index.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 index : System.Web.UI.Page
    {
        SQLHelper db = new SQLHelper();
        protected void Page_Load(object sender, EventArgs e)
        {
            if(!IsPostBack)
            {
                string sql = "select top 6 * from product order by pro_id desc";
                DataTable dt = db.ExecuteQuery(sql, CommandType.Text);
                this.dt_product.DataSource = dt;
                this.dt_product.DataBind();
            }
        }
        //
        //截取字符串
        public string str_len(string str, int len)
        {
            int len1 = str.ToString().Length;

            if (len1 >= len)
            {
                str = str.Substring(0, len);
            }

            return str;

        }
        //
        //
    }
}