将list转为DataTable

//将list转为DataTable
        DataTable mailsTbl = new DataTable();
        mailsTbl.Columns.Add("from");
        mailsTbl.Columns.Add("sendDate");
        mailsTbl.Columns.Add("subject");
        mailsTbl.Columns.Add("id");
        DataRow drow;
        for (int i = 0; i < mailList.Count; i++) 
        {
            drow = mailsTbl.NewRow();
            drow["from"] = mailList[i].MainEntity.From.ToAddressListString();
            drow["sendDate"] = mailList[i].MainEntity.Date;
            drow["subject"] = mailList[i].MainEntity.Subject;
            drow["id"] = mailList[i].MainEntity.MessageID;
            mailsTbl.Rows.Add(drow); 
        }