Hi,
My scenario is,
I have to get the details by location(State or Country).1st preference is State.
My output will be,

The input fields are Standard Country and State picklist .
The state or country (input) has  pass to the apex controller.
[ Eg:
1.country :USA State: NY---- input will be NY(State)
 2. country:Iceland  State : No States ,------ input will be  Iceland(Country) 
]
I dont know how to pass theat selected state picklist value to apex controller.

But i written some piece of codes.Please verify it and correct it. If anyone knows please tell me.

My Apex Code:

Public with sharing class SOSLController{
 Public List<loc__c> location {get;set;} // location
    public String imageURL{get;set;} // display a image
 Public String searchStr{get;set;} // find a string
 private ApexPages.StandardController stdController;
  /* display a image -method*/
 public  SOSLController(ApexPages.StandardController stdController)
  {
    imageURL='/servlet/servlet.FileDownload?file=';
    List< document > documentList=[select name from document where 
                                    Name='logo'];
    if(documentList.size()>0)
    {
      imageURL=imageURL+documentList[0].id;
    }
  }
    /* find a string and  run the sosl query*/
  Public void soslDemo_method(){
   location = New List<loc__c>();
   if(searchStr.length() > 1){
   String searchStr1 = searchStr;
     //  System.debug('message');
       String searchQuery = 'FIND \'' + searchStr1 + '\' IN ALL FIELDS RETURNING  loc__c(Comp__c, Type__c,Client__c, Competitor__c,Event_Name__c, evt_Des__c , Et_Addr__c, Dt_Ti__c, Ct_person__c,Ph_Num__c )';
   List<List <sObject>> searchList = search.query(searchQuery);
   location = ((List<loc__c>)searchList[0]);
       /* Message */
   if(location.size() == 0){
       apexPages.addmessage(new apexpages.message(apexpages.severity.Error, 'Sorry, Type the location correctly or There is no details of the requested location found'));
       return;
   }}
   else{
   apexPages.addmessage(new apexpages.message(apexpages.severity.Error, 'Please enter the location..'));
   return;
   }}}

My VFP:

<apex:page standardController="Contact"  extensions="SOSLController"  sidebar="false" showHeader="false">
  <apex:form >
       <apex:image url="{!imageURL}">
    </apex:image>
      <apex:pageBlock title="Enter a location" id="acct1">
          <apex:outputLabel value="Country" />
          <apex:inputField value="{!contact.MailingCountryCode}" />
            <apex:outputLabel value="State" />
          <apex:inputField value="{!contact.MailingStateCode}" />
    <apex:commandButton value="Submit" action="{!soslDemo_method}"  reRender="acct,error,acct1" />
    <apex:outputPanel title="" id="error">
     <apex:pageMessages ></apex:pageMessages>
     </apex:outputPanel>
  </apex:pageBlock>
    <apex:pageBlock title="Details of technical events" id="acct">
    <apex:pageblockTable value="{!location }" var="acc">
           <apex:column value="{!acc.Comp__c}"/>
         <apex:column value="{!acc.Type__c}"/>
          <apex:column value="{!acc.Client__c}"/>
        <apex:column value="{!acc.Competitor__c}"/>
        <apex:column value="{!acc.Event_Name__c}"/>
          <apex:column value="{!acc.evt_Des__c}"/>
        <apex:column value="{!acc.Et_Addr__c}"/>
          <apex:column value="{!acc.Dt_Ti__c}"/>
        <apex:column value="{!acc.Ct_Person__c}"/>
          <apex:column value="{!acc.Ph_Num__c}"/>
       </apex:pageblockTable>
    </apex:pageBlock>
    </apex:form>
</apex:page>


Thanks and Regards,
Sivasankari.M