c# - How do you query for Array Tags using Proficy Historian 5.5 ihuapi.cs? -


array tags introduced in proficy historian 5.5. additionally, sample code provided access user api (ihuapi.dll). sample code comes in form of:

1) c++ header file (ihuapi.h) along sample programs.
2) c# wrapper file (ihuapi.cs) along sample programs.

these files not contain same functionality. header file (ihuapi.h) contains references various data types (ihudatatype) including new array type ihuarrayvalue, c# file not.

if compile of sample applications use ihuapi.cs , attempt query values array tag, receive exception, "unsupported valuedatatype". because there no provision array data type in ihuapi.cs file.

in addition getting exception message, api code tell how many data samples returned query , timestamps of samples. exception when try read values of samples. appears memory pointer unknown kind of structure behind pointer.

how can ihuapi.cs file extended support querying array tags?


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