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satheesh8.k1.3890099515516848E12satheesh8.k1.3890099515516848E12 

please help me for checkbox

HI.

please any one help me ,

I create one vf page for displaying all the case related data along with check box for every record. using wrapper class , i display 10 records for every page like pagenation type,  first page i cheched 4 records displayed in other pageblocksection ,and click it second page or next button again checked 2 records and display it in same pageblocksection, but here my problem is i clicked previos button i saw the earlyier selected record which is unchecked. but i want check it

 
Gaurav KheterpalGaurav Kheterpal
Can you please share your code?

If my answer helps resolve your query, please select it as a 'Best Answer' so that it benefits others and helps us improve the overall quality of the forums.
satheesh8.k1.3890099515516848E12satheesh8.k1.3890099515516848E12
Hi. Gaurav Kheterpal,

VF:

<apex:page controller="PagingControllerforCase">
  <apex:form id="frm">
    <apex:pageBlock title="Paging through Categories of Stuff">
 
      <apex:pageBlockButtons location="top">
        <apex:commandButton action="{!ProcessSelected}" value="Show Selected accounts" reRender="block2"/>
        <apex:commandButton action="{!cancel}" value="Cancel"/>
      </apex:pageBlockButtons>
      <apex:pageMessages />
 
      <apex:pageBlockSection title="Category Results -  Page #{!pageNumber}" columns="1">
        <apex:pageBlockTable value="{!categories}" var="c">
          <apex:column width="25px">
            <apex:inputCheckbox value="{!c.checked}"/>
          </apex:column>
          <apex:column value="{!c.cat.id}" headerValue="ID"/>
        </apex:pageBlockTable>
      </apex:pageBlockSection>
    </apex:pageBlock>
 
    <apex:panelGrid columns="4">
    <apex:commandLink action="{!first}"  reRender="frm">First</apex:commandlink>
    <apex:commandLink action="{!previous}" rendered="{!hasPrevious}" reRender="frm">Previous</apex:commandlink>
    <apex:commandLink action="{!next}" rendered="{!hasNext}" reRender="frm">Next</apex:commandlink>
    <apex:commandLink action="{!last}" reRender="frm">Last</apex:commandlink>
    </apex:panelGrid>
    <apex:pageBlock >
        
        <apex:pageBlockTable value="{!selectedAccounts}" var="sa"  id="block2">         
            <apex:column value="{!sa.Id}" />          
    </apex:pageBlockTable>
    </apex:pageBlock>
    
  </apex:form>
</apex:page>

apex:

public class PagingControllerforCase  {
 public list<categoryWrapper> wrapaccountList { get; set; }
 List<categoryWrapper> categories {get;set;}
 public list<Case> selectedAccounts{get;set;}
 public Set<Case> setSelectedAcc {set;get;}
 // instantiate the StandardSetController from a query locator
 
 public PagingControllerforCase()
 {
         setSelectedAcc=new Set<Case>();
          wrapaccountList =new list<categoryWrapper>();
          for(Case a:[select id from case limit 10]){
           wrapaccountlist.add(new categoryWrapper(a));
        
           }
 }
 
 public ApexPages.StandardSetController con {
  get {
   if(con == null) {
    con = new ApexPages.StandardSetController(Database.getQueryLocator([Select Id FROM Case limit 100]));
    // sets the number of records in each page set
    con.setPageSize(5);
   }
   return con;
  }
  set;
 }
 
 // returns a list of wrapper objects for the sObjects in the current page set
 public List<categoryWrapper> getCategories() {
  categories = new List<categoryWrapper>();
  for (Case category : (List<Case>)con.getRecords())
   categories.add(new CategoryWrapper(category));
 
  return categories;
 }
  
 // indicates whether there are more records after the current page set.
 public Boolean hasNext {
  get {
   return con.getHasNext();
  }
  set;
 }
 
 // indicates whether there are more records before the current page set.
 public Boolean hasPrevious {
  get {
   
   return con.getHasPrevious();
  }
  set;
 }
 
 // returns the page number of the current page set
 public Integer pageNumber {
  get {
   return con.getPageNumber();
  }
  set;
 }
 
 // returns the first page of records
  public void first() {
   con.first();
  }
 
  // returns the last page of records
  public void last() {
   con.last();
  }
 
  // returns the previous page of records
  public void previous() {
   con.previous();
  }
 
  // returns the next page of records
  public void next() {
   con.next();
  }
 
  // returns the PageReference of the original page, if known, or the home page.
  public void cancel() {
   con.cancel();
  }
  
  
      public void ProcessSelected(){
     selectedAccounts=new list<Case>();
     
      for(CategoryWrapper wrapobj:categories )
      {
           if(wrapobj.checked==true)          
               setSelectedAcc.add(wrapobj.cat);           
      }
      selectedAccounts.addall(setSelectedAcc);
         System.debug('@@@@@@'+selectedAccounts);
         update selectedAccounts;
       wrapaccountList=null;          
      }  
  public class CategoryWrapper {
 
    public Boolean checked{ get; set; }
    public Case cat { get; set;}
 
    public CategoryWrapper(){
        cat = new Case();
        checked = false;
    }
 
    public CategoryWrapper(Case c){
        cat = c;
        checked = false;
    }
 
}
}

please help me very ugent.

thanks
Satheesh
Zuinglio Lopes Ribeiro JúniorZuinglio Lopes Ribeiro Júnior
Hello,

Try instantiating your selectedAccounts and categories in the contructor instead of doing it every time you call ProcessSelected method and getCategories:
 
You can also create another Case list to prevent updating records repeatedly:

Apex: 
  
public class PagingControllerforCase  {
	public List<CategoryWrapper> wrapaccountList { get; set; }
	List<CategoryWrapper> categories {get;set;}
	public List<Case> selectedAccountsToUpdate{get;set;}
	public List<Case> selectedAccounts{get;set;}
	public Set<Case> setSelectedAcc {set;get;}
	// instantiate the StandardSetController from a query locator
 
	public PagingControllerforCase()
	{
		setSelectedAcc=new Set<Case>();
		// Instatiate here
		selectedAccounts=new List<Case>();
		categories = new List<CategoryWrapper>();
		
		wrapaccountList =new List<categoryWrapper>();
		for(Case a:[SELECT Id FROM Case LIMIT 10]){
			wrapaccountlist.add(new categoryWrapper(a));
		}
	}
 
	public ApexPages.StandardSetController con {
		get {
			if(con == null) {
				con = new ApexPages.StandardSetController(Database.getQueryLocator([SELECT Id FROM Case LIMIT 100]));
				// sets the number of records in each page set
				con.setPageSize(5);
			}
			return con;
		}
		set;
	}
 
	// returns a list of wrapper objects for the sObjects in the current page set
	public List<categoryWrapper> getCategories() {
		
		for (Case category : (List<Case>)con.getRecords())
			categories.add(new CategoryWrapper(category));

		return categories;
	}
  
	// indicates whether there are more records after the current page set.
	public Boolean hasNext {
		get {
			return con.getHasNext();
			}
		set;
	}
	 
	// indicates whether there are more records before the current page set.
	public Boolean hasPrevious {
		get {
			return con.getHasPrevious();
		}
		set;
	}
 
	// returns the page number of the current page set
	public Integer pageNumber {
		get {
			return con.getPageNumber();
		}
		set;
	}
 
	// returns the first page of records
	public void first() {
		con.first();
	}

	// returns the last page of records
	public void last() {
		con.last();
	}

	// returns the previous page of records
	public void previous() {
		con.previous();
	}

	// returns the next page of records
	public void next() {
		con.next();
	}

	// returns the PageReference of the original page, if known, or the home page.
	public void cancel() {
		con.cancel();
	}
  
  
	public void ProcessSelected(){
		selectedAccountsToUpdate = new List<Case>();
		
		for(CategoryWrapper wrapobj:categories )
		{
			if(wrapobj.checked==true)          
				setSelectedAcc.add(wrapobj.cat);           
		}
		selectedAccountsToUpdate.addall(setSelectedAcc);
		selectedAccounts.addall(selectedAccountsToUpdate);
		System.debug('@@@@@@'+selectedAccounts);
		
		update selectedAccountsToUpdate;
		
		wrapaccountList=null;          
	}
	
	public class CategoryWrapper {

		public Boolean checked{ get; set; }
		public Case cat { get; set;}

		public CategoryWrapper(){
			cat = new Case();
			checked = false;
		}

		public CategoryWrapper(Case c){
			cat = c;
			checked = false;
		}

	}
}


Regards.

Don't forget to mark your thread as 'SOLVED' with the answer that best helps you.
satheesh8.k1.3890099515516848E12satheesh8.k1.3890099515516848E12
HI 
Zuinglio Lopes Ribeiro Júnior,

i will explain correct problem ,
we are in first page i selected two record after that I clicked 'show Selected accounts '  that time selected records are appear in below pageblock.which is good.

User-added image
again i Clicked next link it will shows second page records I selected two records after that I clicked 'show Selected accounts '  that time selected records are appear in below pageblock.which is good.
 User-added image
now i Clicked Previous link it will shows first page which is also good.
User-added image
but my problem is earlyier I checked two records but now it will shows unchecked ,(whenever i clicked previous link) now also so which is required to check the selected records

Thanks
Satheesh

 
satheesh8.k1.3890099515516848E12satheesh8.k1.3890099515516848E12
Hi..

Please Any one help me for above mentioned problem .It's Very Urgent.

Thanks
Satheesh
Zuinglio Lopes Ribeiro JúniorZuinglio Lopes Ribeiro Júnior
Hello,

I will reproduce your code here so I can have a better idea of what is going on but it may take a while. As soon as I finish my tests I will give you a feedback.

Regards.
satheesh8.k1.3890099515516848E12satheesh8.k1.3890099515516848E12
HI    Zuinglio Lopes Ribeiro Júnior,

Thank you for giving your valueble time for me. I got Solution, let you Know if anything is required from your side .Thank you very very much.

Note: This code is solved my problem.

Vf Code:

<apex:page controller="Pagin_alpha">
<style type="text/css">
      .loadingIcon {
            background-image: url(/img/loading.gif);
            width: 16px;
            height: 16px;
        }
     </style>
<script type="text/javascript">
function checkAll(cb,cbid)
        {
            var inputElem = document.getElementsByTagName("input");                      
            for(var i=0; i<inputElem.length; i++)
            {   
                
                 if(inputElem[i].id.indexOf(cbid)!=-1){                                         
                inputElem[i].checked = cb.checked;
                }
            }
        }
</script>
<apex:form id="form">
<br/>
<div style="align:right;">
<apex:repeat value="{!alphabet}" var="a">
<apex:commandLink value="{!a}" action="{!refreshList2}" rerender="form" style="{!if($CurrentPage.parameters.alpha=a,'font-weight:bold','')}" status="stat">
<apex:param name="alpha" value="{!a}"/>
</apex:commandLink>
&nbsp;|&nbsp;
</apex:repeat>
</div>
<br/>
<apex:pageBlock id="block">
<apex:pageBlockButtons >
<apex:commandButton value="First" action="{!standardsetcon.First}" rerender="block,block2" status="stat"/>
<apex:commandButton rendered="{!standardsetcon.hasprevious}" value="Previous" action="{!standardsetcon.previous}" rerender="block,block2" status="stat"/>
<apex:commandButton rendered="{!standardsetcon.hasnext}" value="Next" action="{!standardsetcon.next}" rerender="block,block2" status="stat"/>
<apex:commandButton value="Last" action="{!standardsetcon.Last}" rerender="block,block2" status="stat"/>
</apex:pageBlockButtons>
<apex:actionStatus id="stat">
<apex:facet name="start"> 
<apex:outputPanel layout="block" styleClass="message infoM4">
<apex:panelGrid columns="2" styleClass="messageTable" columnClasses="messageCell" style="padding:0px;margin:0px;">
<apex:panelGroup >
<img class="loadingIcon" src="/s.gif"/>
</apex:panelGroup>
<apex:panelGroup >
<div class="messageText">Please wait...</div>
</apex:panelGroup>
</apex:panelGrid>
</apex:outputPanel>
</apex:facet>
<apex:facet name="stop">
<apex:pageBlockTable value="{!CurrentList}" var="c" id="table">
<apex:column >
<apex:facet name="header"><apex:inputcheckbox onclick="checkAll(this,'check')" value="{!fals}" /></apex:facet>
<apex:inputcheckbox value="{!c.checked}" id="check">
</apex:inputcheckbox>
</apex:column>
<apex:column value="{!c.ocontact.id}" headerValue="Id"/>
</apex:pageBlockTable>
</apex:facet>
</apex:actionStatus>
</apex:pageBlock>
<apex:pageBlock title="Selected Contacts" id="block2">
<apex:commandButton value="Display Selected" rerender="block2"/>
<apex:pageBlockTable value="{!DisplaySelectedList}" var="c">
<apex:column value="{!c.id}" headerValue="Id"/>

</apex:pageBlockTable>
</apex:pageBlock>

</apex:form>  
</apex:page>

Apex Code:

public with sharing class Pagin_alpha {

     
    private List<ContactSet> ContactSetList{get;set;}
    private string ContactListQuery;
    private set<Case> selectedContact;
    
    public List<string> alphabet{get;set;}
    public boolean fals{get;set;}   
    
    public Pagin_alpha(){
      fals=false;
      alphabet=new string[]{'All','a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' };  
      ContactSetList = new List<ContactSet>();
      selectedContact = new set<Case>();
      ContactListQuery= 'select id from Case limit 1000';    
    }
    
     Private void updateSelectedContact(){
        for(ContactSet cs:ContactSetList ){
           if(cs.checked)
               selectedContact.add(cs.oContact);
           else{
               if(selectedContact.contains(cs.oContact))
                   selectedContact.remove(cs.oContact);
               }
       }   
    } 
    
      public ApexPages.StandardSetController standardSetCon {
        get {
            if(standardSetCon == null) {
                standardSetCon = new ApexPages.StandardSetController(Database.getQueryLocator(ContactListQuery));
                // sets the number of records in each page set
                standardSetCon .setPageSize(5);
            }
            return standardSetCon ;
        }
        set;
    }
 
    public List<ContactSet> getCurrentList() {
       updateSelectedContact(); 
       ContactSetList = new List<ContactSet>();       
        for (Case category : (List<Case>)standardSetCon.getRecords()){        
            if(selectedContact.contains(category))          
            ContactSetList.add(new ContactSet(category,'true'));
            else
            ContactSetList.add(new ContactSet(category));
        }
        fals=false;
        return ContactSetList;
    } 
    
    public PageReference refreshList2() {       
       standardSetCon = null;     
       string s;
       if(apexpages.currentpage().getparameters().get('alpha') == 'All')
           s='%';
       else
           s= apexpages.currentpage().getparameters().get('alpha')+'%';
       
       ContactListQuery= 'select id from Case';           
        return null;
    }
    
   
    
    public List<Case> getDisplaySelectedList(){
        updateSelectedContact();
        List<Case> displaycon = new list<Case>();
        displaycon.addall(selectedContact);
        return displaycon;
    }
       
    public class ContactSet { 
        public Boolean checked{ get; set; }
        public Case oContact { get; set;} 

        public ContactSet(){
            oContact = new Case();
            checked = false;
        } 
        public ContactSet(Case c){
            oContact = c;
            checked = false;

        } 
        public ContactSet(Case c,string s){
            oContact = c;
            checked = true;

        } 
    }
    
  
}

Thank
Satheesh