Visualforce Page:
<apex:page controller="selectlistcls">
<apex:form >
<apex:actionFunction name="change" action="{!showselected}"/>
<apex:selectList value="{!selected}" size="1" onchange="change()">
<apex:selectOptions value="{!items}"/>
</apex:selectList>
<apex:selectList value="{!selectedcon}" size="1" disabled="{!display}">
<apex:selectOptions value="{!contactitems}"/>
</apex:selectList>
</apex:form>
</apex:page>
Apex Class:
public with sharing class selectlistcls {
public boolean display { get; set; }
public selectlistcls (){
display= true;
}
public List<SelectOption> getContactitems() {
return contoptions;
}
List<SelectOption> contoptions= new List<SelectOption>();
public String selectedcon { get; set; }
public PageReference showselected() {
System.debug('------------>'+selected);
contoptions.clear();
display=false;
List<Contact> lstcon=[Select id,name from Contact where accountid=:selected];
for(Contact c:lstcon){
contoptions.add(new selectOption(c.id,c.name));
}
return null;
}
public List<SelectOption> getitems(){
List<Selectoption> options= new List<SelectOption>();
options.add(new selectOption('','--Please select one Account--'));
List<Account> lst=[select id, name from Account];
for(Account a:lst){
options.add(new selectOption(a.id,a.name));
}
return options;
}
public String selected { get; set; }
}
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