Visualforce Action Region Example.

Hi,

In this post i am giving an example of <apex:actionRegion> usage in visualforce. it will use to achieve AJAX functionality to partial page refresh.

Controller Class:

public class ActionRegionCLS{

public String reqAccNumber{get;set;}

public Account accObj{get;set;}


public ActionRegionCLS(){

accObj = new Account();

}

public void fillRecord(){

if(reqAccNumber !=null && reqAccNumber !=''){

List<Account> accLst = new List<Account>();

accLst = [select id,Name,AccountNumber,Type,AnnualRevenue from Account where AccountNumber =:reqAccNumber];

if(accLst !=null && accLst.size()>0){

accObj = accLst[0];

}

else{

ApexPages.Message myMsg = new ApexPages.Message(ApexPages.Severity.Info,' No Records found with this Account Number:'+reqAccNumber);

ApexPages.addMessage(myMsg);

accObj = null;


}

}

}


}


Visualforce Page :

<apex:page controller="ActionRegionCLS" >

<apex:pagemessages id="msgs"></apex:pagemessages>

<apex:form >

<apex:pageblock id="pb">

<table>

<apex:actionRegion >

<tr>

<td> <apex:outputLabel value="Enter Account Number"> </apex:outputLabel> </td>

<td>


<apex:inputtext value="{!reqAccNumber}"/>

<apex:commandButton value="Retrive" action="{!fillRecord}" rerender="pb,msgs"/>

</td>

</tr>

</apex:actionRegion>

<tr>

<td> <apex:outputLabel value="Account Name"> </apex:outputLabel> </td>

<td>

<apex:inputField value="{!accObj.Name}"/>

</td>

</tr>

<tr>

<td> <apex:outputLabel value="Account Type"> </apex:outputLabel> </td>

<td> <apex:inputField value="{!accObj.Type}"/> </td>

</tr>

</table>

</apex:pageblock>

</apex:form>

</apex:page>


once you enter account number value in Account Number text box and click on Retrive button it going to get the details of "Account Name", "Account Type" with out reloading entire page.using action region we are updating particular HTML area section with Rerender Tag.


<apex:commandButton value="Retrive" action="{!fillRecord}" rerender="pb,msgs"/>