buy.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;

public partial class buy : System.Web.UI.Page
{
    #region 初始化
    protected string con = CommonLib.SqlHelper.SqlConnectionString;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            #region 判断参数
            if (Request["cls"] != null)
            {
                try
                {
                    int cls = Convert.ToInt32(Request.QueryString["cls"]);
                    if (cls < 1 || cls > 3)
                    {
                        Response.Redirect("buy.aspx?cls=1");
                        return;
                    }
                    #region 绑定左侧导航
                    Bind(cls);
                    #endregion
                }
                catch
                {
                    Response.Redirect("buy.aspx?cls=1");
                }
            }
            else if (Request["t"] != null)
            {
                try
                {
                    int t = Convert.ToInt32(Request.QueryString["t"]);
                    string sql = "select pro_cls_pid from pro_cls where pro_cls_id=" + t;
                    int cls = Convert.ToInt32(CommonLib.SqlHelper.ExecuteScalar(con, CommandType.Text, sql, null));
                    Bind(cls);
                    sql = "select pro_cls_name from pro_cls where pro_cls_id=" + t;
                    string name = CommonLib.SqlHelper.ExecuteScalar(con, CommandType.Text, sql, null).ToString();
                    HyperLink1.Text += "&nbsp;&gt;&nbsp;";
                    HyperLink2.Text = name;
                    HyperLink2.NavigateUrl = "buy.aspx?t=" + t;
                }
                catch
                {
                    Response.Redirect("buy.aspx");
                }
            }
            else
            {