private string getFee()
 {
     DB_Connection.OpenConection();
     Query = "select fee from Fee where department_id='" + department_id + "' AND degree_id='" + degree_id + "' ";
     value = DB_Connection.ExecuteScalarQueries(Query);
     return(value);
 }
        private string getDepartmentID(string DepartmentName)
        {
            Query = "select department_id from Department where department_name='" + DepartmentName + "'";

            value = DB_Connection.ExecuteScalarQueries(Query);
            return(value);
        }
        private string getDegreeID(string DegreeName)
        {
            Query = "select degree_id from Degree where degree_name='" + DegreeName + "'";

            degree_id = DB_Connection.ExecuteScalarQueries(Query);
            return(degree_id);
        }
        //Functions to Register New Student

        private void insertStudent_Function()
        {
            getAllData();

            DB_Connection.OpenConection();

            Query = "insert into StudentRegisration.dbo.StudentInformation (student_FName,student_LName,student_Email,student_CNIC,student_PhoneNo,student_Address,student_Department,student_Degree,student_Class,student_InstallmentCount,student_PaidCount,student_RemainingCount,student_Gender)"
                    + "values ('" + fname + "','" + lname + "','" + email + "','" + cnic + "','" + phone + "','" + address + "','" + department + "','" + degree + "','" + studentClass + "','" + installments + "','" + 0 + "','" + installments + "','" + gender + "') SELECT SCOPE_IDENTITY()";

            student_id = DB_Connection.ExecuteScalarQueries(Query);

            department_id = getDepartmentID(comboBox_Department.Text);
            degree_id     = getDegreeID(comboBox_Degree.Text);
            fee           = getFee();
            installmentCount(Convert.ToInt32(fee));
        }