Admin/AddKucun.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_AddKucun : System.Web.UI.Page
{
    SqlHelper data = new SqlHelper();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DropDownList1.DataSource = data.GetDataReader("select * from  yaopin  ");
            DropDownList1.DataTextField = "name";
            DropDownList1.DataValueField = "id";
            DropDownList1.DataBind();
        }
    }
    protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        SqlDataReader dr = data.GetDataReader("select  *  from  yaopin where  id='" + DropDownList1.SelectedValue + "'    ");
        if (dr.Read())
        {
            TextBox2.Text = dr["KuCun"].ToString();

        }

    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        data.RunSql("update   yaopin set KuCun=KuCun+'" + txtdanjia.Text + "'  where id=" + DropDownList1.SelectedValue);


        Alert.AlertAndRedirect("操作成功！", "yaopin.aspx");

    }
}