Hello Aruna,

In the order of asking the questions:

1. You could use an approach like the following:

      private void ultraDayView1_BeforeAppointmentEdited(object sender, Infragistics.Win.UltraWinSchedule.CancelableAppointmentEventArgs e)
        {
            e.Cancel = true;
        }

2. Basically what you could do here is similar to the above - you could supress the showing of the tooltip and display your own using 'UltraToolTipManager':

private void ultraDayView1_BeforeAppointmentToolTipDisplayed(object sender, Infragistics.Win.UltraWinSchedule.BeforeAppointmentToolTipDisplayedEventArgs e)
        {
            
            ultraToolTipManager1.SetUltraToolTip(ultraDayView1, new Infragistics.Win.UltraWinToolTip.UltraToolTipInfo("text", Infragistics.Win.ToolTipImage.Info, "title", Infragistics.Win.DefaultableBoolean.True));
            ultraToolTipManager1.ShowToolTip(ultraDayView1, new Rectangle(0,0,10,10), Cursor.Position);
            e.Cancel = true;
        }

Please feel free to let me know if I misunderstood you or if you have any other questions.