Update OCR Engine to Omnipage (Leadtools 20) for Winforms application written using Leadtools 14.5

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This topic and its replies were posted before the current version of LEADTOOLS was released and may no longer be applicable.

#1 Posted : Thursday, August 23, 2018 1:10:59 AM(UTC)

adamts13

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Posts: 2

We have an in-house document system which was developed using Leadtools 14.5 for .net in windows forms.

We would like to look at the possibility of splicing in a more modern / accurate ocr engine that is available with Leadtools 20. We are only looking to update the OCR aspects of the system to minimize development.

I have created a separate project which contains routines that should produce ocr results for a given document but I am struggling to overcome the conflict between different versions of the same leadtools.dll that exist in the same solution. Specifically I get an error like:

Could not load file or assembly 'Leadtools, Version=20.0.4.0, Culture=neutral, PublicKeyToken=9cf889f53ea9b907' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference[/i]

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Does anyone have experience configuring a solution to use different versions of the same leadtools.dll in a .net solution?

Thanks in advance

Adam


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#2 Posted : Thursday, August 23, 2018 3:14:37 PM(UTC)

Josh Clark

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You could try splitting your solution into two different projects that interact with each other, one in v14.5 and the other in v20. However, it is widely unrecommended to mix versions of an assembly in the same solution. You should instead create a new application referencing only the version 20 DLLs.

Josh Clark
Developer Support Engineer
LEAD Technologies, Inc.

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