Visualforce page error display

Question

How to display the error message from a trigger to a custom visualforce page?

 public PageReference save()
    { 

        Student__c stud=new Student__c();
        stud.Firstname__c=student.Firstname__c;
        stud.Lastname__c=student.Lastname__c;
        stud.Address__c=student.Address__c;
        stud.Collegename__c=student.Collegename__c;
        stud.Branchname__c=student.Branchname__c;
        stud.Contact_Number__c=student.Contact_Number__c;
        stud.Date_Of_Birth__c=student.Date_Of_Birth__c;
        stud.Gender__c=student.Gender__c;
        studentlist.add(stud);

        try
       {
         if(studentlist!=null)
          {
            insert studentlist;

          }
       }
         catch(Exception e)
          {
          Apexpages.addMessage(new Apexpages.message(ApexPages.Severity.Error,e.getMessage()));

          }


     return null;
    }

i tried using this code but it does not display the message.

Answer 1

You need to add <apex:pageMessages/> to display error messages on visualforce page.

Refer apex:pageMessages

This component displays all messages that were generated for all components on the current page, presented using the Salesforce styling.