How to implement ArrayList in vb.net using console

Question

Dim allOrder As ArrayList = New ArrayList() is seamlessly working on my desktop visual studio. But in mobile Dcoder app or any vb.net compiler it says the error! Please somebody help me how to use collections on vb console in mobile compiler. [81479-screenshot-2021-03-25-17-01-12-43-5b2419c719731733.jpg][1] [1]: /api/attachments/81479-screenshot-2021-03-25-17-01-12-43-5b2419c719731733.jpg?platform=QnA

Answer 1

You would need at the top of the code file

    Imports System.Collections

Answer 2

I would recommend using a List(Of T) rather than an ArrayList. No matter the following example is .NET Framework 4.8 with the standard references which if missing in the Docker container need to have them available.

In the code below you can use conventional methods to add items while I hard coded via the from clause.

Module Module1  
  
    Sub Main()  
        Console.WriteLine("List")  
        For Each item As String In ListExample()  
            Console.WriteLine(item)  
        Next  
  
        Console.WriteLine()  
  
        Console.WriteLine("ArrayList")  
        For Each aItem As Object In ArrayListExample()  
            Console.WriteLine(aItem)  
        Next  
  
        Console.ReadLine()  
  
    End Sub  
  
    Function ListExample() As List(Of String)  
        Return New List(Of String) From {"Karen", "Anne", "Mike"}  
    End Function  
    Function ArrayListExample() As ArrayList  
        Return New ArrayList From {"Karen", "Anne", "Mike"}  
    End Function  
  
End Module