在页面的装载事件中取得一个整型变量  tid,在LinkButton1每次的Click事件里都对tid加1，
LinkButton2的Click 事件里都对tid减1，该怎么做啊我每次单击LinkButton1时tid都为0啊。
而且ablename会为null.

大家看哈着代码该怎么写啊

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 content : System.Web.UI.Page
{  
    public int tid;
    public string tablename;
    public void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            tid = Request.QueryString["titleid"];
            tablename = Session["tablename"].ToString()
            String titleid ;
            titleid = tid;
            string sql = "select content from " + tablename + " where titleid=" + titleid.ToString();
            SqlConnection mycn = new SqlConnection();
            mycn.ConnectionString = "server=.;database=book;trusted_connection=yes";
            DataSet myds = new DataSet();
            SqlDataAdapter da = new SqlDataAdapter(sql, mycn);
            da.Fill(myds);
            DataList1.DataSource = myds;
            DataList1.DataBind();
            if (titleid <= 1)
            {
        LinkButton1.text="当前以是第一页";
                LinkButton1.Enabled  = false;
            }
        }
    }

    public void LinkButton1_Click(object sender, EventArgs e)
    {      
       
            tid=tid+1;
            String titleid ;

            titleid = tid;
            string sql = "select content from " + tablename + " where titleid=" + titleid.ToString();
            SqlConnection mycn = new SqlConnection();
            mycn.ConnectionString = "server=.;database=book;trusted_connection=yes";
            DataSet myds = new DataSet();
            SqlDataAdapter da = new SqlDataAdapter(sql, mycn);
            da.Fill(myds);
            DataList1.DataSource = myds;
            DataList1.DataBind();
    }
   
    protected void LinkButton2_Click(object sender, EventArgs e)
    {
            tid=tid-1;
            String titleid ;

            titleid = tid;
            string sql = "select content from " + tablename + " where titleid=" + titleid.ToString();
            SqlConnection mycn = new SqlConnection();
            mycn.ConnectionString = "server=.;database=book;trusted_connection=yes";
            DataSet myds = new DataSet();
            SqlDataAdapter da = new SqlDataAdapter(sql, mycn);
            da.Fill(myds);
            DataList1.DataSource = myds;
            DataList1.DataBind();
    }
}

[[it] 本帖最后由 浩天 于 2008-11-27 22:22 编辑 [/it]]

ViewState的用法和session 完全一样啊

什么意思哦  
把哪一个定义、为static