Hello,
What change do I need to do in the following codes, in order to make the "Edit" standard button redirect to a Visualforce Pages based on record type for a custom object?

The user should edit the record on the Visualforce Page.

Apex Class and VF page works properly when creating a new record with the "New" standard button, configurated with the following codes:

VF code
<apex:page standardController="ADELTESurvey__c" extensions="NewSurveyExtension" action="{!redirectToNewVFPage}"> </apex:page>

Apex Class
public class NewSurveyExtension {     public String recordTypeId;     public NewSurveyExtension(ApexPages.StandardController std) {     }     public Pagereference redirectToNewVFPage(){         Pagereference pg = null;         if(ApexPages.CurrentPage().getParameters().get('RecordType') != null){             recordTypeId = ApexPages.CurrentPage().getParameters().get('RecordType');             if(recordTypeId == Schema.SObjectType.ADELTESurvey__c.getRecordTypeInfosByName().get('Delivery').getRecordTypeId()){                 pg = new Pagereference('/apex/Satisfaction_Survey_Delivery'); // Add Parameters to Page if Needed             }else if(recordTypeId == Schema.SObjectType.ADELTESurvey__c.getRecordTypeInfosByName().get('Operation').getRecordTypeId()){                 pg = new Pagereference('/apex/Satisfaction_Survey_Operation'); // Add Parameters to Page if Needed             }             pg.setRedirect(true);             return pg;         }         return null;     } }

Any help would be appreciated,

Regards