Wrapper Class

Wrapper Class – A wrapper or container class is a class, a data structure, or an abstract data type whose instances are collections of other objects. public with sharing class MultiDataDisplayCls {     public List<Employee__c> lstE{get;set;}     public List<Account> lstA{get;set;}     public List<wrapInner> lstWI{get;set;}         public MultiDataDisplayCls(){         lstE = new List<Employee__c>();         lstA = new List<Account>();         lstE = [select id,name,Employee_Name__c,employee_city__c from Employee__c limit 3];    lstA = [select id,name,phone from Account limit 3];                         lstWI = new List<wrapInner>();                 for(Integer i=0;i<lstE.size();i++){             wrapInner objWI = new wrapInner();             objWI.objE = lstE[i]; objWI.objA = lstA[i];             lstWI.add(objWI);         }             }     public class wrapInner{ // step1         public Employee__c objE{get;set;} // setp2         public Account objA{get;set;}     } } <apex:page showHeader="false" controller="MultiDataDisplayCls">   <apex:form >       <apex:pageBlock >           <apex:pageBlockTable value="{!lstWI}" var="w">               <apex:column headerValue="Employee ID" value="{!w.objE.Name}"/>               <apex:column headerValue="Account Name" value="{!w.objA.Name}"/>               <apex:column headerValue="Employee Name" value="{!w.objE.Employee_Name__c}"/>               <apex:column headerValue="Account Phone" value="{!w.objA.Phone}"/>           </apex:pageBlockTable>       </apex:pageBlock>   </apex:form> </apex:page>

wrap records with a check box

1. <apex:page controller="EmpDeleteCls">
2.      <apex:form >
3.         <!-- <c:companyLogo /> -->
4.          <apex:pagemessages ></apex:pagemessages>
5.          <apex:pageBlock >
6.              <apex:pageBlockTable value="{!lstWI}" var="w">
7.                  <apex:column headerValue="Action">
8.                      <apex:inputcheckbox value="{!w.ischecked}"/>
9.                  </apex:column>
10.                  <apex:column headerValue="Employee ID" value="{!w.objE.Name}"/>
11.                  <apex:column headerValue="Employee Name" value="{!w.objE.Employee_Name__c}"/>
12.              </apex:pageBlockTable>
13.              <apex:commandButton value="Delete" action="{!doDelete}"/>
14.          </apex:pageBlock>
15.        <!--  <c:companyLogo /> -->
16.      </apex:form>
17. </apex:page>

1. public with sharing class EmpDeleteCls {
2. 
   
3.     public List<Employee__c> lstEToDelete = new List<Employee__c>();
4.     public Integer selCount =0;
5.     public PageReference doDelete() {
6.         try{
7.             for(wrapEmployee objWE : lstWI){
8.                 if(objWE.ischecked == true){
9.                     selCount++;
10.                     lstEToDelete.add(objWE.objE);
11.                 }
12.             }
13.             if(selCount == 0){
14.                 // http://www.salesforce.com/us/developer/docs/apexcode/Content/apex_pages_message.htm
15.                 ApexPages.Message myMsg = new ApexPages.Message(ApexPages.Severity.INFO, 'No Records Selected to Delete....');
16.                 apexpages.addMessage(myMsg);
17.                 return null;
18.             }
19.             
20.             
21.             if(lstEToDelete.size()>0)
22.                 delete lstEToDelete;
23.             return (new pagereference('/apex/wrapper2').setredirect(true));
24.       }
25.       catch(exception e){
26.           return null;
27.       }
28.         
29.     }
30. 
    
31. 
    
32.     public List<Employee__c> lstE{get;set;}
33.     public List<wrapEmployee> lstWI{get;set;}
34.     public EmpDeleteCls(){
35.         lstE = new List<Employee__c>();
36.         lstE = [select id,name,Employee_Name__c from Employee__c];
37.         
38.         lstWI = new List<wrapEmployee>();
39.         for(Integer i=0;i<lstE.size();i++){
40.             wrapEmployee objWE = new wrapEmployee();
41.             objWE.ischecked = false;
42.             objWE.objE = lstE[i];
43.             lstWI.add(objWE);
44.         }
45.     }
46.     
47.     
48.     
49.     public class wrapEmployee{
50.         public Employee__c objE{get;set;}
51.         public boolean ischecked{get;set;}
52.     }
53.     
54. }