asp.net 自定义用户控件 触发事件

-----------------------用户控件---------------

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="pageNum.ascx.cs" Inherits="WebBookShop.UserControls.pageNum" %>
       <link href="Css/page_bottom_new.css" rel="stylesheet" type="text/css" />
     第
            <asp:Label ID="LabelNowPage" runat="server" Text="1"></asp:Label>
            页 共
            <asp:Label ID="LabelPageRow" runat="server" Text="1"></asp:Label>
            页&gt;
    <asp:Button ID="PageUp"  CssClass="anniu" runat="server" Text="上一页"
        onclick="PageUp_Click" />
    <asp:Button ID="PageDown" CssClass="anniu" runat="server" Text="下一页"
        onclick="PageDown_Click" />
&nbsp;
    <asp:TextBox ID="TexToPage"  CssClass="anniu" runat="server" Height="18px"
        Width="37px" ValidationGroup="ToPage"></asp:TextBox>
    <asp:Button ID="BtnToPage"  CssClass="anniu" runat="server" Text="跳转"
        onclick="BtnToPage_Click" ValidationGroup="ToPage" />
    <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
        ControlToValidate="TexToPage" ErrorMessage="RequiredFieldValidator"
        ForeColor="Red" ValidationGroup="ToPage">*</asp:RequiredFieldValidator>
    <asp:CompareValidator ID="CompareValidator1" runat="server"
        ControlToValidate="TexToPage" Display="Dynamic" ErrorMessage="CompareValidator"
        ForeColor="Red" Operator="DataTypeCheck" Type="Integer"
        ValidationGroup="ToPage">*</asp:CompareValidator>

------------------------------------前台代码调用

<%@ Register src="~/UserControls/pageNum.ascx" tagname="pageNum" tagprefix="uc1" %>

 <dt class="ipt2">&nbsp;
            <uc1:pageNum ID="pageNum1" runat="server"  OnPageDownClick="bindDate" OnPageUpClick="bindDate"  OnBtnToPageClick="bindDate"  />
        </dt>

-----------------------------------页面服务端代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using WebBookShop.Account;

namespace WebBookShop
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        int pageRow = 20;//页容量
        int pageNow = 1;
        string txtSearch = null;
        protected void Page_Load(object sender, EventArgs e)
        {
            if (Request.QueryString["txtSearch"] != null)
            {
                txtSearch=Request.QueryString["txtSearch"].ToString();
            }
            if (!Page.IsPostBack)
            {
                if (txtSearch != null)
                {
                    pageNow = Convert.ToInt32(this.pageNum1.pageNow);
                    this.Repeater1.DataSource = getdate(pageNow, pageRow, txtSearch);
                    this.Repeater1.DataBind();
                    this.getPageNum(txtSearch);
                }
            }
        
            //if (Page.PreviousPage!=null|| Page.IsPostBack)//获取向当页传输控件的页(当页的上一页)
            //{
            //    if (PreviousPage.IsPostBack)//判断是否回发提交过来的
            //    {
            //         txtSearch=((TextBox) Page.PreviousPage.Controls[0].FindControl("txtSearch")).Text; //获取母版页控件
            //        int pageNow = Convert.ToInt32(this.pageNum1.pageNow);
            //        int pageRow = 20;
            //        this.Repeater1.DataSource = getdate(pageNow,pageRow,txtSearch);
            //        this.Repeater1.DataBind();
            //    }
            //}
        }

*****************************************重点重点重点重点重点********************************************

        //触发事件的响应方法 绑定方法<uc1:pageNum ID="pageNum1" runat="server"  OnPageDownClick="bindDate"/>
        public void bindDate(object obj,EventArgs arg)
        {
            pageNow = Convert.ToInt32(this.pageNum1.pageNow);
            if (txtSearch != null)
            {
                pageNow = Convert.ToInt32(this.pageNum1.pageNow);
                this.Repeater1.DataSource = getdate(pageNow, pageRow, txtSearch);
                this.Repeater1.DataBind();
            }
        }

*********************************重点重点重点重点重点重点重点重*********************************************

        /// <summary>
        /// 获取指定分页的按关键字搜索的数据
        /// </summary>
        /// <param name="pageNow"></param>
        /// <param name="pageRow"></param>
        /// <param name="txtSearch">关键字</param>
        /// <returns></returns>
        public List<Model.Book> getdate(int pageNow, int pageRow, string txtSearch)
        {
            int pageMin = (pageNow - 1) * pageRow + 1;
            int pageMax = pageRow * pageNow;
            string order = "Id";
            if (Session["order"] != null)//排序规则
            {
                order = Session["order"].ToString();
            }
            List<Model.Book> booksModule = (List<Model.Book>)new BLL.BookBLL().GetPagedData(pageMin, pageMax, txtSearch, order);

            return booksModule;
        }
        /// <summary>
        /// 获得页数
        /// </summary>
        /// <param name="likeStr">搜索关键字</param>
        /// <returns></returns>
        public void getPageNum(string likeStr)
        {
            double temnum = new BLL.BookBLL().GetTotalCount(likeStr) / (double)pageRow;
            string num= Math.Ceiling((decimal)temnum).ToString();
            this.pageNum1.pageRowNum = num;
        }
        /// <summary>
        /// 获得出版社名字
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public string getCbsName(int id)
        {
            return new BLL.PublisherBLL().GetById(id).Name;
        }
    }
}

 --------------------自定义用户控件服务端代码

namespace WebBookShop.UserControls
{
    public partial class pageNum : System.Web.UI.UserControl
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            conEnalbe();       
        }

*************************************************************

        public event EventHandler PageDownClick = null;//注册事件
        public event EventHandler PageUpClick = null;//注册事件
        public event EventHandler BtnToPageClick = null;//注册事件
        protected void PageDown_Click(object sender, EventArgs e)
        {
           
            this.LabelNowPage.Text = (Convert.ToInt32(this.LabelNowPage.Text) + 1).ToString();
            this.TexToPage.Text = this.LabelNowPage.Text;
            conEnalbe();
            if (PageDownClick != null)//当事件不为空
            {
                PageDownClick(this, null);//触发事件
            }
        }
      ********************************************************************
        protected void PageUp_Click(object sender, EventArgs e)
        {
            this.LabelNowPage.Text = (Convert.ToInt32(this.LabelNowPage.Text) - 1).ToString();
            this.TexToPage.Text = this.LabelNowPage.Text;
            conEnalbe();
            if (PageUpClick != null)
            {
                PageUpClick(this, null);
            }
        }

        protected void BtnToPage_Click(object sender, EventArgs e)
        {
            this.LabelNowPage.Text = this.TexToPage.Text;
            conEnalbe();
            if (BtnToPageClick != null)
            {
                BtnToPageClick(this, null);
            }
           
        }

        protected void conEnalbe()//改变上一页下一页控件状态
        {
            if (Convert.ToInt32(LabelNowPage.Text) <= 1)
            {
                this.PageUp.Enabled = false;
            }
            else
            {
                this.PageUp.Enabled = true;
            }
            if (Convert.ToInt32(LabelNowPage.Text) >= Convert.ToInt32(LabelPageRow.Text))
            {
                this.PageDown.Enabled = false;
            }
            else
            {
                this.PageDown.Enabled = true;
            }
        }
        /// <summary>
        /// 当前页
        /// </summary>
        public string pageNow
        {
            get { return this.LabelNowPage.Text; }
            set { this.LabelNowPage.Text = value; }
        }
        /// <summary>
        /// 页数
        /// </summary>
        public string pageRowNum
        {
            get { return this.LabelPageRow.Text; }
            set { this.LabelPageRow.Text = value; }
        }
        /// <summary>
        /// 跳转到*页
        /// </summary>
        public string GoPage
        {
            get { return this.TexToPage.Text; }
            set { this.TexToPage.Text = value; }
        }
    }
}