Wednesday, October 10, 2018

Wrapper class in salesforce

Today we will try to cover the topic Wrapper class in Salesforce.

Wrapper class in salesforce

In simple term wrapper class is a class whose instances are a collection of objects.

Why wrapper class is required?

In visualforce, we can operate on one object at a time and can display data related
to that particular object using page block table. What if we want data from a number of
objects? In this case, we can make use of the wrapper class.

Another most important use is when you want to display data with check-boxes and then
display selected data based on a checkbox.

Let say if I have two custom objects and these objects do not have any relationship in between them and I want to display data from both these objects in the table.


Fields on object 1:


Fields on object 2:

Below is the controller for the above requirement.


public class WrapperClassTwoObject{

list<Testobject1__c> objList1=new list<Testobject1__c>();
list<Testobject2__c> objList2=new list<Testobject2__c>();

public list<wrapperClass> wrapperClassList=new list<wrapperclass>();
public list<wrapperClass> getListWrapperObjectMethod()
objList1=[Select name,testfield1__c from Testobject1__c limit 1];
objList2=[Select name,testfield1__c from Testobject2__c limit 1];
for(integer i=0;i<objList1.size();i++)
wrapperClassList.add(new wrapperCLass(objList1[i].name,objList1[i].testfield1__c,objList2[i].name,objList2[i].testfield1__c ));

return wrapperClassList;


public class wrapperClass

public string name{get;set;}
public string fieldDataOne{get;set;}
public string name1{get;set;}
public string fieldDataTwo{get;set;}

public wrapperCLass(string name,string fieldDataOne,string name1,string fieldDataTwo)




Below is the visualforce page for the above requirement.


<apex:page controller="WrapperClassTwoObject">
  <apex:form >
  <apex:pageBlock >
  <apex:pageBlockSection >

  <apex:pageBlockTable value="{!ListWrapperObjectMethod}" var="a">
  <apex:column value="{!}"/>
  <apex:column value="{!a.fieldDataOne}"/>
  <apex:column value="{!a.name1}"/>
  <apex:column value="{!a.fieldDataTwo}"/>

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