Home/sjxz.aspx.cs

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using System;
using System.Collections;
using System.Configuration;
using System.Data;

using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;


public partial class Home_sjxz : System.Web.UI.Page
{
    private string da;
    protected void Page_Load(object sender, EventArgs e)
    {

        if (!IsPostBack)
        {
            if (Request.Cookies["hsusername"] == null)
            {
                Response.Write("<script language='javascript'>alert('重新登陆后再浏览！');location.href='../Default.aspx'</script>");
            }
            else
            {
                BindDrop();
            }

        }
    }


    private void BindDrop()
    {

        //将数据捆绑到下拉列表中
        DataTable dt = Dll.GridViewBindForLoad2("JC").Tables["OtherTable"];
        ddlvideo.DataTextField = "JC"; //设置ddl1事件SelectedIndexChanged改变后ddl2列表显示的数据
        ddlvideo.DataValueField = "id"; //设置列表提交后获得的字段，自己理解为隐藏绑定数据
        ddlvideo.DataSource = dt.DefaultView;
        ddlvideo.DataBind();
        ddlvideo.Items.Insert(0, new ListItem("请选择", ""));//第一项中加入内容,重点是绑定后添加  
    }
    protected void ddlvideo_selectchenge(object sender, EventArgs e)
    {
        DataTable dt = Dll.GridViewBindForLoad3("XK.id,XK.XK", "XK", "xuke", "xuke.XKid=XK.id", "JCid=" + ddlvideo.SelectedValue).Tables["OtherTable"];
        // DataTable dt= AllDataBind.GridviewSql("select xuke.id,XK.XK from xuke join XK on xuke.XKid=XK.id where JCid=" + ddlvideo.SelectedValue , "ddl2").Tables["OtherTable"];
        ddl2.DataTextField = "XK"; //设置ddl1事件SelectedIndexChanged改变后ddl2列表显示的数据
        ddl2.DataValueField = "id"; //设置列表提交后获得的字段，自己理解为隐藏绑定数据
        ddl2.DataSource = dt.DefaultView;
        ddl2.DataBind();
        ddl2.Items.Insert(0, new ListItem("请选择", ""));//第一项中加入内容,重点是绑定后添加  
    }
    protected void ddl2_selectcheng(object sender, EventArgs e)
    {
        ddl3.Items.Clear();
        ddl3.Items.Insert(0, new ListItem("请选择", ""));//第一项中加入内容,重点是绑定后添加  
        ddl3.Items.Insert(1, new ListItem("七年上", "71"));