Admin/AddZuLin.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 Admin_AddZuLin : System.Web.UI.Page
{
    Alert alert = new Alert();
    SqlHelper data = new SqlHelper();
    public string DownPath;
    public string IsZulin;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {

            Type();
            GetChanp();
            Users();
        }
    }
    /// <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 Users()
    {

        users.DataSource = data.GetDataReader("select * from  Users  ");
        users.DataTextField = "name";
        users.DataValueField = "id";
        users.DataBind();

    }
    private void GetChanp()
    {
        DropDownList2.DataSource = data.GetDataReader("select * from  DianPu where TypeName='" + DropDownList1.SelectedItem.Text + "'   ");
        DropDownList2.DataTextField = "Name";
        DropDownList2.DataValueField = "id";
        DropDownList2.DataBind();
    }
    private void BinderChanpin()
    {

        SqlDataReader dr;