i am new to salesforce. I am facing a problem like i have pageblock table in my visualforce page and i provide checkbox to each and every record so user can delete one or multiple records at a time.Now my requirement is to provide a master checkbox before all record rows means if user selects that all records will be selected to delete.Please provide me a suggestion to implement in my code.I had already working in it,If i post any wrong question please don't flag like bad please help me
My visualforce page code
<apex:page standardController="Experiment__c" extensions="SampleCheckbox" >
<apex:form >
<apex:pageBlock title="Experiment Details">
<apex:pageBlockButtons >
<apex:commandButton value="Find" action="{!find}" reRender="searchlist"/>
</apex:pageBlockButtons>
<apex:pageblockSection >
<apex:inputfield value="{!Experiment__c.Name}"/>
</apex:pageblockSection>
</apex:pageBlock>
<apex:pageBlock id="searchlist" title="Experiment details">
<apex:pageBlockTable value="{!memlist}" var="mem">
<apex:column >
<apex:inputCheckbox value="{!mem.checked}"/>
</apex:column>
<apex:column value="{!mem.expwc.Name}" title="Member Name" />
<apex:column value="{!mem.expwc.email__c}" title="E-Mail Id"/>
<apex:column value="{!mem.expwc.mobile__c}" title="mobile"/>
</apex:pageBlockTable>
<apex:pageblockButtons >
<apex:commandButton value="Delete" action="{!del}" reRender="searchlist"/>
</apex:pageblockButtons>
</apex:pageBlock>
</apex:form>
</apex:page>
My controller
public class SampleCheckbox {
public List<Experiment__c> explist{set;get;}
public List<mem> memlist{get;set;}
public Experiment__c exp;
public List<Experiment__c> memdellist;
public Boolean checked{set;get;}
//public Boolean show{set;get;}
public SampleCheckbox(Apexpages.StandardController controller) {
exp=(Experiment__c)controller.getRecord();
}
public class mem {
public Experiment__c expwc{get;set;}
public Boolean checked {get;set;}
public mem(Experiment__c e,Boolean b) {
expwc=e;
checked=b;
}
}
public void find() {
//show=true;
String nam=exp.Name;
memlist=new List<mem>();
if(memlist == null) {
memlist=new List<mem>();
}
String sql='SELECT Name,light_weight__email__c,light_weight__mobile__c FROM
Experiment__c WHERE Name LIKE \'%'+nam+'%\'';
explist=Database.query(sql);
for(Experiment__c e:explist) {
mem mo=new mem(e,false);
memlist.add(mo);
}
}
public void del() {
memdellist=new List<Experiment__c>();
for(mem m:memlist)
{
if(m.checked==true)
{
if(memdellist==null)
{
memdellist=new List<Experiment__c>();
}
memdellist.add(m.expwc);
}
}
delete memdellist;
find();
}
}
