Hi

I am getting No Records in the page showing No Units to display
can any one help me in this

I have created a Button and calling the below VF :
I have the following code for VF and Controller
++++++++++++++++++++Page++++++++++++++++++++
<apex:page StandardController="Project__c" extensions="Add_Units_Site_Project">
 <apex:form >
 <apex:outputPanel >
  <apex:pageBlock id="pageblock">
 
     <apex:pageBlockButtons >         
     <apex:commandButton Value="Process Selected Units" onclick="return validateSelection1();"/>
     <apex:commandButton Value="Go Back" action="{!cancel}" />
     </apex:pageBlockButtons>
     
     <apex:pageBlockSection title="Unit Events" id="unitevents" columns="1" collapsible="true" >
     
     
     
     <apex:pageBlockTable value="{!uniteventlist}" id="TableData" var="u">
     <!--rendered="{!NOT(ISNULL(uniteventlist))}"   -->
     
     <apex:column headerValue="Select All" >    
     <apex:facet name="header">
     <apex:inputCheckbox id="chkSelectAll"  title="Select All" value="{!chkFlag}">
     <apex:actionSupport event="onclick" action="{!chkAllBox}" />
     </apex:inputCheckbox>
     </apex:facet>
     <apex:selectCheckboxes value="{!Selected}" id="ids" >
     <apex:selectOption itemvalue="{!u.ID}"  />
     </apex:selectCheckBoxes>
     </apex:column>
     <apex:column headerValue="Unit Event Id"><apex:outputField value="{!u.Otg_ID__c}"/></apex:column>
     
     <apex:column headerValue="Outage Type"> <apex:outputField value="{!u.Otg_Type__c}"/></apex:column>
     <apex:column headerValue="Outage Quarter"> <apex:outputField value="{!u.Otg_Qtr__c}"/></apex:column>
        
     </apex:pageBlockTable>
     <apex:outputLabel value="No Units are available for this Site Outage Project Account" rendered="{!NoOfUnits == 0}"> </apex:outputLabel>
     
     </apex:pageblocksection>
     
     <apex:pageBlockButtons location="bottom" rendered="{!NOT(ISNULL(uniteventlist))}">
        <table width="100%"  rendered="{!NOT(ISNULL(uniteventlist))}"><tr></tr><tr><td align="left">
        <apex:commandLink value="<< First" action="{!getFirst}" reRender="pageblock" rendered="{!hasFirst}" />
        <apex:outputText value="<< First" rendered="{!NOT(hasFirst)}" /> &nbsp;
        <apex:commandLink value="< Previous" action="{!getPrev}" reRender="pageblock" rendered="{!hasPrev}" />
        <apex:outputText value="< Previous" rendered="{!NOT(hasPrev)}" /> &nbsp;
        <apex:commandLink value="Next >" action="{!getNext}" reRender="pageblock" rendered="{!hasNext}" />
        <apex:outputText value="Next >" rendered="{!NOT(hasNext)}" /> &nbsp;
        <apex:commandLink value="Last >>" action="{!getLast}" reRender="pageblock" rendered="{!hasLast}" />
        <apex:outputText value="Last >>" rendered="{!NOT(hasLast)}" /> &nbsp;
        </td><td align="right">
        <apex:outputText >Records {!StartRec}-{!EndRec} of {!NoOfUnits} </apex:outputText>
        </td></tr></table>
     </apex:pageBlockButtons>
    
     
  </apex:pageBlock>
  </apex:outputpanel>
 </apex:form>
 
  <script type="text/javascript">

    var selectedCount = 0;  
    function validateSelection1()
    {        
        var inputElem = document.getElementsByTagName("input");
        for(var i=0; i<inputElem.length; i++)
        {
        
        if(inputElem[i].id.indexOf("ids")!=-1 || inputElem[i].id.indexOf("chkSelectAll")!=-1)
        {
            if(inputElem[i].checked==true)
            {
            selectedCount=1;
            }
        }   
    }
     if(selectedCount == 0)
      {
          alert('Select a Unit to add to the Site Outage Project ');
          return false;
      }
        return true;
    }  

  </script>

</apex:page>

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
And the Controller as follows :
++++++++++++++++++Contoller +++++++++++++++++++++++++++++++++++
Public Class Add_Units_Site_Project{

Public Project__c proj {get;set;}
//Public Installed__c IB {get;set;}
//Public Outage_c units {get;set;}
Public List <Installed> IBlist = new List <Installed>();
Public List <Outage__c> Units = new List <Outage__c>();
Private String projid;
Public String Accid;
Public Integer NoOfUnits{get;set;}
Private Integer NextCount=0;
Public Integer NoOfRows=20;
Public Boolean hasNext{get;set;}
Public Boolean hasPrev{get;set;}
Public Boolean hasFirst{get;set;}
Public Boolean hasLast{get;set;}
Public Integer StartRec{get;set;}
Public Integer EndRec{get;set;}
Public void getNext()
    {
        if(NextCount+NoOfRows <= NoOfUnits)
            NextCount+=NoOfRows;
        else
            NextCount = NoOfUnits - NoOfRows;
    }
    Public void getPrev()
    {
        if(NextCount-NoOfRows >=0)
            NextCount-=NoOfRows;
        else
            NextCount=0;
    }
    Public void getFirst()
    {
        NextCount=0;
    }
    Public void getLast()
    {
        NextCount=NoOfUnits - NoOfRows;
    }

    public Add_Units_Site_Project(ApexPages.StandardController controller) {
       //Fetching the Current Record ID
         projid =ApexPages.currentPage().getParameters().get('id');
         proj =[select id,name,Account__c,Account__r.id,Account_Name__c,RecordTypeid from Project__c where id =: projid];        
         
         //Fetching Current Record Account ID
         Accid = [select id,name from Account where id =:proj.Account__c].id;
         
         IBlist = [Select id,name,Account__r.id from Installed__c where Account__c = : Accid];
         Units = [Select id,name,S_N__c,Site_Outage_project__c from Outage__c where S_N__c in : IBList ];
         
    }
    
 public List<Outage__c> uniteventlist= new List<Outage__c>();
 public List<Outage__c> getuniteventlist() {

    if(uniteventlist.size()==0)
        return null;
   
    For(Integer i=0; i<NoOfRows && NextCount+i < NoOfUnits; i++)
    {
       Units.add(uniteventlist[NextCount+i]);
    }
     if(NextCount <= 0)    
            {
                hasFirst=False;
                hasPrev=False;
            }
            else
            {
                hasFirst=True;
                hasPrev=True;
            }
            if(NextCount >= (NoOfUnits - NoOfRows))
            {
                hasLast=False;
                hasNext=False;
            }
            else
            {
            
                hasLast=True;
                hasNext=True;
            }

            StartRec=(NoOfUnits == 0)?0:NextCount+1;
            if(StartRec+NoOfRows > NoOfUnits)
                EndRec=NoOfUnits;
            else
                EndRec=StartRec+NoOfRows -1;
     
    if(Units.size()>0)
        return Units ;
    else { return null; }
 
    }
 public boolean chkFlag{get; set;}
    
    public void chkAllBox()
    {
        if(chkFlag == true)
        {
            for(outage__c unitevnts : uniteventlist )
            {
                Selected.add(unitevnts.id);
            }
        }
        else
        Selected.clear();
    }
    public id[] selected = new  id[]{};
    public id[] getSelected()
    {
       return Selected;
    }
    public void setSelected(id[] selected)
    {  
       if(chkFlag == false)
       this.Selected.addAll(selected);
    }



}