Providing index for item of checkedlistbox in for loop

Question

Please excuse me if this is quite infantile as I just started trying to learn vb.net within the last couple weeks.  I am having a terrible time trying to find direction for this via google method.

I'm trying to assign the text values of checked items within a checkedlistbox to an arraylist.

    Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click

        Dim boxValues As ArrayList
        Dim itemChecked As Object
        Dim itemsChecked As Integer = CInt(NameCheckedListBox.CheckedItems.Count.ToString)
        Dim i As Integer

        For i = 0 To itemsChecked
            Dim c As Integer = i
            boxValues(i).Add = NameCheckedListBox.CheckedItems.Item(c)
        Next

    End Sub

VBE debugger advises "Object reference not set to an instance of an object."

I had originally used i as NameCheckedListBox.CheckedItems.Item(i) and debugger was giving the same error as far as I could tell.  

Could anybody please correct me as how to assert the current value of i as the reference for NameCheckedListBox.CheckedItems.Item?

Answer 1

You haven't constructed boxValues, so it has the value "Nothing".  You can't use it until it's instantiated.

It isn't necessary to convert an integer to a string and then to an integer to get an integer.  This is better code: 

Dim itemsChecked As Integer = NameCheckedListBox.CheckedItems.Count.

Answer 2

You don't need two variables for the indexes. The maximum index value is always 1 less than the count.

        For i = 0 To itemsChecked - 1
            boxValues.Add = NameCheckedListBox.CheckedItems.Item(i)
        Next