Hello!

I am making contact search page where the Results and Errors pageblocks render based on the value of their corresponding booleans:

• public boolean ResultsPresent
• public boolean ErrorsPresent

The problem is when I do this: 

<apex:pageBlock title="Results" rendered="{!ResultsPresent}"> 

or this

<apex:pageBlock title="Errors" id="ErrorSection" rendered="{!ErrorsPresent}">

I keep getting "Unknown Property" errors.

Here are the pageblocks in question:

<!-- Results Display -->
            <apex:pageBlock title="Results" rendered="{!ResultsPresent}"> 
                
                <apex:outputText value="There are currently '' results found." />
                                
                <apex:pageBlockSection >
                
                    <apex:pageBlockTable value="{!contacts}" var="c" id="contact-table">
                            
                            <apex:column >
                                <apex:facet name="header">Name</apex:facet>
                                {!c.Name}
                            </apex:column>
        
                            <apex:column >
                                <apex:facet name="header">Phone Number</apex:facet>
                                {!c.Phone}
                            </apex:column>
                            
                            <apex:column >
                                <apex:facet name="header">Email</apex:facet>
                                {!c.Email}
                            </apex:column>
                            
                        </apex:pageBlockTable>
                    
                </apex:pageBlockSection>
   
            </apex:pageBlock>
              
              
              
          <!-- Error Display -->    
          <apex:pageBlock title="Errors" id="ErrorSection" rendered="{!ErrorsPresent}">
              
                <apex:pageMessages id="ErrorsListing">
                  
                </apex:pageMessages>
              
          </apex:pageBlock>

Here is my Controller
 

public with sharing class Ctrl_ContactSearch
{
    public List<Contact> contacts { get; set; }
    
    public String name { get; set; }
    public String phone { get; set; }
    public String email { get; set; }   
    
    
   	public integer MatchingContacts = 0;
    
    public boolean ResultsPresent = false;
    public boolean ErrorsPresent = false;
    
    public boolean Error_NoResults = false;
    public boolean Error_FieldsEmpty = false;
    public boolean Error_NameSyntax = false;
   	public boolean Error_PhoneSyntax = false;
    public boolean Error_EmailSyntax = false;
    
    
   /* Name Input Validation Regex*/
   public static Boolean ValidationName (String name)
            {
              	Boolean NameIsValid = false;
                
              
                String nameRegex = '[a-zA-Z]*[\\s]{1}[a-zA-Z].*';
                Pattern PatternName = Pattern.compile(nameRegex);
                Matcher nameMatcher = PatternName.matcher(name);
                
                if (nameMatcher.matches())
                    {
                        NameIsValid = true;
                    } 
 
                return NameIsValid;	
			}
    
     
    /* Phone Input Validation Regex*/
    public static Boolean ValidationPhone (String phone)
            {
              	Boolean PhoneIsValid = false;
                
               
                String phoneRegex = '^([0-9\\(\\)\\/\\+ \\-]*)$';
                Pattern PatternPhone = Pattern.compile(phoneRegex);
                Matcher phoneMatcher = PatternPhone.matcher(phone);
                
                if (phoneMatcher.matches())
                    {
                        PhoneIsValid = true;
                    } 
                   
                return PhoneIsValid;		
			}          
    
   
     /* Email Input Validation Regex*/
     public static Boolean ValidationEmail (String email)
            {
              	Boolean EmailIsValid = false;
                
               
                String emailRegex = '^[a-zA-Z0-9._|\\\\%#~`=?&/$^*!}{+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,4}$';
                Pattern PatternEmail = Pattern.compile(emailRegex);
                Matcher emailMatcher = PatternEmail.matcher(email);
                
                if (emailMatcher.matches())
                    {
                        EmailIsValid = true;
                    } 
                    
                return EmailIsValid;	
			}       
    
    

    
    /* Runs when "Clear Fields" button is pressed*/
    public void ClearFields()
            {
               name = '';
               phone = '';
               email = ''; 
            }
    
    
    /* Runs when "Search Contacts" button is pressed*/
    public PageReference searchContacts()
        {
          			       
            /* Checks if input fields are empty*/
            if (name == '' && phone == '' && email == '')
                {
                    Error_FieldsEmpty = true;   
                    ApexPages.addmessage(new ApexPages.message(ApexPages.severity.ERROR,'Your fields are blank. Please enter your information in the remaining fields to proceed'));
                }
            
            else 
                {
                    /* Checks Input Validation Results*/                      
                    if (ValidationName(name) == false) 
                         {      
                              Error_NameSyntax = true;
                              ApexPages.addmessage(new ApexPages.message(ApexPages.severity.ERROR,'Inproper name format. Please enter name in following format : Firstname Lastname.'));
                          }
                                                                                 
                    if (ValidationPhone(phone) == false) 
                         {
                              Error_PhoneSyntax = true;
                              ApexPages.addmessage(new ApexPages.message(ApexPages.severity.ERROR,'Inproper phone number format. Please enter number in following format : XXX-XXX-XXXX.'));
                          }
                    
                    if (ValidationEmail(email) == false) 
                         {	 
                              Error_EmailSyntax = true;
                              ApexPages.addmessage(new ApexPages.message(ApexPages.severity.ERROR,'Inproper email format. Please enter email in following format : XXX@emailprovider.com'));
                          }
                        
                    /* Runs if all Validation results are 'true'*/ 
                    if (ValidationName(name) == true && ValidationPhone(phone) == true && ValidationEmail(email) == true)
                        {
                              ResultsPresent = true;
                              contacts = [select Name, Phone, Email from Contact where Name = :name or Phone = :phone or email = :email];
                              MatchingContacts = contacts.size();
                            
                              /* Checks if/how many matches were found from the search*/ 
                              if(MatchingContacts != 0)
                                  {  
                                     return null;
                                  }
                              
                              else
                                  {    
                                      Error_NoResults = true;
                                      ApexPages.addmessage(new ApexPages.message(ApexPages.severity.ERROR,'No matching Contacts were found.'));   
                                  }
                        }
                    
                   
                }
                    

              
         	 /* Displays "Error" field if any errors are found*/
            if (Error_NoResults == true || Error_FieldsEmpty == true || Error_NameSyntax == true || Error_PhoneSyntax == true || Error_EmailSyntax == true)
                {
                    ErrorsPresent = true;
                    ApexPages.addmessage(new ApexPages.message(ApexPages.severity.WARNING,'There are errors present. Please read and follow instructions accordingly.'));                     
                }     
            
            
           return null;     
      }           
}

In a similar vein, I'm trying to also make an outputtext box that displays the number of results based  the value of MatchingContacts  but when I do that, I ALSO get an unknown property error. 

What am I missing here?