c#分页代码
本来不想写这个的，呵呵。但是感觉看到了，还是留一下吧，没事看看可以拓展下思路。
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView runat="server" ID="Grid1"></asp:GridView>
<br />
<asp:LinkButton ID="btn1" runat="server" CommandName="aa" OnCommand="btnOK">[首 页]</asp:LinkButton>
<asp:LinkButton ID="btn2" runat="server" CommandName="bb" OnCommand="btnOK">[上一页]</asp:LinkButton>
<asp:LinkButton ID="btn3" runat="server" CommandName="cc" OnCommand="btnOK">[下一页]</asp:LinkButton>
<asp:LinkButton ID="btn4" runat="server" CommandName="dd" OnCommand="btnOK">[末 页]</asp:LinkButton>
</div>
</form>
</body>
</html>
C#
static int pageIndex = 1;//当前的页面
static int pages = 0; //总页数
static int pageSize = 10;//当前页的数据条数
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
SelectCount();
Grid();
}
}
protected string conString = "server=.;database=DB;uid=sa;pwd=sa2010";
//计算出总行数和总页数
protected void SelectCount()
{
int count = 0;
using (SqlConnection con = new SqlConnection(conString))
{
con.Open();
using (SqlCommand cmd = con.CreateCommand())
{
cmd.CommandText = "select count(*) from Test";
count = (int)cmd.ExecuteScalar();
}
}
//计算总页数
if (count % pageSize == 0)
{
pages = count / pageSize;
}
else
{
pages = (count / pageSize) + 1;
}
}
protected void Grid()
{
int start = (pageIndex - 1) * pageSize;
SqlConnection cod = new SqlConnection(conString);
string sql = "select * from Test";
SqlDataAdapter da = new SqlDataAdapter(sql,cod);
DataSet ds = new DataSet();
da.Fill(ds, start, pageSize, "Test");
Grid1.DataSource = ds;
Grid1.DataBind();
}
protected void btnOK(object o, CommandEventArgs e)
{
switch (e.CommandName)
{
case "aa":
pageIndex = 1;
Grid();
break;
case "bb":
if (pageIndex > 1)
{
pageIndex--;
Grid();
}
break;
case "cc":
if (pageIndex < pages)
{
pageIndex++;
Grid();
}
break;
case "dd":
pageIndex = pages;
Grid();
break;
}
}
下边是我改写的哈，没测试效率，有朋友有时间可以测试下。
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Index.aspx.cs" Inherits="Index" %>
<!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>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div style="text-align:center;">
<asp:LinkButton ID="btn2" runat="server" CommandName="bb" OnCommand="btnOK">[上一页]</asp:LinkButton>
<asp:LinkButton ID="btn3" runat="server" CommandName="cc" OnCommand="btnOK">[下一页]</asp:LinkButton>
<table border="1" cellpadding="0" cellspacing="0">
<asp:Repeater ID="News" runat="server">
<ItemTemplate>
<tr>
<td>
<%# DataBinder.Eval(Container.DataItem,"newsid") %>
</td>
<td>
<%# DataBinder.Eval(Container.DataItem,"newsname") %>
</td>
<td>
<%# DataBinder.Eval(Container.DataItem,"adddate") %>
</td>
<td>
<%# DataBinder.Eval(Container.DataItem,"addname") %>
</td>
<td>
<%# DataBinder.Eval(Container.DataItem,"viewnum") %>
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
<asp:HiddenField ID="Start" runat="server" />
<asp:HiddenField ID="End" runat="server" />
</table>
</div>
</form>
</body>
</html>
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 Conn;
using System.Data.OleDb;
public partial class Index : System.Web.UI.Page
{
public int NewsNumber = 0;
public int StartID = 0;
public int EndID = 0;
public int PageCount = 100;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindNews(StartID, PageCount);
}
}
public int NewsCount()
{
int NewsNumber = 0;
object ob;
ob = SqlConn.GetSingle("Select Count(*) from News");
NewsNumber = Convert.ToInt32(ob);
return NewsNumber;
}
public void BindNews(int StartID, int PageCount)
{
DataSet Ds = new DataSet();
if (StartID == 0)
{
Ds = SqlConn.Query("Select Top " + PageCount + " * From News Order by NewsID desc");
}
else
{
Ds = SqlConn.Query("Select Top " + PageCount + " * From News Where NewsID < " + StartID + " Order by NewsID Desc");
}
StartID = Convert.ToInt32(Ds.Tables[0].Rows[Ds.Tables[0].Rows.Count - 1]["NewsID"]);
EndID = Convert.ToInt32(Ds.Tables[0].Rows[0]["NewsID"]);
this.Start.Value = StartID.ToString();
this.End.Value = EndID.ToString();
this.News.DataSource = Ds;
this.News.DataBind();
}
protected void btnOK(object o, CommandEventArgs e)
{
switch (e.CommandName)
{
case "bb":
BindNews(Convert.ToInt32(this.End.Value), PageCount);
break;
case "cc":
BindNews(Convert.ToInt32(this.Start.Value), PageCount);
break;
}
}
}
