I noticed that , rerenderinf do not work, when the field is required , anyone know why is it the case ?

<apex:outputPanel id="header01"  layout="block" styleClass="pbHeader">            
                 <table class="detailList" cellspacing="0" cellpadding="0" border="0">                           
                    <tr>
                       <td class="labelCol">{!$ObjectType.DomaineMarque__c.fields.Name.label}</td>
                        <td class="dataCol" style="width:70%">
                             <div class="requiredInput">
                                <div class="requiredBlock"></div>
                                 <apex:selectList id="dom" value="{!selectedDomaine}" size="1" onchange="RefreshHeader();">
                                      <apex:selectOptions value="{!DomaineList}"/>
                                 </apex:selectList>
                                 <apex:actionFunction name="RefreshHeader" immediate="true" action="{!Refresh}" rerender="header01" status="myStatus" />
                              </div>
                          </td>
                    </tr>
                    <tr style="display:{!IF(selectedDomaine == 'new','','none')}">
                        <td class="labelCol">{!$ObjectType.DomaineMarque__c.fields.Type__c.label}</td>
                        <td class="dataCol"><apex:inputfield value="{!domaine.Type__c}" /></td>
                    </tr>
                    <tr style="display:{!IF(selectedDomaine == 'new','','none')}">
                        <td class="labelCol">{!$ObjectType.DomaineMarque__c.fields.Article__c.label}</td>
                        <td class="dataCol"><apex:inputfield value="{!domaine.Article__c}"/></td>
                    </tr>
                    <tr style="display:{!IF(selectedDomaine == 'new','','none')}">
                        <td class="labelCol">{!$ObjectType.DomaineMarque__c.fields.Nom__c.label}</td>
                        <td class="dataCol"><apex:inputfield value="{!domaine.Nom__c}" required="true"/></td>
                    </tr>  
                </table>          
           </apex:outputPanel>

if i remove the required=true part, the rerendering works fine. Is this a salesforce bug?

Hi ,

I am new for webservices,For better understanding pls give me the small example of webservices in visualforce and apex.

Thanks