see, trial version has developer license and it doesn't work on server. Is there way to test distribution of the TWAIN ActiveX with trial?

In addition: ActiveX has been loaded and installed, but it shows error "Your Dynamic Web TWAIN serial number is invalid". All security settings are set to Enable or Promt, lpk file is generated and placed on server. Webbrouser is IE8

Catherine · **Joined:** Tue Mar 08, 2005 12:23 am **Posts:** 1075

Hi awm,

Quote:

Is there way to test distribution of the TWAIN ActiveX with trial?

Yes, you can deploy Dynamic Web TWAIN using the trial license. It's not limited.

Quote:

ActiveX has been loaded and installed, but it shows error "Your Dynamic Web TWAIN serial number is invalid".

Have you checked the following page for this error? If not, please take a look at it:
http://kb.dynamsoft.com/questions/45/Er ... is+invalid

If the issue persists, please contact us at livehelp:
http://www.dynamsoft.com/support/livehelp.aspx

Best.

Dynamsoft TWAIN Products

SaveSelectedImagesToBytes problem

Who is online