Issue on Windows 8.1 x64 about twaindotnet HOT 9 CLOSED

I'm having the same issue. Did anybody find a solution or workaround?

from twaindotnet.

I am tracking the exact same issue... It just started with 8.1... Not having any issues with Win7.

from twaindotnet.

I found another .NET-TWAIN-Wrapper, called Saraff.Twain:
http://sarafftwain.codeplex.com/

Working flawless under Win7 64 Bit and I will test it now for Win 8.1 64 Bit. Documentation is russian :/ but Google Translate helps with most of it. I will report the results of my tests in a few days here.

from twaindotnet.

I managed to get it working again by tracking status for datasource. When the datasource is disposed there is a call to close it which will result in an access violation when the datasource has not been opened...

from twaindotnet.

I also had this problem. I fixed it by adding an "if" clause in the Close() method in the Datasource class a little.

result = Twain32Native.DsmIdentity(
_applicationId,
IntPtr.Zero,
DataGroup.Control,
DataArgumentType.Identity,
Message.CloseDS,
SourceId);

Becomes :
if (result != TwainResult.Failure)
{
result = Twain32Native.DsmIdentity(
_applicationId,
IntPtr.Zero,
DataGroup.Control,
DataArgumentType.Identity,
Message.CloseDS,
SourceId);
}

Hope this helps and does not break any good behavior.

from twaindotnet.

@vincenormand can you issue a pull request for that fix?

from twaindotnet.

Done

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Thanks :)

from twaindotnet.

This seems like a relevant update to this fix...

vincenormand@07ad9a7

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