public string AuditIcon(IAuditable auditable)
{
DateFormatHelper dateHelper = new DateFormatHelper();
StringBuilder auditInfo = new StringBuilder();
auditInfo.AppendFormat("Created at: {0}\n", dateHelper.ToShortDateTime(auditable.CreatedAt));
auditInfo.AppendFormat("Created by: {0}\n", HtmlEncode(auditable.CreatedBy));
auditInfo.AppendFormat("Updated at: {0}\n", dateHelper.ToShortDateTime(auditable.UpdatedAt));
auditInfo.AppendFormat("Updated by: {0}\n", HtmlEncode(auditable.UpdatedBy));
return string.Format("<img src='/Content/images/audit.png' alt='{0}' />", auditInfo.ToString().Replace("'", "\\'"));
}