vb.net - Visual Basic - DropDown text not altered to reflect value -

i working in vb , have event supposed update number of values in dropdown, , update text accordingly:

        integer = 0 (prices.items.count - 1)             if prices.items(i).text.contains("£")                 dim dconvertedvalue = gettextasdouble(prices.items(i).value) / dconversionrate                 prices.items(i).value = dconvertedvalue.tostring()                  'should update displayable text here, no change                 prices.items(i).text = (math.floor(dconvertedvalue).tostring("n") & "$")             end if         next 

this works fine in theory, , have stepped-through , can see values changing expected. however, dropdown not update @ point.

i'm new vb, simple syntax error. know why might be?

mark

try using have used exact code changed loop 'for each'

for each item listitem in prices.items     if item.text.contains("£")         dim dconvertedvalue = (gettextasdouble(item.value) / dconversionrate)         items.value = dconvertedvalue.tostring()         items.text = (math.floor(dconvertedvalue).tostring("n") & " sq m")     end if next