YuYue.aspx.cs

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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class YuYue : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            if (Session["MemberName"] == null)
            {
                Response.Write("<script language='javascript'>alert('没有登录，不能操作！');location='javascript:history.go(-1)';</script>");
            }
            else
            {
                GetInfo();
                GetDrop1();
            }
          
        }
    }


    private void GetInfo()
    {
        string sql = "select * from TB_ChangDi";
        DataTable dt = DBHelper.GetDataSet(sql).Tables[0];
        this.DropDownList1.DataSource = dt;
        this.DropDownList1.DataTextField = "ChangDiName";
        this.DropDownList1.DataValueField = "ID";
        this.DropDownList1.DataBind();
        
    }
    private void GetDrop23()
    {

        int iDr2 =Convert.ToInt32( this.DropDownList2.SelectedItem.Value);
        int iDr3 = Convert.ToInt32(this.DropDownList3.SelectedItem.Value);
        if (iDr2 == iDr3)
        {
            Response.Write("<script language='javascript'>alert('开始时间和结束时间不能一样！');window.navigate('YuYue.aspx');</script>");
            Response.End();
        }
        else if (iDr2 > iDr3)
        {
            Response.Write("<script language='javascript'>alert('开始时间不能大于结束时间！');window.navigate('YuYue.aspx');</script>");
            Response.End();
        }
        else
        {
            int DanJia = Convert.ToInt32(this.TextBox2.Text);
            this.TextBox3.Text = Convert.ToString(DanJia * (iDr3 - iDr2));