hi,

i dont understand why you bind the data in this way:

<apex:pageBlockTable value="{!contacts}" var="c">

Where you are declaring contacts?

I wanna do the same with opportunities and i dont understand this.

thanks you.

public List<cContact> getContacts(){
        if(contactList == null){
            contactList = new List<cContact>();
        
            for(Contact c : [select Id, Name, Email, Phone, FirstName,LastName from Contact limit 10]){
                /* As each contact is processed we create a new cContact object and
                add it to the contactList */
                contactList.add(new cContact(c));
            }
        }
        return contactList;
    }

The part above, in the APEX controller, is bound to apex:pageBlockTable value="{!contacts}" var="c">.

Whenever in a Visual Force page use a variable like this (in this case {!contacts}), it will try to find a method called getVARIABLE(), which should return a List or Set of items (in this case getContacts(), which returns a list of contacts).

The var="c" simply assigns an variable name to each contact in the list while iterating over it, hence inside the loop, fields per contact are accessed using c.FIELDNAME.

Thank you very much for the response, i have a really problem whit my wrap controller, i was using like you have explain to me but it doesnt work.

I wanna have a combo box with the emails templates (its done and working) and a list of opportunities with checks buttons (here is my problem, i have no results on the page load but when i click my send button the table its filled with the opportunities). Could you take a look in my code?? any suggestion will be really appreciated :)

Controller:

 public class EmailfromCheks
 { 
 public EmailTemplate Template;
    public EmailTemplate getEmailTemplate()
      {
       if(Template == null) Template = new EmailTemplate();
       return Template;
      }
    public String[] selectedTemplate=new String[]{};
    public String[] getSelectedTemplate()
      {
     return selectedTemplate;
      }
    public void setSelectedTemplate(String[] sel)
      {
     selectedTemplate=sel;
      }
    public List<SelectOption> TemplateList;
    public List<SelectOption> getTemplate ()
      {
      if (TemplateList == null)
       {
            List<EmailTemplate> Template =
            [Select Id, Name From EmailTemplate Where IsActive = true order by FolderId limit 30];
         TemplateList = new List<SelectOption>();
        for (EmailTemplate c : Template)
         {
            TemplateList.add(new SelectOption( c.id, c.name ));
         }
     }
     return TemplateList;
      }
    public String subject { get; set; }
    public String body { get; set; }
    public List<cOpportunity> OppList {get; set;} 
    public List<cOpportunity> getOppList()
      { 
       System.debug('Empieza');
       OppList = new List<cOpportunity>(); 
       for(Opportunity c : [select Id, Name, EmailContactoCurso__c
       from Opportunity
       where Opportunity.CodigoDeCurso__c = :ApexPages.currentPage().getParameters().get('id')])
          { 
            OppList.add(new cOpportunity(c)); 
          } 
          return OppList; 
      } 
  public PageReference Send()
  {
   List<Opportunity> selectedcOpp = new List<Opportunity>(); 
   for(cOpportunity cOpp : getOppList())
     { 
     if(cOpp.selected == true)
        { 
         selectedcOpp.add(cOpp.Opp); 
        } 
     } 
    Messaging.SingleEmailMessage email = new Messaging.SingleEmailMessage();
 String addresses;
    System.debug('These are the selected Contacts...'); 
    for(Opportunity cOpp : selectedcOpp)
        { 
        if(addresses != null)
          { 
          addresses += ':' + cOpp.EmailContactoCurso__c; 
          } 
        else
          {
          addresses = cOpp.EmailContactoCurso__c;
          }
        String[] toAddresses = addresses.split(':', 0);
    email.setTemplateId(selectedTemplate[0]);
        email.setSubject(subject);
        email.setToAddresses( toAddresses );
        email.setPlainTextBody(body);
        // Sends the email 
        //    Messaging.SendEmailResult [] r =
        //           Messaging.sendEmail(new Messaging.SingleEmailMessage[] {email});  
       } 
       return null; 
     } 
  public  class cOpportunity
    {
     public Opportunity Opp {get; set;} 
     public Boolean selected {get; set;} 
     public cOpportunity(Opportunity c)
       { 
        Opp = c; 
       ; 
       } 
    }     
 }

 Apex code:

<apex:page controller="EmailfromCheks">
<apex:form >
 <apex:pageBlock >
    <apex:pageBlockButtons >
            <apex:commandButton value="Process Selected" action="{!send}" rerender="table"/>
    </apex:pageBlockButtons>
    <apex:pageBlockTable value="{!OppList}" var="c" id="table">
         <apex:column >
              <!-- This is our selected Boolean property in our wrapper class -->
              <apex:inputCheckbox value="{!c.selected}"/>
         </apex:column>
          <!-- This is how we access the contact values within our cContact container/wrapper -->
         <apex:column value="{!c.Opp.Name}" />
         <apex:column value="{!c.Opp.EmailContactoCurso__c }" />
    </apex:pageBlockTable>
 </apex:pageBlock>
<!--<apex:selectList value="{!selectedTemplate}" size="1">-->
<!--<apex:selectOptions value="{!Template}"/>-->
<!-- <apex:actionSupport event="onchange" rerender="features"/>-->
<!--</apex:selectList>-->
<br /><br />
            <apex:outputLabel value="Subject" for="Subject"/>:<br />    
            <apex:inputText value="{!subject}" id="Subject" maxlength="80"/>
            <br /><br />
            <apex:outputLabel value="Body" for="Body"/>:<br />    
            <apex:inputTextarea value="{!body}" id="Body"  rows="10" cols="80"/>          
            <br /><br /><br />
            <apex:commandButton value="Send Email" action="{!send}" />
           </apex:form>
 </apex:page>

Hi sorry for the long post, i had found my problem, when i declare my list i have use this line:

public List<cOpportunity> OppList {get; set;}  
VF use this get function not the get function that i have declared getOppList, i have change it for this one: public List<cOpportunity> OppList; and now it works.

Thank you very much!

Good to hear you fixed it :)