Hi All,

I'm trying to utilze the standard set controller setSelectedRecord() function to capture the selected records from the screen while paginating from one page to another. But when i add the records from the 2nd page into the standardsetcontroller variable the records which i have already added to it become lost.

Any idea why its happening so?
 

VF Page:
<apex:page standardController="Account" Extensions="accountCon" >
<apex:form id="form1" >
<apex:pageBlock >
<apex:pagebLockTable value="{!accList}" var="a">
    <apex:column >
        <apex:inputCheckbox value="{!a.selected}" onclick="updateSel()"/>
    </apex:column>
    <apex:column value="{!a.Acc['Name']}"/>
    
    
</apex:pagebLockTable>  

<apex:commandButton action="{!next}" value="Next"/>


<apex:pageBlockTable value="{!selAcc}" var="acc" id="pgblock2">

    <apex:column value="{!acc['Name']}"/>
</apex:pageBlockTable>

<apex:actionFunction name="updateSel" action="{!updateSel}" reRender="pgblock2"/>

</apex:pageBlock>
</apex:form>
</apex:page>


Controller:

public class accountCon {

public list<Sobject> selAcc{get{
    selAcc = selAcc();
    return selAcc;
}set;}
public list<accountWrapper> accList{get
{
    return accLIst;   
}

set;}
    public accountCon(ApexPages.StandardController controller) {
    selAcc = new List<Sobject>();
    getAccounts();
    }

ApexPages.standardSetController sCon;


public List<accountWrapper> getAccounts()
{
    if(sCon==null)
        sCon = new ApexPages.standardSetController(Database.getQueryLocator([select id,name,type from Account]));
    sCon.setPageSize(5);
    
    if(accLIst == null)
        accLIst = new List<accountWrapper>();
        
    for(sobject s:sCon.getRecords())
    {
        accountWrapper wrp = new accountWrapper();
        wrp.selected = false;
        wrp.acc=s;
        accLIst.add(wrp);
    }
    return accList;
}

public void updateSel()
{
    List<Sobject> s = new List<Sobject>();
    for(accountWrapper awrp :accList )
    {
        if(awrp.selected)
         s.add(awrp.acc);
    }
    system.debug('Before set selected:'+scon.getSelected());
    sCon.setSelected(s);
    system.debug('After set selected:'+scon.getSelected());
}


public list<Sobject> selAcc()
{
    return scon.getSelected();
}
public void next()
{
    accList .clear();
    sCon.Next();
    accList  = getAccounts();
}

class accountWrapper
{
    public Boolean selected{get;set;}
    public Sobject Acc{get;set;}
}
}