asked on

How to Add to a SortedList

Hi Everyone

Could someome please explain why I get the Error "Object reference not set to an instance of an object" in the following code ...

====================

      Dim InputFrom As String = ""
            Dim Pos As Short = 0
... ...

            For i As Int16 = 1 To 24
                  InputFrom = LineInput(Ch("QuestionAnswer"))
                  Pos = InStr(InputFrom, "/")
                  QuestionAnswer.Answer = Mid(InputFrom, Pos + 1)
                  QuestionAnswer.Question = InputFrom.Substring(0, Pos - 1)
                  SortedDict(QuestionAnswer.Answer) = QuestionAnswer.Question
                  SList.Add(QuestionAnswer.Answer, QuestionAnswer.Question)
            Next

=======================

The error occurs on the line begininng with SList.

The variables QuestionAnswer.Answer and QuestionAnswer.Question seem to be fine, in that hovering over them shows them to be correct.

Thank you

Karl

Paul Jackson

Where and How have you declared SList

KarlTheHopeless

ASKER

Hi Jacko

This is declared right at the beginning of the Class.

==============

Public Class frmpupwork
Inherits System.Windows.Forms.Form
Public SList As New SortedList(Of String, Object)

============

Karl

ASKER CERTIFIED SOLUTION

Paul Jackson

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

KarlTheHopeless

ASKER

PERFECT

Thank Jacko

KarlTheHopeless

ASKER

Thanks Jacko.