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SK chantiSK chanti 

Unable to Rendered the particular pageBlock Section

Hi every one i'm unable to rendered the particular section of fields in edit view from my custom vf page.
<apex:page standardController="Event__c">
    <apex:sectionHeader title="New Event"> </apex:sectionHeader>
    <apex:form >
        <apex:pageBlock title="Event Edit" mode="edit">
            <apex:pageBlockButtons >
                <apex:commandButton action="{!save}" value=" Save"> </apex:commandButton>
                <apex:commandButton action="{!cancel}" value="Cancel"></apex:commandButton>
            </apex:pageBlockButtons>
            
            
                <apex:pageBlock rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}">
                    <apex:pageBlockSection title="Information" columns="1"> 
                        <apex:inputField value="{!Event__c.Name}" required="true" label="Educator’s Name" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Date__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Education_Team_Member__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Location_of_Event_text__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Return_Visit_del__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Topic__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Subject__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Visit_for_academic_year_del__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Schools__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Address__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Grade_Level_del__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Teacher_s_Name_del__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_students__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Content_Area_del__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Presentation_Description_del__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Student_Mastery_del__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Total_Staff_Hours_del__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Mileage_del__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Supplies_Cost_del__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Grant_ed__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Pictures_uploaded_to_dropbox_del__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}" ></apex:inputField>
                        <apex:inputField value="{!Event__c.Mistery__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Type_of_Grant__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Service_Project_Y_N__c}" rendered="{!IF(Event__c.EventValueEUD__c =''|| Event__c.EventValueEUD__c= null  ,true,false)}"></apex:inputField>
                    </apex:pageBlockSection>
                </apex:pageBlock>
                
                <apex:pageBlock rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}">
                    <apex:pageBlockSection title="Information" columns="1"> 
                        <apex:inputField value="{!Event__c.Name}" required="true" label="Sweeps Name" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Date__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Sweeps_Crew_Leader_del__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Location_of_Event_del__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_in_crew_del__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_workers__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_bags__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_tires__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_Code_Issues_Reported__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Intersections__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_intersections_cleaned__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Description_of_the_intersections__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_parkes_cleaned_in_the_area__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Description_of_the_parks__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Grant_s_del_c__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Is_this_location_in_NCEEP__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Cost__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Mileage__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Streets_Covered__c}" rendered="{!IF(Event__c.EventValueSwp__c =''|| Event__c.EventValueSwp__c= null  ,true,false)}"></apex:inputField>
                    </apex:pageBlockSection>
                </apex:pageBlock>
                
                <apex:pageBlock rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}">
                    <apex:pageBlockSection title="Information" columns="1"> 
                        <apex:inputField value="{!Event__c.Name}" required="true" label="Partnership Name" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Date__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Location_ps__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Grant_p__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Event_Type_del__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Category__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Code_Issues_Reported_YTD_del__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Code_Issues_Resolved_YTD_del__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Quarterly_cleanup_event_del__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Monthly_cleanup1__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_Volunteers__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_bags__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_Trash_Bags__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_psp_Tires__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Partners_Description1__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Cost__c}" rendered="{!IF(Event__c.EventValuePsp__c =''|| Event__c.EventValuePsp__c= null  ,true,false)}"></apex:inputField>
                    </apex:pageBlockSection>
                </apex:pageBlock>
                
                <apex:pageBlock rendered="{!IF(Event__c.EventValueSP__c =''|| Event__c.EventValueSP__c= null  ,true,false)}">
                    <apex:pageBlockSection title="Information" columns="1"> 
                        <apex:inputField value="{!Event__c.Name}" required="true" label="ServiceProjects Name" rendered="{!IF(Event__c.EventValueSP__c =''|| Event__c.EventValueSP__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Date__c}" rendered="{!IF(Event__c.EventValueSP__c =''|| Event__c.EventValueSP__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Location_of_Event_del__c}" rendered="{!IF(Event__c.EventValueSP__c =''|| Event__c.EventValueSP__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Group_Organization__c}" rendered="{!IF(Event__c.EventValueSP__c =''|| Event__c.EventValueSP__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Contact_info__c}" rendered="{!IF(Event__c.EventValueSP__c =''|| Event__c.EventValueSP__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_Volunteers__c}" rendered="{!IF(Event__c.EventValueSP__c =''|| Event__c.EventValueSP__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_bags__c}" rendered="{!IF(Event__c.EventValueSP__c =''|| Event__c.EventValueSP__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Number_of_tires__c}" rendered="{!IF(Event__c.EventValueSP__c =''|| Event__c.EventValueSP__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Cost__c}" rendered="{!IF(Event__c.EventValueSP__c =''|| Event__c.EventValueSP__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Event_sponsor__c}" rendered="{!IF(Event__c.EventValueSP__c =''|| Event__c.EventValueSP__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Other_Partners1__c}" rendered="{!IF(Event__c.EventValueSP__c =''|| Event__c.EventValueSP__c= null  ,true,false)}"></apex:inputField>
                        <apex:inputField value="{!Event__c.Does_this_Project_Related_to_NCEEP1__c}" rendered="{!IF(Event__c.EventValueSP__c =''|| Event__c.EventValueSP__c= null  ,true,false)}"></apex:inputField>
                    </apex:pageBlockSection>
        
 </apex:pageBlock>
 </apex:pageBlock>
    </apex:form>
</apex:page> 
NagaNaga (Salesforce Developers) 
Hi Sk,


you need to wrap the PageBlock inside <apex:outputPanel> tag.

Use the following code. It will reRender successfully.

CONTROLLER--
Public with sharing class myControllr
{
     Public Boolean ShowpageBlockFlag{get;set;}
     Public Account accRec{get;set;} 
       Public myControllr (){ 
         accRec = [select name,id,accountnumber from account limit 1];   ShowpageBlockFlag = false;
      }   
     Public void ShowBlockMethod(){ 
       if(ShowpageBlockFlag == true){ShowpageBlockFlag = false;}
       else{ShowpageBlockFlag = true;}
     }
}


APEX PAGE--
<apex:page controller="myControllr">
<!-- Render and Rerender Demo -->
    <apex:form >
      
       <apex:pageBlock >
        <apex:commandButton value="Show Bottom Page Block" action="{!ShowBlockMethod}" reRender="PGB2"/>
       </apex:pageBlock>
       
       <apex:outputPanel id="PGB2">
           <apex:pageBlock rendered="{!ShowpageBlockFlag}">
            Account Name  :<apex:outputField value="{!accRec.name}"/>
                <br/>
            Account Number :<apex:outputField value="{!accRec.accountnumber}"/>
           </apex:pageBlock>
       </apex:outputPanel> 
    </apex:form>
</apex:page>

Please let me know if this helps

Best Regards
Naga Kiran