How do you add attachments to MailObject?

[napstar]

When I try to add attachments using this method:
public void sendMail_VendorsWithEmail(string TO,string SUBJECT,string ATTACHMENTS)
{
/*this method creates an outlook email object
* attaches a file to it and email it out to the apporpriate vendor with emails
*/
string body=this.getEmailBody();
//creating oulook application class
Application outlook_app = new ApplicationClass();

//creatin message item
MailItem mail_msg = (MailItem)outlook_app.CreateItem(OlItemType.olMail Item);

//email fields
mail_msg.To = TO;
mail_msg.Subject = SUBJECT;
mail_msg.Body = body;
mail_msg.Attachments=ATTACHMENTS ;


//sending email
mail_msg.Send();

}
I get the following error msgs:
Property or indexer 'Microsoft.Office.Interop.Outlook._MailItem.Attach ments' cannot be assigned to -- it is read only Outlook_EmailSender_App

Cannot implicitly convert type 'string' 'Microsoft.Office.Interop.Outlook.Attachments'

what am I doing wrong?

[Plater]

Well the error message states that you are trying to use a string object as Attachments, when it expects an instance of:
Microsoft.Office.Interop.Outlook.Attachments

Try correcting the error it gives you and see where that gets you?