Cannot get decimal entries from array to appear in listbox - vb.net

Question

In my VB class we've been asked to set up an array which is populated by user entries. These entries are decimal type, meant to be gas prices. There are twelve, one per month. The entries are supposed to show up one at a time, as they are entered and processed, in a list box.
I've got them showing up but they're not showing up properly. Instead of 4.55 (or whatever), the entries show up as "Decimal[] Array" (minus the quotation marks, of course).
How can I get the entries to show up properly? The code is below and it's very incomplete as I'm only about a third of the way into the project, so don't sweat that unless you see some horrible problem sticking out like a sore thumb.
Public Class GasPrices
Dim prices(11) As Decimal
Private Sub EnterButton_Click(sender As Object, e As EventArgs) Handles EnterButton.Click
prices(PriceList.Items.Count) = Convert.ToDecimal(PriceText.Text)
PriceText.Clear()
For i = 0 To 11
prices(i) = i
Next i
PriceList.Items.Add(prices)
End Sub
Private Sub PriceList_SelectedIndexChanged(sender As Object, e As EventArgs) Handles PriceList.SelectedIndexChanged
PriceList.Items.Clear()
PriceList.Items.Add(prices)
End Sub
End Class

Answer 1

You're adding the entire array as one "entry". You'd need to add each individual entry instead using syntax like you've got where you access prices(i) in the loop.
Public Class GasPrices
Private prices(11) As Decimal
Private Sub EnterButton_Click(sender As Object, e As EventArgs) Handles EnterButton.Click
If PriceList.Items.Count < 12 Then
Dim price As Decimal
If Decimal.TryParse(PriceText.Text, System.Globalization.NumberStyles.Currency, Nothing, price) Then
prices(PriceList.Items.Count) = price
PriceList.Items.Add(price)
PriceText.Clear()
PriceText.Focus()
Else
MessageBox.Show("Invalid Price!")
End If
Else
MessageBox.Show("12 entries have already been entered!")
End If
End Sub
Private Sub PriceList_SelectedIndexChanged(sender As System.Object, e As System.EventArgs) Handles PriceList.SelectedIndexChanged
If PriceList.SelectedIndex <> -1 Then
Label1.Text = PriceList.SelectedItem
End If
End Sub
End Class

Answer 2

It's quite simple. With Add you add the array itself as single object to the listbox. The listbox's default behavior is to show object.ToString for each entry. And since the object is an array of decimals, you get the unwanted output.
If you want to add the elements of an array to a list, listbox, ... you use the AddRange method instead.