Drop Down in webDynpro.

Question

Hi experts ,
I wana get help on drop down. I have got an internal table which has all the company code related to the user who has loged in UI. I want to display that internal table as drop down. Please provide me a solution .

Answer 1

Hi Madhvi,
I understand that you have an internal table which has the company codes. There are two scenarios here.
Scenario 1
You have only one field in the internal table, i.e., company code.
Here you can make use of the WebDynpro UI element DropDownByIndex. Here you will have to define a node in the context of cardinality 0:n, and an attribute of the type similar to the company code.
Once you have done that, insert the DropDownByIndex element in the Layout, then bind the texts property of the same to the attribute (company code).
Now the coding.
Declare a supply function for the node. Write the code for binding the value in the internal table into the node.
Here, you will get the company codes as a drop down.
Scenario 2
You have only two fields in the internal table, i.e., company code and company code description
And you want to display the description in the dropdown but use the code for processing in the background.
In this particular scenario, you can make use of the DropDownByKey UI element. The dropdown node will have two attributes, one for the company code and the other for the description.
The company code attribute will be bound to the key property of the UI element. Here again, its advisable to use a supply funciton.
Coding:
Declare a workarea of type wdy_key_value, say, wa_key_value and an internal table of type wdy_key_value_table, say, lt_key_value_table.
Assuming the internal table of the company code is lt_company_code, <fs_compay_code> the workarea and the fields are  comp_code and comp_desc, comp_code being the company code and comp_desc being the company code description.
node is the reference of the drop down node.
DATA: lt_key_value_table TYPE wdy_key_value_table,
          lt_company_code TYPE (table_type of comany code with the above mentioned fields).
DATA: wa_key_value TYPE wdy_key_value.
FIELD-SYMBOLS: <fs_compay_code> TYPE (structure of company code with the above mentioned fields).
LOOP AT lt_company_code ASSIGNING <fs_compay_code>.
         wa_key_value-key = <fs_compay_code>-comp_code.
         wa_key_value = <fs_compay_code>-comp_desc.
         APPEND wa_key_value to lt_key_value_table .
         CLEAR wa_key_value.
ENDLOOP.
node->set_attribute_value_set( name = 'KEY'
                                              value_set = lt_key_value_table ).