Table columns disappear by using keycolums

Question

Hi there,
i have the following problem on my stack14 pde. I visualize a htmlb tableview inside a jspdynpage, hide a key column by using the method tv.setColumnInvisible("id"); and it works. the tablemodel is stored inside a bean with scope session.
if i request this dynpage again, e.g. by clicking a button and visualize the tableview twice the last column dissapear.
Any ideas, what's going wrong?
Thanks in advance!

Answer 1

problem solved, if someone interesed...
the default table model has a column vector and a visible column vector. if you hide a column by name, then by SAP implementation the runtime drop the column by index, e.g. "id" is the first, causes the first column is dropped. in the second run on the table hiding the column "id" - default table model is really clever and drop the first colum again --> this causes the error
--> suggestion to SAP core implementation, check before droping the columns from vector visiblecolumns, if still exist. this would avoid some unlike behaviour.
good night!