一个简单的graph中column的问题

e.g.:

public subroutine wf_set_a_series (string as_title, string as_value, string as_category);long ll_row, ll_index
int li_series_num

li_series_num = gr_1.addseries (as_title )

if li_series_num < 1 Then Return
ll_row = RowCount (dw_1)
For ll_index = 1 to ll_row
gr_1.adddata (li_series_num, dw_1.GetItemNumber (ll_index , as_value), &
dw_1.GetItemString (ll_index, as_category))
Next