Array Alternative

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  • Paul Cheetham
    #1

    Array Alternative

    Hi,

    I am writing an application that reads data from a PLC in a
    manufacturing plant.
    I use a control to communicate with the PLC, that returns an array of
    Short values.

    I do not always know the length of the data block that will be returned,
    and so cannot declare a suitable array. (As well as that, I believe
    re-dimensioning an array in VB.Net is very inefficient)

    Can anyone suggest a way of storing this data so it can then be manipulated?


    I am using .Net 1.1 and VS 2003


    Thankyou.

    Paul Cheetham
    Tags: None
    • Chris
      #2
      Re: Array Alternative

      Paul Cheetham wrote:[color=blue]
      > Hi,
      >
      > I am writing an application that reads data from a PLC in a
      > manufacturing plant.
      > I use a control to communicate with the PLC, that returns an array of
      > Short values.
      >
      > I do not always know the length of the data block that will be returned,
      > and so cannot declare a suitable array. (As well as that, I believe
      > re-dimensioning an array in VB.Net is very inefficient)
      >
      > Can anyone suggest a way of storing this data so it can then be
      > manipulated?
      >
      >
      > I am using .Net 1.1 and VS 2003
      >
      >
      > Thankyou.
      >
      > Paul Cheetham[/color]


      sounds like an arraylist is exactly what you need.
      take a look at it. Also some of the collection classes may help.
      Chris

        Comment

        • m.posseth
          #3
          Re: Array Alternative



          declaring the array with the result should work in my opinion

          pseudo code :::

          Dim shorts() As Short = Returningdata

          regards

          Michel Posseth [MCP]



          "Paul Cheetham" <PAC.News@dsl.p ipex.com> schreef in bericht
          news:OK1rkVlLGH A.3496@TK2MSFTN GP14.phx.gbl...[color=blue]
          > Hi,
          >
          > I am writing an application that reads data from a PLC in a manufacturing
          > plant.
          > I use a control to communicate with the PLC, that returns an array of
          > Short values.
          >
          > I do not always know the length of the data block that will be returned,
          > and so cannot declare a suitable array. (As well as that, I believe
          > re-dimensioning an array in VB.Net is very inefficient)
          >
          > Can anyone suggest a way of storing this data so it can then be
          > manipulated?
          >
          >
          > I am using .Net 1.1 and VS 2003
          >
          >
          > Thankyou.
          >
          > Paul Cheetham[/color]


            Comment

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