Hi All,

I am working on a trigger that sends out an email everytime a Opprotunity record is created. I am using Visualforce email template and setting the TemplateId in the trigger code. But when I do this the merge fields are not Populated from the Opportunity record. Entire content of the Visualforce template is sent in the email except the merge field values. Following is the code:

trigger EmailOnOpp on Opportunity (after insert) {
     
for(Opportunity opp:Trigger.new)
{
Messaging.SingleEmailMessage email = new Messaging.SingleEmailMessage();
 
    String[] toRecipients;
    String[] ccRecipients;
    String templateApiName = 'New_VF_Template'; // This is the Visualforce template
    ID targetObjId;
    Id whatId;
    ID orgWideEmailId;
    Boolean saveAsActivity;
    Attachment[] attachList;
    
    
Id templateId;  
templateId = [select id, name from EmailTemplate where developername = : templateApiName].id;
    
    
    email.setToAddresses(toRecipients);
    email.setCcAddresses(ccRecipients);
    email.setTargetObjectId(opp.Assigned_User__c); // Lookup to the user record. 
    
    email.setorgWideEmailAddressId(orgWideEmailId);
    email.setTemplateId(templateId);
  
    
    email.setSaveAsActivity(false);      // save email as activity on the targetObjId (i.e. Contact). Note activity can't be saved on Users
    

    Messaging.sendEmail(new Messaging.SingleEmailMessage[] {email});
}
}

Any help on this is highly appreciated. 

Thanks.
Raghu