How to override lookup in Microsoft Dynamics AX 2012

Here is the code

• Method you need to define:

void DemoLookup(FormControl ctrl)

{

    SysTableLookup sysTableLookup = SysTableLookup::newParameters(tableNum(#TableName),ctrl);

    Query query = New Query();

    QueryBuildDataSource queryBuildDataSource = query.addDataSource(tableNum(#TableName));

    QueryBuildRange queryBuildRange;

    

    sysTableLookup.addLookupfield(fieldNum(#TableName, #FieldName));

    

    queryBuildRange = queryBuildDataSource.addRange(fieldNum(#TableName, #FieldName));

    queryBuildRange.value(queryValue(#Field Range);

    sysTableLookup.parmQuery(query);

    sysTableLookup.performFormLookup();

}

• In the form override the lookup method:

public void lookup()

{

    element.SummaryProjectLookup(this);

}