Admin/ModifySmallType.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_ModifySmallType : System.Web.UI.Page
{
    SqlHelper data = new SqlHelper();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            DropDownList1.DataSource = data.GetDataReader("select * from GoodsBigType");
            DropDownList1.DataTextField = "GoodsTypeName";
            DropDownList1.DataValueField = "GoodsTypeID";
            DropDownList1.DataBind();
            int id = int.Parse(Request.QueryString["id"].ToString());
            SqlDataReader dr = data.GetDataReader("select * from GoodsSamllType where id=" + id);
            dr.Read();
            Name.Text = dr["Name"].ToString();
            DropDownList1.Items[0].Value = dr["BigId"].ToString();

            DropDownList1.Items[0].Text = dr["BigName"].ToString();

        }
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        int id = int.Parse(Request.QueryString["id"].ToString());
        SqlHelper update = new SqlHelper();

        update.RunSql("update  GoodsSamllType set Name='" + Name.Text + "', BigId='" + DropDownList1.SelectedValue + "', BigName='"+DropDownList1.SelectedItem.Text+"' where id=" + id);

        Alert.AlertAndRedirect("修改成功", "GoodsSmallTypeManger.aspx");
    }
}