Concatenate values from a listbox into a cell

Thank you! This works almost perfectly and is similar to one of the codes I tried before. My only issue is that I can't have a space after the comma separating the concatenated values. When I remove the space from the code, it cuts off the first digit of the first concatenated value.

If lbx.Selected(i) Then
s = s & "," & lbx.List(i)

For instance if I select A080 and A092 the value in C7 would read 080,A092