Accessing DIAdem Connectivity Library with C#

How do you call the method "DDC_GetChannelGroups" in the "nilibddc.dll" correctly with c#?
The method takes three arguments:
1. file handle (integer)
2. group handles (array of group handles)
3. length of array mentioned above
The first argument is ok.
But what kind of data structure should i pass as the second argument. I've tried Int32, but if the array contains more than one argument (even though i know there is more than one group) the method fails.
How am i supposed to know how many channel groups there are in a given file beforehand anyway (this is a lesser problem though, because even when i know the exact number of groups it doesn't work).

hi slate
did you manage to connet this dll via c#?
i have this problem
http://forums.ni.com/ni/board/message?board.id=60&thread.id=11821

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DDC_GetNumDataValues in DIAdem Connectivity Library

Hi,
I want to import a TDMS file (attached) into MATLAB using the sample script "ReadFile.m" by NI. The number of values in the channels are more than 1000. Nevertheless, I get the output only for first 1000 values. I looked into the script and found the variable "numvals" that gets the value 1000 when I run the script. This is the result of the DIAdem Connectivity Library function "DDC_GetNumDataValues". Something must be wrong with this function. Is there a way to see the function itself, otherwise how can I cope with this problem?
Thanks in advance, Kadir
Attachments:
Bruxelles_09072013_9_15.tdms ‏3982 KB

Hello Kadir,
we could reproduce the issue with your file.
There will be a new release of the ddc lib that would show up this year and will contain an fix for this behavior.
Would this be O.K. for you to wait till ddc lib ships?
Greetings
Andreas
P.S.: The only workaround that I currently think of is load/saveas the file with NI DIAdem to make it work with this DDC standalone version.
P.P.S.: The file would load with NI CVI DDC but the standalone version of ddc lib has this behavior :-(

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* Revised 2/28:
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You cannot. You will need to update your computer to OSX 10.5 at least so you can run a newer iTunes version.
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lagomery
Welcome to the Apple Discussions.
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Regards
TD

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this is an extention of my previous question.

Mikey,
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http://www.ni.com/ask

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Hi,
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http://www.ni.com/ask

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tt2

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Accessing DIAdem Connectivity Library with C#

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