ShowInfo.aspx.cs

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using System;
using System.Data;
using System.Data.SqlClient;
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 MemberManage_ShowInfo : System.Web.UI.Page
{
    SqlOperate sqloperate = new SqlOperate();
    SqlHelper data = new SqlHelper();
    SqlConnection sqlconn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);
    string strGTypeID;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            sqlconn.Open();
            string strid = Page.Request.QueryString["GoodsID"];
            string sqlstr = "select * from vb_GoodsInfo where GoodsID='" + strid + "'";
            SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlconn);
            DataSet myds = new DataSet();
            myda.Fill(myds, "vb_GoodsInfo");
            DataRowView mydrv = myds.Tables["vb_GoodsInfo"].DefaultView[0];
            txtGID.Text = Convert.ToString(mydrv.Row["GoodsID"]);
            txtGName.Text = Convert.ToString(mydrv.Row["GoodsName"]);
            txtGType.Text = Convert.ToString(mydrv.Row["GoodsTypeName"]);
                 txtGPrice.Text = Convert.ToString(mydrv.Row["GoodsPrice"]);
           
            txtGIntro.Text = Convert.ToString(mydrv.Row["GoodsIntroduce"]) + "…";
            iGPhoto.ImageUrl = "uploads/" + Convert.ToString(mydrv.Row["GoodsPhoto"]);
            strGTypeID = Convert.ToString(mydrv.Row["GoodsTypeID"]);
            GoodsNum.Text = Convert.ToString(mydrv.Row["GoodsNum"]);


        }
    }
    protected void btnShop_Click(object sender, EventArgs e)
    {
        string Orderid;

        if (float.Parse(GoodsNum.Text) < float.Parse(TextBox1.Text))
        {
            Label1.Text = "库存数量不足";

        }
        else
        {

            if (Session["MName"] == null)
            {
                Response.Write("<script>alert('您还没有登录，请登录后再购买，谢谢合作！');location='javascript:history.go(-1)';</script>");
            }
            else
            {
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