columns | Techartifact

If you want to export only few of the column of your table in ADF then follow this approach

inside exportCollectionListener use propertyListener like

<af:commandButton text="Export To excel" id="cb1">
            <af:setPropertyListener from="true"
                                    to="#{pageFlowScope.hideSomeColumns}"
                                    type="action"/>
            <af:exportCollectionActionListener exportedId="t1" type="excelHTML"
                                               title="Employee"
                                               filename="EmployeeData.xls"/>
            <af:setPropertyListener from="false"
                                    to="#{pageFlowScope.hideSomeColumns}"
                                    type="action"/>
          </af:commandButton>

and inside columns you can write an el in visible property as

]
<af:column sortProperty="#{bindings.Employees1.hints.LastName.name}"
                       sortable="false"
                       headerText="#{bindings.Employees1.hints.LastName.label}"
                       id="c7"
                       visible="#{pageFlowScope.hideSomeColumns ne true}">

Then only few columns will be exported.See the video