Hi

I have a pageblocktable which has to be rerendered in order to dispaly the updated field values but it fails to do so.

Following is my code.

Please help me resolve the issue.

<apex:page sidebar="false" Controller="MyLibrary">

 <apex:form >
   <apex:pageBlock >
    <apex:pageBlockSection columns="1">
    
     <apex:PanelGrid width="30%">
       <apex:pageBlockSection >
           <apex:outputLabel value="Parent Folder" styleClass="labelCol first last" for="parent"/>
               <apex:selectList value="{!SelectedParentFolder}" size="1" id="parent" >
                      <apex:selectOptions value="{!ParentFolderList}" />
                       <apex:actionSupport event="onchange" reRender="folder"/>
               </apex:selectList>
         </apex:pageBlockSection>   
      </apex:PanelGrid>
     
 
        <apex:PanelGrid id="folder" width="30%">
             <apex:pageBlockSection >
             <apex:outputLabel value="Sub Folder" styleClass="labelCol first last" for="sfolder"/>
                   <apex:selectList value="{!SelectFolder}" size="1" id="sfolder" >
                          <apex:selectOptions value="{!FolderList}" />
                           <apex:actionSupport event="onchange" reRender="docs" action="{!Go}"/>
                   </apex:selectList>
             </apex:pageBlockSection>
       </apex:PanelGrid>  
   
  </apex:pageBlockSection>

<apex:pageBlockSection columns="1" id="docs">
    <apex:pageMessage severity="info" summary="Sorry the Folder has no Content to display." rendered="{!if(UserLib.size!=0,if(Docs.size==0,true,false),false)}"/>

   <apex:pageBlockTable value="{!Docs}" var="d" rendered="{!if(Docs.size>0,true,false)}" id="mytable">
    
       <apex:column >
             
               <apex:outputLink value="/servlet/servlet.FileDownload?file={!d.Document_Id__c}" >
                 <apex:image url="{!URLFOR($Resource.LibraryImages)}" title="Click to Download" />  
               
                 <apex:actionSupport event="onclick" rerender="mytable" action="{!incrementCounter}">
                       <apex:param assignTo="{!SelectedId}" name="selId" value="{!d.Id}"/>
                 </apex:actionSupport>
                 
               </apex:outputLink>   
           </apex:column>

<apex:column headerValue="Downloaded" >
            <apex:outputText value="{!d.Counter__c}" />   
     </apex:column>
     
   
   </apex:pageBlockTable>
</apex:pageBlockSection>
 </apex:pageBlock>

--------------------------------------

 public void go()
 {
     
       Docs=new List<Document_Details__c>();
       Docs.clear(); 
       
     try{
 
       MyLib=[select id from My_Library__c where Folder__c=:SelectFolder];
       UserLib =[select Accessed_by_User__c from User_Library__c where My_Library__c=: MyLib.id ];
       
      if(UserLib.size()!=0)
      {
          
           for (Integer j = 0; j< UserLib.size(); j++)
            {
               if(u.id==UserLib[j].Accessed_by_User__c)
               {   
                    Docs=[Select id, Name__c, Document_Id__c, counter__c,Uploaded_by__c,Type__c,Description__c,Document_Created_On__c,My_Library__c From Document_Details__c where My_Library__c=: MyLib.id order by Name__c ];
                    system.debug('***'+docs);
                                   
               }
               
            }   
      }
      
      
    
   }catch(Exception e){}
 }
 
    public pagereference incrementCounter()
    {
       
        UpdateCount = [select id, counter__c from Document_Details__c where id =:SelectedId];  
        
        Decimal num= updatecount.counter__c;
        updatecount.counter__c=num+1;

        update updatecount;
        
        go();
               
      return null;
       
        
    }
             
The pageBlockTable doesn't seem to rerender. however the counter is working fine.