internal void HandleReadReceipt(MessageItem message)
{
if (message == null)
{
throw new ArgumentNullException("message");
}
if (Utilities.GetQueryStringParameter(base.Request, "sndrct", false) != null)
{
message.SendReadReceipt();
this.Infobar.AddMessageLocalized(641302712, InfobarMessageType.Informational);
return;
}
if (!this.IsEmbeddedItem)
{
InfobarMessageBuilder.AddSendReceiptNotice(base.UserContext, this.Infobar, message);
}
}