How to Create Multi Select Lookup in Microsoft Dynamics AX using X++

 Hi guys, Today we see how to create multi select lookup on form level in Dynamics Ax using X++.

It will work for both 2012 and D365FO.

Unbound field :

Here we are adding Dynamic query to lookup.

Set Auto Declaration property "Yes" to control field(VendAccountNum).

Write below code on Class declaration on form level:

public class FormRun extends ObjectRun

{

    SysLookupMultiSelectCtrl msCtrl;

} 

Way 1  : adding fields from one table only :

Write Below code in Form init method:

public void init()

{

    Query query = new Query();

    QueryBuildDataSource qbds;

    super();

    qbds= query.adddatasource(tablenum(VendTable));

    qbds.fields().addField(fieldNum(VendTable,AccountNum));

    qbds.fields().addField(fieldNum(VendTable,VendGroup));

    msCtrl = SysLookupMultiSelectCtrl::constructWithQuery(element, VendAccountNum , query);//dynamic Query

   msCtrl = SysLookupMultiSelectCtrl::construct(element, VendAccountNum , querystr(query));//static query

}

You can check your from it show the multiselection in lookup.

For testing purpose try below code

void clicked()

{

    container         con;

    int               i;

    con=msCtrl.getSelectedFieldValues();

    //con=msCtrl.get();//RecId values we get

    for (i=1; i<=conLen(con); i++)

    {

            Info(strfmt('%1',conPeek(con,i));

    }

}