houtai/newslist.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 jiudian.houtai
{
    public partial class newslist : System.Web.UI.Page
    {
        static string connstr = System.Configuration.ConfigurationManager.AppSettings["ConnectionString"];//定义静态链接数据库参数
        SqlConnection Conn = new SqlConnection(connstr);//定义连接数据库连接对象conn
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                bind();
            }
        }
        //
        public void bind()
        {
            string sql = "select * from news order by news_id desc";
            SqlCommand cmd = new SqlCommand(sql, Conn);
            SqlDataAdapter da = new SqlDataAdapter();
            da.SelectCommand = cmd;
            DataSet ds = new DataSet();
            da.Fill(ds, "news");
            this.gv.DataSource = ds.Tables["news"].DefaultView;
            this.gv.DataBind();
        }

        protected void gv_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            int id = Convert.ToInt32(this.gv.DataKeys[e.RowIndex].Value.ToString());
            string sql = "delete from news where news_id=" + id;
            SqlCommand cmd = new SqlCommand(sql, Conn);
            Conn.Open();
            int result = cmd.ExecuteNonQuery();
            Conn.Close();
            Response.Write("<script>location='newslist.aspx'</script>");//弹出js对话窗口
        }

        protected void gv_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            this.gv.PageIndex = e.NewPageIndex;
            bind();
        }
        //
    }
}