//to get user inputs public void getData() { //creating a object from student class Student objStudent = new Student(); objStudent.firstName = txtFirstName.Text; //objStudent.lastName = txtLastName.Text; objStudent.universityID = txtUniversityID.Text; objStudent.age = Convert.ToInt32(txtAge.Text); objStudent.dateOfBirth = Convert.ToDateTime(dtpBirthDate.Value); objStudent.adress = txtAdress.Text; objStudent.DepartmentID = Convert.ToInt32(cmbDepartment.SelectedValue); systemManager objsystemManager = new systemManager(); objsystemManager.InsertStudentDetails(objStudent); }