XDF/Admin/TeacherInput.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
using BLL;


namespace XDF.Admin
{
    public partial class TeacherInput : System.Web.UI.Page
    {
        protected void DropdownListTeachGrade()
        {
            DropDownListTeachGrade.Items.Add(new ListItem("大学"));
            DropDownListTeachGrade.Items.Add(new ListItem("高中"));
            DropDownListTeachGrade.Items.Add(new ListItem("初中"));
            DropDownListTeachGrade.Items.Add(new ListItem("小学"));
        }
        protected void DropdownListTeachSubject()
        {
            switch (DropDownListTeachGrade.SelectedValue)
            {
                case "大学":
                    DropDownListTeachSubject.Items.Clear();
                    DropDownListTeachSubject.Items.Add(new ListItem("数学"));
                    DropDownListTeachSubject.Items.Add(new ListItem("物理"));
                    DropDownListTeachSubject.Items.Add(new ListItem("化学"));
                    DropDownListTeachSubject.Items.Add(new ListItem("英语"));
                    DropDownListTeachSubject.Items.Add(new ListItem("计算机"));
                    break;
                case "高中":
                    DropDownListTeachSubject.Items.Clear();
                    DropDownListTeachSubject.Items.Add(new ListItem("语文"));
                    DropDownListTeachSubject.Items.Add(new ListItem("数学"));
                    DropDownListTeachSubject.Items.Add(new ListItem("英语"));
                    DropDownListTeachSubject.Items.Add(new ListItem("物理"));
                    DropDownListTeachSubject.Items.Add(new ListItem("化学"));
                    DropDownListTeachSubject.Items.Add(new ListItem("生物"));
                    DropDownListTeachSubject.Items.Add(new ListItem("历史"));
                    DropDownListTeachSubject.Items.Add(new ListItem("政治"));
                    DropDownListTeachSubject.Items.Add(new ListItem("地理"));
                    DropDownListTeachSubject.Items.Add(new ListItem("技术"));
                    break;
                case "初中":
                    DropDownListTeachSubject.Items.Clear();
                    DropDownListTeachSubject.Items.Add(new ListItem("语文"));
                    DropDownListTeachSubject.Items.Add(new ListItem("数学"));
                    DropDownListTeachSubject.Items.Add(new ListItem("英语"));
                    DropDownListTeachSubject.Items.Add(new ListItem("科学"));
                    break;
                case "小学":
                    DropDownListTeachSubject.Items.Clear();
                    DropDownListTeachSubject.Items.Add(new ListItem("语文"));
                    DropDownListTeachSubject.Items.Add(new ListItem("数学"));
                    DropDownListTeachSubject.Items.Add(new ListItem("英语"));
                    DropDownListTeachSubject.Items.Add(new ListItem("科学"));