• ASP.NET: PagedDataSource


    图,
     

    代码
    1,前台
     <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %>
    
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <title></title>
    </head>
    <body>
        <form id="form1" runat="server">
        <div>
        <h1>PagedDataSource对象的应用 ylb, tech 2012/6/14</h1>
            <asp:GridView ID="gvwList" runat="server" Width="838px">
            </asp:GridView>
            <asp:PlaceHolder ID="phPageBar" runat="server">
            <table width="850">
                <tr>
                    <td>
                        &nbsp;&nbsp; 共找到<asp:Label ID="lblCount" runat="server" Text="100"></asp:Label>记录,当前第<asp:Label
                            ID="lblCurrent" runat="server" Text="1"></asp:Label>&nbsp;
                    </td>
                    <td><asp:TextBox ID="txtJump" runat="server" Width="20" Text="1"></asp:TextBox>
                        <asp:RangeValidator ID="rvTxtJump" runat="server" ErrorMessage="页码有误" ForeColor="Red"
                            ControlToValidate="txtJump" Display="Dynamic" MinimumValue="1" Type="Integer"></asp:RangeValidator>
                        /共<asp:Label ID="lblPageSum" runat="server" Text="9"></asp:Label><asp:Button ID="btnJump" runat="server" Text="跳转" OnClick="btnJump_Click" />
                        &nbsp;<asp:Button ID="btnFirstPage" runat="server" Text="首页" OnClick="btnFirstPage_Click" />
                        &nbsp;<asp:Button ID="btnCurrentPage" runat="server" Text="上一页" OnClick="btnCurrentPage_Click" />
                        &nbsp;<asp:Button ID="btnNextPage" runat="server" Text="下一页" OnClick="btnNextPage_Click" />
                        &nbsp;<asp:Button ID="btnEndPage" runat="server" Text="尾页" OnClick="btnEndPage_Click" />
                        &nbsp;<asp:DropDownList ID="dropPageSize" runat="server" Width="40" AutoPostBack="True"
                            OnSelectedIndexChanged="dropPageSize_SelectedIndexChanged">
                            <asp:ListItem>20</asp:ListItem>
                            <asp:ListItem>50</asp:ListItem>
                        </asp:DropDownList>
                    </td>
                </tr>
                <tr>
                    <td>
                        &nbsp
                    </td>
                </tr>
            </table>
            </asp:PlaceHolder>
           
        </div>
        </form>
    </body>
    </html>
    2,后台
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    
    public partial class Default3 : System.Web.UI.Page
    {
        private void BindShow(int currentpage,int pagesize)
        {
            //分页对象
            PagedDataSource pd = new PagedDataSource();
            pd.DataSource = TaoTaoOper.GetAll();   //1,把集合对象写这儿
    
            #region 分页对象的配置
            lblCount.Text = pd.Count.ToString();    //总记录数
            pd.AllowPaging = true;
            pd.PageSize = pagesize;                 //分页大小
            lblPageSum.Text = pd.PageCount.ToString();      //总页数
            pd.CurrentPageIndex = currentpage - 1;  //设置页码索引
            txtJump.Text = currentpage.ToString();  //当前页
            lblCurrent.Text = currentpage.ToString(); //当前页码
            #endregion
    
            #region 传统分页
            //首页
            if (currentpage > 1)
                btnFirstPage.Enabled = true;
            else
                btnFirstPage.Enabled = false;
    
            //上一页
            if (currentpage > 1)
                btnCurrentPage.Enabled = true;
            else
                btnCurrentPage.Enabled = false;
    
            //下一页
            if (currentpage < pd.PageCount)
                btnNextPage.Enabled = true;
            else
                btnNextPage.Enabled = false;
            //尾页
            if (currentpage < pd.PageCount)
                btnEndPage.Enabled = true;
            else
                btnEndPage.Enabled = false;
            #endregion
            rvTxtJump.MaximumValue = pd.PageCount.ToString(); //跳转页码验证
    
            //2,GridView控件邦定
            gvwList.DataSource = pd;
            gvwList.DataBind();
        }
      
        #region 分页相关事件
        protected void dropPageSize_SelectedIndexChanged(object sender, EventArgs e)
        {
            int pagesize = Convert.ToInt32(dropPageSize.SelectedValue); //分页大小
            int currentpage = 1;                                        //当前页码 重新加载分页邦定
    
            //调用方法
            BindShow(currentpage, pagesize);
        }
        protected void btnJump_Click(object sender, EventArgs e)
        {
            //跳转页码
            int currentpage =Convert.ToInt32( txtJump.Text);
            int pagesize = Convert.ToInt32(dropPageSize.SelectedValue); //分页大小
    
            //分页大小改变
            BindShow(currentpage, pagesize);
        }
        protected void btnFirstPage_Click(object sender, EventArgs e)
        {
            int pagesize = Convert.ToInt32(dropPageSize.SelectedValue); //分页大小
            //调用方法
            BindShow(1, pagesize);
        }
        protected void btnCurrentPage_Click(object sender, EventArgs e)
        {
            int pagesize = Convert.ToInt32(dropPageSize.SelectedValue); //分页大小
            int currentpage = Convert.ToInt32(txtJump.Text.Trim())-1;
            //调用方法
            BindShow(currentpage, pagesize);
        }
        protected void btnNextPage_Click(object sender, EventArgs e)
        {
            int pagesize = Convert.ToInt32(dropPageSize.SelectedValue); //分页大小
            int currentpage = Convert.ToInt32(txtJump.Text.Trim()) + 1;
            //调用方法
            BindShow(currentpage, pagesize);
        }
        protected void btnEndPage_Click(object sender, EventArgs e)
        {
            int pagesize = Convert.ToInt32(dropPageSize.SelectedValue); //分页大小
            int pageCount = Convert.ToInt32(lblPageSum.Text);
            //调用方法
            BindShow(pageCount, pagesize);
        }
        #endregion
    
    
        protected void Page_Load(object sender, EventArgs e)
        {
            #region 分页,Page_Load加载调用
            if (!IsPostBack)
            {
                int pagesize = Convert.ToInt32(dropPageSize.SelectedValue); //分页大小
                int currentpage = 1;//pd.CurrentPageIndex + 1;                  //当前页码
    
                //调用方法
                BindShow(currentpage, pagesize);
            }
            #endregion
    
        }
    
    }
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  • 原文地址:https://www.cnblogs.com/ylbtech/p/2553676.html
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