Populating drop down list with ArrayList

[Former Member]

Hello experts,

I'm developing a webdynpro application that needs to dynamically populate a drop down by key UI Element based on an ArrayList... Can anyone help me, I'm kinda stuck here.. thanks in advance.

JV

[Former Member · Accepted solution]

If you use DDByKey, you have to populate the value set of the DDIC type of the context attribute to which the "selectedKey" property is bound. Search the forum for "ModifiableSimpleType".

Armin

[Former Member · Accepted solution]

Thank you Armin, but I'm kinda new to this stuff, can you explain me in detail how could I work with this.. I have already an instance of the ModifiableSimpleType, but how do I bind it to the context.. thanks in advance.

JV

[Former Member · Accepted solution]

Hi Jesus.

What Armin meant was this:

//Use of ISimpleTypeModifiable to populate dropdowns by key
IWDAttributeInfo attributeInfo = wdContext.getNodeInfo().getAttribute(IPrivateMain.IContextElement.ATTRIBNAME);
ISimpleTypeModifiable attribNameType = attributeInfo.getModifiableSimpleType();
IModifiableSimpleValueSet valueSet = attribNameType.getSVServices().getModifiableSimpleValueSet();
//Clear previous data
valueSet.clear();
//on this part just extract those values from arraylist and craft your  Key-Text pairs
//mm dunno, you can iterate 
for (int i = 0; i <= 400; i++)   
{
  valueSet.put("Key_"+i,"Text "+i);
}


//Anoter method to achieve the same, more direct xD
IModifiableSimpleValueSet ValueSet = wdContext.getNodeInfo().getChild("<your table nodename>").
                     getAttribute("drop_attrib_name").getModifiableSimpleType().getSVServices().
getModifiableSimpleValueSet();

//Same here, you could iterate extracting those Key-Text pairs and put into ValueSet
ValueSet.put("Key","Text");         
 //etc

Regards

Julio Herrera

[Former Member · Accepted solution]

Hey man, thanx a lot, that worked out!

Cheers!

[Former Member · Accepted solution]

Hi,

can anyone tell me how can we do this for dropdownbyIndex?