查询教师联动课表

来源：互联网发布：js获取div auto高度编辑：程序博客网时间：2024/04/29 08:54

效果

注意：DropDownList 中AutoPostBack属性的值设置为Ture

.aspx

 <form id="form1" runat="server">       <div  style="text-align:center">                    <asp:Label ID="lblYear" runat="server" Text="学年:"></asp:Label>            <asp:DropDownList ID="ddlYear" runat="server" OnSelectedIndexChanged="ddlYear_SelectedIndexChanged" AutoPostBack="True" ></asp:DropDownList>            <asp:Label ID="lblTerm" runat="server" Text="学期:"></asp:Label>            <asp:DropDownList ID="ddlTerm" runat="server" OnSelectedIndexChanged="ddlTerm_SelectedIndexChanged" AutoPostBack="True" ></asp:DropDownList>            <asp:Label ID="lblCollege" runat="server"  Text="分院:"></asp:Label>            <asp:DropDownList ID="ddlCollege" runat="server" OnSelectedIndexChanged="ddlCollege_SelectedIndexChanged" AutoPostBack="True" ></asp:DropDownList>            <asp:Label ID="lblTeacher" runat="server" Text="教师:"></asp:Label>            <asp:DropDownList ID="ddlTeacher" runat="server" OnSelectedIndexChanged="ddTeacher_SelectedIndexChanged" AutoPostBack="True" ></asp:DropDownList>        </div>    </form>

.aspx.cs

 public partial class WebForm1 : System.Web.UI.Page    {        protected void Page_Load(object sender, EventArgs e)        {            if (!IsPostBack)            {                BindYear();                                                               //调用自定义方法向"学年"下拉列表框填充列表项                BindTerm();                                                               //调用自定义方法向"学期"下拉列表框填充列表项                BindCollege();                                                            //调用自定义方法向"分院"下拉列表框填充列表项                BindTeacher();                                                            //调用自定义方法向"教师"下拉列表框填充列表项            }        }        protected void BindYear()        {            ddlYear.Items.Clear();                                                        //   清空学年下拉列表框            int startYear = DateTime.Now.Year - 10;            int currentYear = DateTime.Now.Year;            for (int i = startYear; i <= currentYear; i++)                                //向学年下拉列表添加项            {                ddlYear.Items.Add(new ListItem((i - 1).ToString() + "-")+i.ToString());            }            ddlYear.SelectedValue = (currentYear - 1).ToString() + "-" + currentYear.ToString();        }        protected void BindTerm()        {            ddlTerm.Items.Clear();                                                                //清空学期下拉列表            for (int i = 1; i <= 2; i++)            {                ddlTerm.Items.Add(i.ToString());            }        }        protected void BindCollege()        {            ddlCollege.Items.Clear();            ddlCollege.Items.Add(new ListItem("计算机学院"));            ddlCollege.Items.Add(new ListItem("管理学院"));            ddlCollege.Items.Add(new ListItem("电子信息学院"));        }        protected void ddlCollege_SelectedIndexChanged(object sender, EventArgs e)        {            BindTeacher();        }        protected void BindTeacher()        {            ddlTeacher.Items.Clear();            switch(ddlCollege.SelectedValue)                                          //根据不同学院添加不同的老师姓名            {                case "计算机学院":                                                   //在实际工程中添加的来源于数据库                    ddlTeacher.Items.Add(new ListItem("马云"));                    ddlTeacher.Items.Add(new ListItem("马化腾"));                    ddlTeacher.Items.Add(new ListItem("超级玛丽"));                    break;                case "管理学院":                    ddlTeacher.Items.Add(new ListItem("李彦宏"));                    ddlTeacher.Items.Add(new ListItem("李开复"));                    break;                case "电子信息学院":                    ddlTeacher.Items.Add(new ListItem("刘强东"));                    ddlTeacher.Items.Add(new ListItem("蔡国庆"));                    break;           }        }              protected void ddlYear_SelectedIndexChanged(object sender, EventArgs e)        {        }        protected void ddlTerm_SelectedIndexChanged(object sender, EventArgs e)        {        }        protected void ddTeacher_SelectedIndexChanged(object sender, EventArgs e)        {        }    }}

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