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author's profile photo Former Member
Former Member

set value in DropDownByKey during runtime

Hello all,

is there a way, to set the valueSet of a DropDownByKey UIElmement during runtime or change the enumeration of a simple type?

I have a RFC function that returns all possible valueSets of the DropDownByKey Element. I create a ContextNode in the Context of the Controller and in the Context of the View and bind them. I also bind the DropDownByKey UIElement (attribute "selectedKey") to a context attribute ("Sysid") of the View Context. Then I create a new method at the controller, that call's the rfc function and invalidate the context after calling the function successfully. I call this method at the doInit Methode of the view as followed...

<u>Coding doInit method of the view:</u>


Object attr = wdContext.currentZ_Fh0002_Systeme_OutputElement().getAttributeValue("Sysid");

All the mapping works successfully. I tested this with the second coding line above. So I get the correct value in the attribute "Sysid", but there is no value in the DropDownByKey UIElement. How can I set the value of the context attribute "Sysid" to the attribute "selectedKey" of the DropDownByKey UIElement?

Can anyone help my, please?

Best regards


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2 Answers

  • author's profile photo Former Member
    Former Member
    Posted on Feb 07, 2005 at 04:33 PM


    Search your NW help for ISimpleTypeModifiable -- you get references to "Dynamic Metadata", "Code Example of Key Binding" and finally "Inserting an Extended Value Selector" -- I guess this provides you with enough information on modifying value set at run-time.


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    • Former Member


      Define a simpleType. Bind it to a context attribute.Bind that attribute to the dropdown box. Say the name of attributw value is dropDown.

      get an IwdattributeInfo value.

      create a ISimpleTypeModifiable

      Create a IModifiableValueSet

      then use the modifiable valueset object.put() function to create the dropdown dynamically

  • author's profile photo Former Member
    Former Member
    Posted on Feb 15, 2005 at 10:07 AM

    Hi Petra,

    just giving you a few lines of code as example. I am populating a DropDownByKey UI Element dynamically here.. though the data is hardcoded in my case.. it will come from backend in your case.

    IWDAttributeInfo attributeInfo = wdContext.getNodeInfo().getAttribute("");

    ISimpleTypeModifiable countryType = attributeInfo.getModifiableSimpleType();


    IModifiableSimpleValueSet valueSet = countryType.getSVServices().getModifiableSimpleValueSet();


    valueSet.put("GB","Great Britain");

    valueSet.put("US","United States");




    here Country is a Value Attribute in view context having type property maped with a already created simple type.

    You cal also catch the values in the populated set by this code

    for (int idx = 0; idx < valueSet.size(); idx++){

    Object key = v.getKey(idx);

    String text = v.getText(idx);


    hope this helps...



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