I were coding a web project aspx, c#. i have a problem about load data by ajax:
- a dropdownlist1 used to contain all classes in a school
- a dropdownlist2 used to contain all students in a class
-> i want datas in dropdownlist2 are loaded (by ajax) after i have selected a value of dropdownlist1
Data: Class(id, classname), Student(id, name, ClassID)
please help me! thank you so much!