GridView自定义分页

思路是GridView中相应功能进行重写，并重新封装成新控件。

一、新建类工程

SmartGridView.cs

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Collections;
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.IO;
using System.ComponentModel;
namespace MIDI.CustmerControl
{
    [ToolboxData(@"<{0}:CustGrid2 runat='server'></{0}:CustGrid2>")]  //必须和类名相同
    public class CustGrid2 : GridView
    {
        protected override void OnRowCreated(GridViewRowEventArgs e)
        {
            //判断是否是分页行且允许分页(AllowPaging属性)
            if (e.Row.RowType == DataControlRowType.Pager && this.AllowPaging)
            {
                //定义四个按扭表示"上一页","下一页","首页","尾页"
                LinkButton First = new LinkButton();
                LinkButton Prev = new LinkButton();
                LinkButton Next = new LinkButton();
                LinkButton Last = new LinkButton();

                //新建一行作为分页行
                TableCell tc = new TableCell();

                //分页行所跨列(具体视GridView列数来定,这里表示有3列数据)
                tc.ColumnSpan = 2;

                //清除分页行里的控件
                e.Row.Controls.Clear();

                //为自定义的按扭定义为GridView分页按扭
                First.Text = PagerSettings.FirstPageText;
                Prev.Text = PagerSettings.PreviousPageText;
                Next.Text = PagerSettings.NextPageText;
                Last.Text = PagerSettings.LastPageText;
                First.CommandName = Prev.CommandName = Next.CommandName = Last.CommandName = "page";
                First.CommandArgument = "first";
                Prev.CommandArgument = "prev";
                Next.CommandArgument = "next";
                Last.CommandArgument = "last";

                //当前页是第一页,则"上一页"按扭设为无效
                if (this.PageIndex <= 0)
                {
                    First.Enabled = Prev.Enabled = false;
                }
                else
                {
                    First.Enabled = Prev.Enabled = true;
                }

                //当前页是尾页,则"下一页"按扭设为无效
                if (this.PageIndex >= PageCount - 1)
                {
                    Next.Enabled = Last.Enabled = false;
                }
                else
                {
                    Next.Enabled = Last.Enabled = true;
                }
                tc.RowSpan = this.Columns.Count;
                //将以上两个分页按扭添加到分页行内
                tc.Controls.Add(First);
                tc.Controls.Add(new LiteralControl("&nbsp;&nbsp;"));
                tc.Controls.Add(Prev);
                tc.Controls.Add(new LiteralControl("&nbsp;&nbsp;"));
                tc.Controls.Add(Next);
                tc.Controls.Add(new LiteralControl("&nbsp;&nbsp;"));
                tc.Controls.Add(Last);
                tc.RowSpan = this.Columns.Count;
                AddNumberList(tc);
                e.Row.Controls.Add(tc);
                //base.OnRowCreated(e);
                
            }
        }

        private void AddNumberList(TableCell tc)
        {
            for (int i = 0; i < PageCount; i++)
            {
                //如果是当前页,则用红色标识,且不可用
                if (i == PageIndex)
                {
                    tc.Controls.Add(new LiteralControl("<span style='color:red;font-weight:bold'>" + (i + 1).ToString() + "</span>"));
                }
                else
                {
                    //自定义LinkButton,并将其设置为GridView数字分页按扭
                    LinkButton lb = new LinkButton();
                    lb.Text = (i + 1).ToString();
                    lb.CommandName = "Page";
                    lb.CommandArgument = (i + 1).ToString();
                    tc.Controls.Add(lb);
                }

            }
            tc.Controls.Add(new LiteralControl("&nbsp;&nbsp;"));
        }

    }

 

编译后，在工具箱里，添加该工具Dll 出现自定义GridView图标。

测试.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Grid自定义分页.aspx.cs" Inherits="DivMenusTest" %>
<%@ Register Assembly="UIClasLibrary" Namespace="MIDI.CustmerControl" TagPrefix="cc2" %>
<!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 id="Head1" runat="server">
<title>SmartGridView测试</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="Select" TypeName="ObjData"></asp:ObjectDataSource>
<cc2:SmartGridView ID="SmartGridView1" runat="server" AllowPaging="True" AllowSorting="True"
 AutoGenerateColumns="False" PagingStyle="Default" DataSourceID="ObjectDataSource1">
<Columns>
<asp:BoundField DataField="no" HeaderText="序号" SortExpression="no" >
    <itemstyle width="100px" />
</asp:BoundField>
<asp:BoundField DataField="name" HeaderText="名称" SortExpression="name" >
    <itemstyle width="100px" />
</asp:BoundField>
</Columns>
        <PagerSettings PageButtonCount="5" />
    </cc2:SmartGridView>
</div>
</form>
</body>
</html

 

ObjectDataSoure数据源

.cs

using System;
using System.Data;
using System.Configuration;
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.ComponentModel;
/**/
/// <summary>
/// ObjData 的摘要说明
/// </summary>
public class ObjData
{
    public ObjData()
    {
        //
        // TODO: 在此处添加构造函数逻辑
        //
    }
    [DataObjectMethod(DataObjectMethodType.Select, true)]
    public DataTable Select()
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("no", typeof(string));
        dt.Columns.Add("name", typeof(string));
        for (int i = 0; i < 60; i++)
        {
            DataRow dr = dt.NewRow();
            dr[0] = "no" + i.ToString().PadLeft(2, '0');
            dr[1] = "name" + i.ToString().PadLeft(2, '0');
            dt.Rows.Add(dr);
        }
        return dt;
    }