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You can use a tr:setActionListener with pageFlowScope. This puts the
parameter in a map that is accessible off of the request. 


<h:commandButton value="Show more" action="showEmployee">
  <tr:setActionListener from="#{employee}"
       			to="#{pageFlowScope.employeeDetail}"/>
</h:commandButton> 

The following link describes the proces in detail. 

http://myfaces.apache.org/trinidad/devguide/communicatingBetweenPages.html


Bob








-----Original Message-----
From: jvnk [mailto:nagendra.jalapati@philips.com] 
Sent: Thursday, August 14, 2008 6:13 PM
To: users@myfaces.apache.org
Subject: Send parameter via <h:commandButton


How can I send parameter using <h:commandButton.

Loop thru all the employees and display in the table. When I click on the
employee name, I want the respective emp id to be passed to the managed
bean.

I read that we can't use <f:param in <h:commandButton. How can I achieve
this functionality.

<f:view>

	<h:form id="srchrsltsForm">

		<h:dataTable id="srchrslts" value="#{subSearchBean.empInfo}"
var="empResults">

			<h:column>

				<f:facet name="header"><h:outputText
value="{empResults.empName}"/></f:facet>

				<h:commandButton value="Employee Name"
action="#{subSearchBean.empAction}">

					<f:param value="empid"
name="#{empResults.empID}"/>

				</h:commandButton>

			</h:column>

		</h:dataTable>

	</h:form>

</f:view>


Thanks,
Nag

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