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Select-Options in ABAP

Using Select-Options, the user can specify complex selection criteria. If the selection criteria is complex, you need not write lengthy logical expressions in the select query, which is solved by the select-options statement. Select-Options defines a range table which is having four columns Sign, Option, Low and High.
SELECT-OPTIONS : so_pernr for pernr-pernr.

Select-Options in Web Dynpro ABAP
To show a select options in Web Dynpro ABAP, We have to use SAP’s Standard component WDR_SELECT_OPTIONS. Select options in Web Dynpro work the same way as in ABAP reports.

Procedure to achieve SELECT OPTIONS for a field

• Create Web Dynpro Component with Window and View.(Automatically View is embedded into Window).
• Define Component Use for the WDR_SELECT_OPTIONS under Used Components tab of Web Dynpro Component. 
• Define Controller usage for WDR_SELECT_OPTIONS in the Properties tab of view. 
• Create ViewContainerUIElement in the view Layout. 
• Do the following in WDDOINIT hook method.
• Instantiate Used Component  WDR_SELECT_OPTIONS.
• Instantiate Used Component Controller IWCI_WDR_SELECT_OPTIONS and and Call method INIT_SELECTION_SCREEN.
• Create Range Table using IF_WD_SELECT_OPTIONS->CREATE_RANGE_TABLE.
• Add Selection field by passing Range table and Field to IF_WD_SELECT_OPTIONS-> ADD_SELECTION_FIELD .
• Go to Window of the component->View->ViewContainerUIElement 
• Embed the view WND_SELECTION_SCREEN of Used Component WDR_SELECT_OPTIONS into ViewContainerUIElement of Web Dynpro Component.
• Activate Web Dynpro Component
• Create Web Dynpro Application and Run. 
• Please Click here and Check the example program.