分页以后GriView查询问题

用GridView 显示信息和分页，可以通过DropDownList查询后显示的信息分页会显示所有信息，想显示查询的信息必须重新点击查询按钮

查询后再点击分页，然后就会显示所有信息，想看第二页就需要再点查询

我点查询按钮只能查询当前页的信息

到第二页或其他页的时候还得按查询按钮

我想一次性把分页后的所有信息都查出来
protected void btnFind_Click(object sender, EventArgs e)
    {
        FenYeMethod();
    }
private void FenYeMethod()
    {
        string keyWord = this.txtKeyWord.Text;
        if ("".Equals(keyWord))
        {
            Response.Write("<script language=javascript>alert('关键字不能为空！');location='SendNote.aspx'</script>");
            return;
        }
        string type = this.dropClass.SelectedValue;

        this.GridView1.DataSource = SendManManager.LikeSelectSendManInfo(type, keyWord);
        this.GridView1.DataBind();
    }

public static IList<SendMan> LikeSelectSendManInfo(string type, string keyWord)
        {
            return sendManService.LikeSelectSendManInfo(type, keyWord);
        }
    }

public IList<SendMan> LikeSelectSendManInfo(string type, string keyWord)
        {
            if ("客户地址".Equals(type) && !("".Equals(keyWord)))
            {
                string sqlByID = "Select * From tb_SendMan Where ClientAddress Like '%" + keyWord + "%'";
                return Fun(sqlByID);
            }
            else if ("客户名称".Equals(type) && !("".Equals(keyWord)))
            {
                string sqlByClientName = "Select * From tb_SendMan Where ClientName Like '%" + keyWord + "%'";
                return Fun(sqlByClientName);
            }
            else if ("服务员工".Equals(type) && !("".Equals(keyWord)))
            {
                string sqlByServicePerson = "Select * From tb_SendMan Where ServicePerson Like '%" + keyWord + "%'";
                return Fun(sqlByServicePerson);
            }
            else
            {
                return null;
            }
        }

private IList<SendMan> Fun(string sql)
        {
            SqlDataReader reader = null;
            IList<SendMan> sendManList = new List<SendMan>();
            try
            {
                reader = DbHelper.ExecuteReader(sql);
                while (reader.Read())
                {
                    SendMan sendMan = new SendMan();

                    sendMan.ClientAddress = reader["ClientAddress"].ToString();
                    sendMan.ClientEmail = reader["ClientEmail"].ToString();
                    sendMan.ClientName = reader["ClientName"].ToString();
                    sendMan.NoticeContent = reader["NoticeContent"].ToString();
                    sendMan.EndTime = Convert.ToDateTime(reader["EndTime"].ToString());
                    sendMan.PhoneAbout = reader["PhoneAbout"].ToString();
                    sendMan.PostCode = reader["PostCode"].ToString();
                    sendMan.ServicePerson = reader["ServicePerson"].ToString();
                    sendMan.DepName = reader["DepName"].ToString();
                    sendMan.PlanTime = reader["PlanTime"].ToString();
                    sendMan.StartTime = Convert.ToDateTime(reader["StartTime"].ToString());
                    sendMan.ID = Convert.ToInt32(reader["ID"]);

                    sendManList.Add(sendMan);
                }
                reader.Close();
                reader.Dispose();
                return sendManList;
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message.ToString());
                reader.Close();
                reader.Dispose();
                return null;
            }
        }

从上到下依次调用

用PageIndexChanged方法可以办到吗？
protected void GridView1_PageIndexChanged(object sender, EventArgs e)
    {
       FenYeMethod();
    }
--------------------编程问答-------------------- 看前面的代码有点头晕,呵呵,看来自己还需要加倍努力啊,LZ的问题还真是千奇百怪.... --------------------编程问答-------------------- viewstate保存查询条件 --------------------编程问答-------------------- 直接搞个分页存储过程就ok了 --------------------编程问答-------------------- VIEWSTATE保存查询 --------------------编程问答-------------------- 楼主记得要加注释~~~ --------------------编程问答-------------------- 把查询变量定义成全局的。

补充：.NET技术 ,  ASP.NET