Populating DropdownByKey by accessing backend

[Former Member]

Hi All,

As i am new to this Webdynpro and SAP,I want to know how should I populate the value in Dropdown list box by Accesing Bapi Functions.I want to show all of my available networks (BAPI_NETWORK_GETLIST) in Dropdown list.Is there any document for that,Could anyone plz suggest me some pdfs.

Thankx in Advance.

Shakthi

[Former Member · Accepted solution]

Hi Shakthi,

If u want to populate values using a DropDownByKey UI Element this code will help you.

IWDAttributeInfo ainfo = wdContext.node<<NodeName>>().getNodeInfo().getAttribute("<<Value Attribute that is bound to the Drop Down by Key element>>");

ISimpleTypeModifiable st = aiinfo.getModifiableSimpleType();

IModifiableSimpleValueSet vs = st.getSVServices().getModifiableSimpleValueSet();

for(int i=0;i<wdContext.node<<name of the node>>().size();i++)

{

vs.put(Key,Value}

}

Also go through the following link to know more about Drop Down by key element.

http://help.sap.com/saphelp_nw04/helpdata/en/08/13dbfb6e779743bb2ca641ebcb3411/frameset.htm

Check this for a sample application using Drop Down by key UI element.

http://help.sap.com/saphelp_nw04/helpdata/en/c6/a5d4a523bf4b4c9085a114e46c6ed3/frameset.htm

Also check out the following discussion in forum :

https://www.sdn.sap.com/sdn/collaboration.sdn?contenttype=url&content=https%3A//forums.sdn.sap.com/s...

Hope this helps.

Regards,

Vijith

[Former Member]

Hi Shakthi,

If you execute the BAPI with only these three ilnes(i.e without giving any input data),all the avaialble networks will be returned.

If you want to specify some input parameters like max_rows or any table, you can do so by setting it using input.set....().

Execute the BAPI by writing the following three lines :

1) Bapi_Network_Getlist_Input input = new Bapi_Network_Getlist_Input();

************

You can specify the input parameters here eg: max_rows

input.setMax_Rows(10);

*************

2) wdContext.nodeBapi_Network_Getlist_Input().bind(input);

3) wdContext.currentBapi_Network_Getlist_InputElement().modelObject().execute();

Hope this helps,

Regards,

Nibu.

[Former Member]

Hi Vijith Kumar,

Thanks for your timely help.The problem is almost solved I think.If I have any Doubt moreover I'll get in touch.

Thankx again.Thanks for all.

With Luv,

Shakthi

[Former Member]

Hi,

Sorry, I do not have any documents to refer for you. But to implement the said functionality, create a Dropdown by index UI element, map the "texts" property to the BAPI's return node's attribute (Bapi_Network_Getlist_Input.Output.Network_List.Network). When the BAPI is executed, the dropdown will be automatically populated. Hope this helps

1) Create a model out of Bapi_Network_Getlist.

2) Map the Bapi_Network_Getlist_Input node across the model,controller & the view.

3) Create a dropdown by index UI element & map it's "texts" property to Bapi_Network_Getlist_Input.Output.Network_List.Network or Bapi_Network_Getlist_Input.Output.Network_List.Short_Texts whichever you want.

4) Execute the BAPI by writing the following three lines :

Bapi_Network_Getlist_Input input = new Bapi_Network_Getlist_Input();

wdContext.nodeBapi_Network_Getlist_Input().bind(input);

wdContext.currentBapi_Network_Getlist_InputElement().modelObject().execute();

The dropdown will be populated with the result.

Regards,

Nibu

Message was edited by: Nibu Wilson

[Former Member]

Hi Nibu Wilson,

Thankx for your great help.I got solution for this.

Thank you again.

With luv,

Shakthi.

[Former Member]

Hi Nibu Wilson,

If I added that 3 lines of code.But in 3rd line

wdContext.currentBapi_Network_Getlist_InputElement(?).modelObject().execute();

What parameter I have to pass in ?

Plz let me know.

Thank you.

With Luv,

Shakthi

[shyam_ravindranathan]

Hi

get a drop down by index UI and map the node of the BAPI (which has the data to be populated)to the "texts" property of the drop down UI. that should do. hope it helps.

regards,

shyam.