Classical Dynpro: GUI with column tree

[Former Member]

Hi everybody,

i implemented a GUI with a column tree based on the SAP sample SAPCOLUMN_TREE_CONTROL_DEMO which you can find in SE80. I copied this program and modified it.

My application has two tables, one with header items and one with line items. I display the header items as folders in the tree structure and the correspondent line items as items. This works fine so far, but only with the first folder i open. If I open a second folder, no items are displayed.

I added the items of the folder within the method handle_expand_no_children.

I already debugged the program, it seems that everything wends fine within the mentioned method.

Does anybody have an idea where the problem might be?

Thanks for your help in advance!

Regards,

Martin

[Former Member]

Hi,

I found the reason for the problem. The keys of my chil-nodes were not unique.

Regards,

Martin