UsrSrch

private void ButtonUsrSrchClick(object sender, RoutedEventArgs e)
{
    try
    {
        var first = "Harry";
        var last = "Rabbit";

        int max = 3;
        var messageType = new UsrSrchRq_MType()
        {
            FirstName = first,
            IMSOrgId = string.Empty,
            JESSrchMsgRqHdr = Helper.JesSrchMsgRqHeader(max),
            LastName = last
        };

        var callback = this.messageBus.Send(messageType);

        var errors = Helper.CallbackErrors(callback, "ButtonUsrSrchClick");
        if (!string.IsNullOrWhiteSpace(errors))
        {
            this.UpdateListbox(errors);
        }
        else
        {
            try
            {
                this.OnUsrSrch(callback.WaitForResponse(TimeSpan.FromSeconds(10)));
            }
            catch (Exception ex)
            {
                this.UpdateListbox("ButtonUsrSecTokenRetrvClick exception:  " + ex.Message, true);
            }
        }
    }
    catch (Exception ex)
    {
        this.UpdateListbox("UsrSrch failed:  " + ex, false, true);
    }
}