Hi .. Developers  How to pass values form One selectlist to other selectlist in salesforce and render values it with onchange event.. 

 

public class test15{
    public  string selectedOption{get;set;} 
    public  string selectedOption2{get;set;}
    public Wrapper Wrapper1{get;set;}
    public list<wrapper> lstWrapper1{get;set;}
    public list<wrapper>addedlist{get;set;} 
      public  string statename{get;set;} 
       public  string capitalname{get;set;} 
        public  string rating{get;set;}   
    public  test15(){
    addedlist = new list<wrapper>();
        lstWrapper1 = new list<wrapper>();   
        string  jsonexample1 =  ' { "overalldata": [ {"stateName": "Andrapradesh",  "rating": "5.0" , "active": "yes" ,"Capital":"Amaravathi"}, { "stateName": "Telangana",  "rating": "4.0" ,"active": "no","Capital":"Hyderabad" }, {"stateName": "Karnataka",  "rating": "5.0" ,"active": "no","Capital":"Banglore"} , {"stateName": "Maharastra",  "rating": "4.5" ,"active": "no","Capital":"Mumbai"}] } ';
  Map<String, Object> mapobj1 = (Map<String, Object>)JSON.deserializeUntyped(jsonexample1);
        system.debug('the Mapped and deserialized values are:'+ mapobj1); 
        Object objj1 = (object)mapobj1.get('overalldata');
        system.debug('the data value is :::'+objj1);
        string  SerilizeEmpdata1 = system.json.serialize(objj1);
        system.debug(SerilizeEmpdata1);
        lstWrapper1 =(list<wrapper>)system.json.deserialize(SerilizeEmpdata1,list<wrapper>.class);
        system.debug(lstWrapper1); 
    }  
    public List<SelectOption> getItems() {
        List<SelectOption> options = new List<SelectOption>();
        options.add(new SelectOption('none','--select One--'));
        For(Wrapper lw :lstWrapper1)
            options.add(new SelectOption(lw.stateName,lw.stateName));
        return options;
   }
   
   public string MYVAR{get;set;}
   public void Taxtableonclick(){
   system.debug('the selected value is:::'+MYVAR);
   }
  public Wrapper wpr{get;set;}
    
  public void add(){
  addedlist.add(wpr);
   } 
   
   
   
   
  public class Wrapper{
        public string  stateName{get;set;}
        public string  rating{get;set;}
        public string  active{get;set;}
        public string  Capital{get;set;}
  }
  
}

Visualforc page:

<apex:page controller="test15"> 
<apex:form >  
   <apex:actionFunction name="Taxtableonclick" action="{!Taxtableonclick}" rerender="myPanel">
              <apex:param value="MYVAR" name="MYVAR" assignto="{!MYVAR}"/>
          </apex:actionfunction>    
<apex:selectList value="{!SelectedOption}"  size="1" multiselect="false" onchange="Taxtableonclick(this.value);">
            <apex:selectOptions value="{!items}"/>
            </apex:selectList>
<apex:commandButton value="Add+" reRender="t"  action="{!add}"/>
      <br/>
 <apex:pageBlock >
 
 
  
 
 <apex:selectList id="t" >
  
   <apex:selectOptions value="{!addedlist}"/>
   
   <apex:actionSupport event="onchange"  reRender="test"/>
  
 </apex:selectList>
 
  <apex:outputPanel id="test">
   you have selected state: {!statename} <br/>
    its capital is: {!capitalname} <br/>
    its rating is:{!rating}
  </apex:outputPanel>
  
   
 <apex:commandButton value="Save" /> 
   
 </apex:pageBlock>
</apex:form>
</apex:page>

thanks 
Deepika
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