Admin/JinHuo.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;
using System.Data.SqlClient;
public partial class JinHuo : System.Web.UI.Page
{
    Alert alert = new Alert();
    SqlHelper data = new SqlHelper();
    public string DownPath;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {

            Type();
            GetChanp();
        }
    }
    /// <summary>
    /// 绑定类别
    /// </summary>
    private void Type()
    {

        DropDownList1.DataSource = data.GetDataReader("select * from  Class  ");
        DropDownList1.DataTextField = "Name";
        DropDownList1.DataValueField = "id";
        DropDownList1.DataBind();

    }
    private void GetChanp()
    {
        DropDownList2.DataSource = data.GetDataReader("select * from  ChanPin where TypeName='"+DropDownList1.SelectedItem.Text+"'   ");
        DropDownList2.DataTextField = "Name";
        DropDownList2.DataValueField = "id";
        DropDownList2.DataBind();
        this.DropDownList2.Items.Insert(0, new ListItem("请选择", "0"));
    }
    private void BinderChanpin()
    {

        SqlDataReader dr;
        dr = data.GetDataReader("select * from  ChanPin where id='" + DropDownList2.SelectedValue + "'");
        if (dr.Read())
        {

            txtds.Text = dr["ds"].ToString();


            Image1.ImageUrl ="../"+ dr["Images"].ToString();
            txtdanjia.Text = dr["danjia"].ToString();
            txtguige.Text = dr["guige"].ToString();
        }