ASP.NET VB Consume Web Service "Error Object reference not set to an instance of an object"


I'm trying to consume a web service and am having a problem with one part.  Basically when trying to set a value to an array I get the above error.  

Basically I'm placing an order and within there I have to specify a product and its sub components.  Although I can add the product fine its the sub components I'm having an issue with.

My Code below:

        Dim Prod As New Product
        Prod.ProductCode = "1234"
        Prod.ProductName = "Thing"

        Dim Comp_Cont As New ComponentContainer
        Comp_Cont.ComponentContainerCode = "4321"
        Prod.ComponentContainer(0) = Comp_Cont

I guess the question is how do I add my record to the array?

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käµfm³d 👽Commented:
You need to allocate space for the array prior to adding values to it. Since arrays are fixed in size and cannot be re-sized without creating a new array, you need to determine how many elements will go into your array. In the simplest case, you show one element being added, so allocation might be:


Dim Comp_Cont As New ComponentContainer

Comp_Cont.ComponentContainerCode = "4321"
Prod.ComponentContainer = new Product(0) ' 0 means upper bound, not how many elements
Prod.ComponentContainer(0) = Comp_Cont

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