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Difference – pageBlockTable, dataTable, dataList and Repeat in Visualforce Page <apex:page standardController=”Account” recordSetVar=”Accounts”> <apex:form > <apex:pageBlock title=”pageBlockTable Demo”> <apex:pageBlockTable value=”{!Accounts}” var=”a” border=”1″ cellpadding=”1″> <apex:facet name=”caption”>Account Records</apex:facet> <apex:column headerValue=”Name” value=”{!a.Name}”/> <apex:column value=”{!a.Industry}”> <apex:facet name=”header”>Industry</apex:facet> </apex:column> <apex:column value=”{!a.Phone}”> <apex:facet name=”header”>Phone</apex:facet> </apex:column> <!–<apex:facet name=”footer”>Account Records Ends</apex:facet> –> </apex:pageBlockTable> </apex:pageBlock> <apex:pageBlock title=”DataTable Demo”> <apex:dataTable value=”{!Accounts}” var=”a” border=”1″ cellpadding=”1″> <apex:facet name=”caption”>Account Records</apex:facet> <apex:column headerValue=”Name” value=”{!a.Name}”/> <apex:column value=”{!a.Industry}”> <apex:facet name=”header”>Industry</apex:facet> </apex:column> <apex:column value=”{!a.Phone}”> <apex:facet name=”header”>Phone</apex:facet> </apex:column> <!–<apex:facet name=”footer”>Account Records Ends</apex:facet> –> </apex:dataTable> </apex:pageBlock> <apex:pageBlock title=”Datalist Demo”> <apex:dataList value=”{!Accounts}” var=”a”> <apex:outputField value=”{!a.Industry}”/> </apex:dataList> </apex:pageBlock> <apex:pageBlock title=”repeat Demo”>…

How to pass values between Visualforce page and Apex Apex Class: public class DemoController { public String name {get; set;} public String city {get; set;} public DemoController(){ name = ‘Ranjith’; city = ‘Chennai’; } }   Visualforce: <apex:page controller=”DemoController”> <apex:form > <apex:pageBlock > {!name} <br/> {!city} </apex:pageBlock> </apex:form> </apex:page>  

Refresh part of visualforce using reRender Apex Class public with sharing class ActionDemoController { public String name {get; set;} public void show(){ name = ‘inside the show method’; } } Visualforce <apex:page controller=”ActionDemoController” id=”page”> <!– to refresh part of the page, use the reRender attribute along with action component –> <apex:form id=”fm” title=”main block”> <apex:pageBlock id=”pb1″> <apex:commandButton value=”call show” action=”{!show}” reRender=”pb2″/> </apex:pageBlock> <apex:pageblock title=”result” id=”pb2″> {!name} </apex:pageblock> </apex:form> </apex:page>

Comments in the page starts with <!–  and ends with –> tags HTML can be included as it in a Visualforce Page <apex:page > <!– Begin Default Content REMOVE THIS My another line –> <h1>Congratulations</h1> <br/> This is your new Page <!– End Default Content REMOVE THIS –> <h2> This is Salesforce Training </h2> </apex:page>

Salesforce Interview Question 1. What is the maximum size of the list? 2. What are the map methods in Apex? 3. What is SOQL? 4. What is SOSL? 5. Salesforce Soql And Sosl Governor Limits? 6. Difference between insert and Database.insert? 7. What are the DML statements available in Apex? 8. Governor Limits for DML statements? 9. What are the trigger events? 10. When to use before triggers and when to use after triggers? 11. What are the trigger context variables? 12. What is the difference between trigger.new and trigger.old…

How to call controller method from tab component in visualforce? Apex: public with sharing class tabController2 { public list<account> accList {get; set;} public list<contact> conList {get; set;} public tabController2(){ accList = [select name from account where industry = ‘energy’]; } public void contactRec(){ conList = [select lastName from contact]; } }   Page: <apex:page controller=”tabController2″> <script> // jsFunc is called from tab2 (referred by id in apex:tab) function jsFunc(){ actionfun(); } </script> <apex:form > <apex:tabPanel id=”tabP” switchType=”ajax”> <apex:tab label=”Energy Accounts”> <apex:pageblock > <apex:pageblockTable value=”{!accList}” var=”a”> <apex:column value=”{!a.name}”/> </apex:pageblockTable> </apex:pageblock> </apex:tab>…

Arrays: Array can hold collection of similar elements.  Each element in the array is located by index. Index value starts with zero. So the first element occupies the index zero. Syntax: datatype[] arrayName;  // the square brackets [] is the notation used to declare an array Where the dataType can be primitive (such as Integers or Strings), sObject (Account or Contact or ay custom object etc.,) or userdefined (variable of class type) types. Example: Integer[] ages;     // 30, 40, 50.. String[]  names;   // ‘ranjith’, ‘krishnan’ Account[] accs; Position__c[] pos;  //…