CZKEM does not contain definition (zkemkeeper-related)

Question

I am using the Standalone SDK from ZKTEco for a fingerprint scanner. I need to add some custom functionality.

I've downloaded the SDK along with the Demo project. Now when I try to build the Demo project, I get the following error

"Severity   Code    Description Project File    Line    Suppression State
Error   CS1061  'CZKEM' does not contain a definition for 'SetUserValidDate' 
and no accessible extension method 'SetUserValidDate' accepting a first 
argument of type 'CZKEM' could be found (are you missing a using directive 
or an assembly reference?)"

I have referenced the zkemkeeper.dll file in my project. I'm using VB 2017 on Windows 10. I've tried to look for Embed Interop Types property but I cannot find it in the properties ofzkemkeeper

How can I solve this issue? Any help would be appreciated.

Thanks

Answer 1

I order to make any project referencing the zkemkeeper compile, you need to register it in the windows system.

You should have received a bat file among the dll files called "Register_SDK" as shown in . This is used to register the zkemkeeper in windows. If not, then you must register it manually.

Please, read these posts:

Post 1

Post 2

There is also a starting guide for newbies already written by another member of this community, it´s written in c#.

Best regards.