Linked List for Visual Basic

  • 11 years ago

    How do you write code to implement a linked list?

  • 11 years ago
    Hi this is wikram,

    well buddy as u must be nowing that in a linked list ther are two fields one for data and other for the address of the second iteh of the linked list the variable in which u store the addres of the next is a pointer variable and pointers are not provided by VB. so i guess that u cant implement a linked list in VB try using arrays instead
  • 11 years ago

    Actually, it is possible to implement a Linked List in VB by using Classes.  Simply have a property that is of the Class type and use it as the Next pointer.

    '::: Class Declaration
    Public Class LLClass
     Dim NextEntry As LLClass
     Public Sub ClassInitialize()
       Set NextEntry = Nothing
     End Sub
     Public Sub Class
       Set NextEntry = Nothing
     End Sub
    End Class

    '::: Code
    Dim FirstEntry As LLClass
    Dim temp As LLClass
    Dim temp2 as LLClass

    Set FirstEntry = New LLClass
    Set temp = New LLClass

    '::: increase the linked list
    Set FirstEntry.NextEntry = temp

    '::: add another
    Set temp = New LLClass
    Set FirstEntry.NextEntry.NextEntry = temp
    '::: or...
    Set temp2 = FirstEntry.NextEntry
    Set temp2.NextEntry = temp

    '::: Loop through the list
    Set temp = FirstEntry
    Do While Not (temp Is Nothing)
     '::: operate against the LL entry
     Set temp = temp.NextEntry

    '::: Done

    This is untested code, but it should work just fine.

Post a reply

Enter your message below

Sign in or Join us (it's free).


Why not write for us? Or you could submit an event or a user group in your area. Alternatively just tell us what you think!

Our tools

We've got automatic conversion tools to convert C# to VB.NET, VB.NET to C#. Also you can compress javascript and compress css and generate sql connection strings.

“It is practically impossible to teach good programming style to students that have had prior exposure to BASIC. As potential programmers, they are mentally mutilated beyond hope of regeneration.” - E. W. Dijkstra