Hi to all,

we are trying to begin with apex in my org, we need to have a vf page with this objects:

- A datatable with the opportunitys (done)

-Checkbox for each register (done)

-Subject and body textboxes for a email sending(done)

-A button wich send an email to de selected opportunities(done)

the problem has come with the last requeriment, we need a listbox with EmailTemplates, its done but when i show this textbox the send mail button dont send the email.

Here is my controller:

public with sharing class EmailfromCheks
 { 
  
 //public EmailTemplate Template;
 String[] Templates = new String[]{};
 public List<SelectOption> getItems()  {
     // if (TemplateList == null)
     //  {
            List<EmailTemplate> Template =
            [Select Id, Name From EmailTemplate Where IsActive = true order by FolderId limit 30];
      List<SelectOption> TemplateList = new List<SelectOption>();
     
        for (EmailTemplate c : Template)
         {
            TemplateList.add(new SelectOption( c.id, c.name ));
         }
     //}
     return TemplateList;
      }
 public String[] getTemplates() {
            return Templates;
        }
           
        public void setTemplates(String[] Templates) {
            this.Templates = Templates;
        }
 
  /*  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> OppLista;
    public List<cOpportunity> getOppLista()
      { 
       if(OppLista == null) {
       System.debug('Empieza');
       OppLista = new List<cOpportunity>(); 
       for(Opportunity c : [select Id, Name, EmailContactoCurso__c
       from Opportunity
       where Opportunity.CodigoDeCurso__c = :ApexPages.currentPage().getParameters().get('id')])
          { 
            OppLista.add(new cOpportunity(c)); 
          } 
       }
          return OppLista; 
      }
  public PageReference RefreshOpps()
  {
  List<Opportunity> selectedcOpp = new List<Opportunity>(); 
   for(cOpportunity cOpp : OppLista)
     { 
     if(cOpp.selected == true)
        { 
         selectedcOpp.add(cOpp.Opp); 
        } 
     } 
    return null;
  }
  public PageReference Send()
  {
 //    System.debug('Declaro');
    List<Opportunity> selectedcOpp = new List<Opportunity>(); 
   
   for(cOpportunity cOpp : getOppLista())
    { 
     if(cOpp.selected == true)
        { 
    System.debug('oportunidad seleccionada');
         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);
        System.debug('direcciones:' + toAddresses);
    //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; 
       ; 
       } 
    }     
 }

and here my vf page:

<apex:page controller="EmailfromCheks">
<apex:form >
<apex:selectList value="{!Templates}" size="1">
<apex:selectOptions value="{!Items}"/> if i comment this line the page send the email
<apex:actionSupport event="onchange" rerender="features"/>
</apex:selectList>
 <apex:pageBlock >
       <apex:pageBlockTable value="{!OppLista}" 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>
<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>