Hi,
iam trying to delete the records using vf pages but can't delete.It not display any errors but no result.Tell me the suitable Answer

My code is
VF Page:
<apex:page standardController="contact" extensions="deletemultiplecont" recordSetVar="contacts" >
    <apex:form id="frm">
          <apex:pageblock id="pgblk">
         
           <table class="list " border="0" cellpadding="0" cellspacing="0">
           <tr class="headerRow" >
              
              <th class="headerRow"> Action </th>
              <th class="headerRow"> Name </th>
              <th class="headerRow"> MailingCity </th>
              <th class="headerRow"> Phone </th>
           </tr>
          <th> <apex:repeat value="{!contacts}" var="cont">
           <tr class="dataRow">
               
                <td class="dataCell"> <apex:commandlink value="delete" action="{!delmultplerec}" oncomplete="location.reload();">
                   <apex:param value="{!cont.id}" name="Id"/> 
                 </apex:commandLink> </td>
               
              <td class="dataCell"> <apex:outputText value="{!cont.Name}"/> </td>
              <td class="dataCell"> <apex:outputText value="{!cont.MailingCity}"/> </td>
              <td class="dataCell"> <apex:outputText value="{!cont.phone}"/> </td>  
             
           </tr>
           </apex:repeat> </th>
           
        </table>
                 
      </apex:pageblock>
    </apex:form>

</apex:page>

Controller Class:

Public with sharing class deletemultiplecont
{
  public string Name{set;get;}
  public string Phone{get;set;}
  public string MailingCity{get;set;}
  public string asgn{get;set;}
  public contact cdel = new contact();
 
 public deletemultiplecont(apexpages.standardsetcontroller setcon)
  {
  
  }
  
  Public pagereference delmultplerec()
  {
        Id contactId = apexpages.currentpage().getParameters().get('Id');
        system.debug('hidden val is..!!' +asgn);
        try
            {
            
            cdel = [select id from contact where id =: contactId];
            system.debug('delete rec is..!!' +cdel);
            delete cdel;            
            return NULL;
            }
             catch(exception e)
             {
                System.debug('The following exception has occurred: ' + e.getMessage());
                return NULL;
             } 
  }
}

Regards
Galeeb SK