Hi Team,

Please help me i am facing the issue while redirecting the to another vf page . my requirement is after selecting account lookup click on continue button then redirect the page with account id in another vf page.


VF Page
========

<apex:page controller="OrderAccountLookup" tabStyle="OrderAccountLookup__tab">
    <apex:includeScript value="{!$Resource.Jquery_06_09_17}"/>
    <style>
        .txtfield{width:65px; margin-bottom:5px;}
        
        table.bgmpop{
        border-collapse:collapse;
        border:1px solid #333;
        font-family:calibri; font-size:12px;
        }
        table.bgmpop th {
        border-collapse:collapse;
        background:#6B95A0; color:#fff;
        border-right:1px solid #fff; text-align:center;
        font-family:calibri; font-size:14px;
        padding:3px; border:1px solid #fff;
        }
        table.bgmpop td {
        color:#333; border:1px solid #ccc;
        font-family:calibri; font-size:12px;
        padding:3px; text-align:center;
        }
    </style> 
    <script>
    function setContact(idc,val){
        document.getElementById(idc).value=val.value;
        
    }
    </script>  
    
    
    <apex:form id="frm" >
        <script>
        var accReq = "{!acc.Name}";
        if(accReq != '') {
            window.location="/apex/VisualforceName?id={!acc.Id}";
        }
        </script>
        
        <apex:pageMessages id="showmsg"></apex:pageMessages>
        <apex:inputHidden value="{!targetField}" id="selectedAccId"/>
        <div style="background:#A9B97A; border-radius:5px; padding:10px;" align="left">
            <b><apex:outputText value="Please Select Account" style="color:#fff;font-size:20px; font-family:calibri;"/></b>
        </div>
        
        <div align="left" style="padding:10px 5px 10px 5px; border:1px solid #ccc;">
            <apex:OutputLabel value="Account" style="color:#333;font-size:12px; font-weight:bold; padding-right:15px;" />
            <c:AutoCompleteV2 allowClear="true" importJquery="true" labelField="Name" SObject="Account" valueField="Id" targetField="{!targetField}" style="width:200px"/>
        </div>
        
        <apex:repeat value="{!accountList}" var="acc" >
        </apex:repeat>
        
        <apex:commandButton value="Continue" action="{!ShowContacts}"  reRender="frm"  styleClass="ButtonStyle" 
                            style=" border:1px solid #cacaca; -webkit-border-radius: 4px; -moz-border-radius: 4px;border-radius: 4px;
                                   font-size:12px;font-family:arial, helvetica, sans-serif; margin-top:2px; padding:6px 8px 6px 8px; 
                                   text-decoration:none; font-weight:bold; color: #333;" />
        
        <apex:commandButton value="Cancel" action="{!Cancel}" styleClass="ButtonStyle" style=" border:1px solid #cacaca; -webkit-border-radius: 3px; -moz-border-radius: 3px;border-radius: 3px;
                                                                                              font-size:12px;font-family:arial, helvetica, sans-serif; margin-top:2px; padding:6px 8px 6px 8px; 
                                                                                              text-decoration:none; font-weight:bold; color: #333;"   />
        
        <div style="padding:10px 8px 10px 8px;display:none" >
        </div>
        
    </apex:form>
    
</apex:page>


Apex class
============

public class OrderAccountLookup {
    public Account acc{get;set;}
    public String targetField {get;set;}
    public String busAssoID {get;set;}
    public String retURL {get;set;}
    public String conid {get;set;}
    public String message{get;set;}
    public List<Contact> contactList {get;set;}
    public List<Account> accountList {get;set;}
    public List<SelectOption> options {get;set;}
    public string bl1 {get;set;}
    public boolean contactsection {get;set;}
    public boolean desabl {get;set;}
    public String lkid{get;set;}
    public Account selectedAccount{get;set;}   
    
    public OrderAccountLookup()
    {
        acc=new Account();   
    }
    
    ApexPages.standardController a_sc = null;
    public OrderAccountLookup(ApexPages.standardController sc)
    {
        bl1='display:none';
        desabl = true;
        a_sc = sc;
        busAssoID = ApexPages.currentPage().getParameters().get('id');
        retURL = ApexPages.currentPage().getParameters().get('retURL'); 
        
        if(retURL != null){
            retURL = retURL.substring(1,16);
        }
        targetField = '';
        conid = '';
        message = '';
        contactList = new List<Contact>();
        accountList = new List<Account>();
        options = new List<SelectOption>();
        
        if(busAssoID == null){
            if(lkid!=null){
                
                RecordType recordBA = [select id,Name from RecordType where SobjectType = 'Account'];
                acc.recordTypeID = recordBA.Id;
            }else{
                selectedAccount = [select id,name from account];
                ShowContacts();
                Redirect();
            }
        }
        
        
    }
    public void ShowContacts(){
        message = '';
        List<Account> tempAccList = [select Id,Name,OwnerID,Owner.name from Account where Id =: targetField];        
        if(tempAccList.size() == 0 ){
            bl1='display:none';
            if(targetField==''){
                ApexPages.addmessage(new ApexPages.message(ApexPages.severity.Error,'Please search and select required account.'));
            }
            else{
                ApexPages.addmessage(new ApexPages.message(ApexPages.severity.Error,'This account doesnot exist, Please select proper account.'));
            }
            
        }else {
           
            bl1='';
            accountList = [select Id,Name,OwnerID,Owner.name from Account where Id =: targetField];
            contactList = [select Id,Name from Contact where AccountId =: targetField];
            
            if(accountList.isEmpty()){
                desabl = true;
                message='No Account to display';
            }
            
            if(contactList.isEmpty()){
                desabl = true;
                message='No Contacts to display';
            }
            options = new List<SelectOption>();
            for(Contact conObj: contactList){
                options.add(new SelectOption(conObj.Id,''));
                desabl = false;
            }
        }  
    }
    public PageReference Redirect() {
        pagereference ref;
        if(acc.Id!=null){
           ref = new PageReference('/apex/Orders_Custom_Page_HO');
          ref.setRedirect(true);
        }
           return ref;
    }
    public pagereference cancel(){
        pagereference ref;
        if(retURL!=null){
          if(lkid!=null)
           {  
             ref = new pagereference('/'+lkid);             
            }
        }
        return ref; 
    }
    
}