Send PDF as Attachment in Visualforce Page

This blog will help you about How we can send an email with an attached file in it through Visualforce and Apex.

Here I am using two Visualforce pages, first one render as PDF and second hold the logic to send an email by using the first Visualforce page as an attachment.

AccountDetails.vfp

<apex:page standardController="Account" renderAs="PDF">    
    <apex:form id="thfrm">
      <center style="font-size:18px;font-weight:bold">Account Details</center>
        <br/>
        <table>
            <tr><td><b>Account Name : </b></td><td>{!Account.Name}</td></tr>
            <tr><td><b>Account Phone : </b></td><td>{!Account.Phone}</td></tr>
            <tr><td><b>Account Number : </b></td><td>{!Account.AccountNumber}</td></tr>
            <tr><td><b>Account Website : </b></td><td>{!Account.Website}</td></tr>
        </table>
    </apex:form>
 </apex:page>

SendAttachmentHandler.apxc

public class SendAttachmentHandler {
    
    @RemoteAction
    public static string SendAttachment(String sEmailAddress, String AccountId){
        String sMessage='';
        try{            
            Messaging.SingleEmailMessage semail = new Messaging.SingleEmailMessage();
            Messaging.EmailFileAttachment attach = new Messaging.EmailFileAttachment();
            // Replace Visualforce(AccountDetails) page with your visualforce page
            PageReference pref = page.AccountDetails;
            pref.getParameters().put('id',AccountId);
            pref.setRedirect(true);
            Blob b = pref.getContent();
            attach.setFileName('Account Details.pdf');
            attach.setBody(b);
            semail.setSubject('Account Details');
            semail.setToAddresses(new List<String>{sEmailAddress});
            semail.setPlainTextBody('Please find the attached Account details');
            semail.setFileAttachments(new Messaging.EmailFileAttachment[]{attach});
            Messaging.sendEmail(new Messaging.SingleEmailMessage[]{semail});
            sMessage='SUCCESS';
        }
        catch(Exception ex){
            sMessage=ex.getMessage()+'\n'+ex.getLineNumber()+'\n'+ex.getCause();
        }
        return sMessage;
    }
 }

EmailAttachment.vfp

 <apex:page controller="SendAttachmentHandler" sidebar="false" showHeader="false">    
    <center>
        <P style="font-size:22px;"><u>Send PDF as Attachment in Visualforce</u></P>
        <input type="text" value="" id="txtEmailAddress"/><br/><br/>
        <input type="button" onclick="SendEmailAttachment();" value="Send"/>
    </center>
    <script>
    function SendEmailAttachment(){
        var AccountId = '{!$CurrentPage.parameters.Id}';
        var emailAddress=document.getElementById('txtEmailAddress').value;
        if(emailAddress!=null && emailAddress!=''){
            TestHandler.SendAttachment(emailAddress,AccountId,function(result,event){
                if(event.status){
                    if(result=='SUCCESS'){
                        alert('Email sent successfully.');
                    }
                    else{
                        alert(result);
                    }
                }
            })
        }
        else{
            alert('Please provide email address!');
        }
    }
    </script>
 </apex:page>

link