qx.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
namespace 电子商务
{
    public partial class qx : System.Web.UI.Page
    {
        SQLHelper db = new SQLHelper();
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                int id = int.Parse(Request.QueryString["id"].ToString());
                //取得订单状态
                string query = "select * from orders where order_id=" + id;
                DataTable dt = db.ExecuteQuery(query, CommandType.Text);
                if (dt.Rows[0]["order_state"].ToString() == "已发货" || dt.Rows[0]["order_state"].ToString() == "交易完成")
                {
                    Response.Write("<script>alert('订单处于发货状态或者交易完成状态不能取消订单');location='javascript:history.go(-1)';</script>");
                }
                else
                {
                    string sql = "update orders set order_state='订单取消' where order_id=" + id;
                    db.ExecuteNonQuery(sql, CommandType.Text);
                    Response.Write("<script>alert('订单取消成功！');location='myorder.aspx'</script>");
                }
                //

            }
        }
    }
}