Hello,

I have a VisualForce page from which I'm loading some Data , Validating and Saving it to SF. While processing this i need to show Loading icon. I've tried this with the help of some forums but no luck. 
 

<apex:pageBlockSection id="pbs">
         <apex:pageBlockSectionItem >
            <apex:outputLabel value="Select Object"/>
         </apex:pageBlockSectionItem>  
       
         <apex:pageBlockSectionItem >
             <apex:selectList size="1" value="{!Objselected}" >
                <apex:selectOptions value="{!ObjList}"/>
             </apex:selectList>
         </apex:pageBlockSectionItem> 
         
         <apex:pageBlockSectionItem >
             <apex:outputLabel value="Select File"/>
         </apex:pageBlockSectionItem>
         
         <apex:pageBlockSectionItem >
               <apex:inputFile value="{!contentFile}" filename="{!nameFile}" />          
         </apex:pageBlockSectionItem>
                           
          <apex:pageBlockSectionItem ></apex:pageBlockSectionItem> 
          
         
          
          <apex:pageBlockSectionItem id="pbsi">
             <apex:actionRegion id="area51" renderRegionOnly="false">
             <apex:commandButton action="{!ReadFile}" value="Validate File" id="theButton" disabled="{!vbutton}" status="spinnerStatus" rerender="pbsi"  /> 
             <apex:commandButton action="{!SaveFile}" value="Save" id="sButton"  disabled="{!sbutton}" status="spinnerStatus" rerender="form" /> 
            </apex:actionRegion>    
              
          </apex:pageBlockSectionItem> 
</apex:pageBlockSection>

When I use rerender, parameters are not passed to controller. Is there a way to overcome this.? 

Thanks
Vignesh