You can use the GetDayFromPoint method, and if the return is null, you know that the cursor is no positioned over a day. You can use the MouseClick event instead of the Click event so that you get the client coordinates without having to get the cursor position and convert.

 Hi,

 private void ultraMonthViewSingle1_Click(object sender, EventArgs e)
        {

           // Here i need to identify if the user clicked place is a day slot. because when every the user click in scroll button also this event fired and its //going to AddDayNotes method. i need to restrict this operation in user click

 if (<some Identifycation >)

{

AddDayNotes();

}

           
        }