delete_order.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 delete_order : System.Web.UI.Page
{
    string orderid;
    string id;

    protected void Page_Load(object sender, EventArgs e)
    {
        orderid = Request.QueryString["orderid"].ToString();
        id = Request.QueryString["id"].ToString();
        check_delete_ok();
    }
    /// <summary>
    /// 检查是否可以删除订单
    /// </summary>
    void check_delete_ok()
    {
        string strSql1 = "select top 1* from shipinfo where orderid='" + orderid + "'";
        string strConn1 = ConfigurationManager.ConnectionStrings["sq_chaletshopConnectionString"].ToString();
        SqlConnection conn1= new SqlConnection(strConn1);
        SqlCommand sqlcom1 = new SqlCommand(strSql1, conn1);
        conn1.Open();
        SqlDataReader reader = sqlcom1.ExecuteReader();
        if (reader.Read())
        {
            if (reader["status"].ToString() == "已发")
            {
                Response.Write("<script language='javascript'>alert('货物已发,不能删除!');</script>");
                Response.Write("<script language='javascript'>window.close();</script>");
            }
            if(reader["status"].ToString() == "未发")
            {
                delete_order2();
                Response.Write("<script language='javascript'>alert('订单删除成功!');</script>");
                Response.Write("<script language='javascript'>window.close();</script>");
            }
        }
        conn1.Close();
    }
    /// <summary>
    /// 删除订单
    /// </summary>
    void delete_order2()
    {
        //删除数据库里的数据
        string strSql = "delete from orderinfo where id='" + id + "'";
        string strConn = ConfigurationManager.ConnectionStrings["sq_chaletshopConnectionString"].ToString();
        SqlConnection conn = new SqlConnection(strConn);
        SqlCommand sqlcom = new SqlCommand(strSql, conn);