1 Reply Latest reply on Sep 1, 2015 9:54 PM by dng

    How to find the timestamp for tag's value equal to some value over SDK by using VB.net ?

    CSCT64

      Hi all,

       

         I would like to find the timestamp for fag's value equal to some value over SDK by using VB.net. I  have try to use IPICalculation function to find the answer as following code:

       

                    startTime = "y"

                    endTime = "t"

                    expr = "FindEQ('sinusoid', 'y', 't', 60)"

                    vals = IPICalculation.Calculate(startTime, endTime, expr, SampleTypeConstants.stRecordedValues, "")

       

         After calculation, the vals have 3 objects:

       

                   vals(0) = nothing

                   vals(I).TimeStamp  =  #8/31/2015# {Date}    <-  starttime = "y"

                   vals(2).TimeStammp = #9/1/2015# {Date}    <-  endTime = "t"

       

         But the right answer is #8/31/2015 12:25:30#

       

          How can I do with IPICalculation function in VB.net ?  Or, Does there have other method can to find the timestamp by using VB.net SDK ?

       

       

        Thank you.