I have a form with two combo boxes.ComboTeachers(TeacherID,TeacerName) and ComboStudents(StudentID,StudentName).ComboStudents is filtred by ComboTeachers and shows students of the teacher which is selected in ComboTeacher.When I click a student in a combo by after update event opens a query that shows student information from TableStudents. I want to have "all" in ComboStudent and when I click I want to see a query with all student information.How can I do it.Thanks in advance.