ASP.NET技巧：DataGrid传统分页方式_[Asp.Net教程]
此分页方式与传统ASP分页方式相仿.
DataGridPage.aspx
<%@ Page language="c#" Codebehind="DataGridPage.aspx.cs" AutoEventWireup="false" Inherits="netCRM.DataGridPage" %>
DataGridPage DataGridPage.aspx.cs
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace netCRM
{
///
/// DataGridPage 的摘要说明。
///
public class DataGridPage : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Literal Literal1;
protected System.Web.UI.WebControls.Literal Literal2;
protected System.Web.UI.WebControls.DataGrid DataGrid1;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
if(!IsPostBack)
{
BindGrid();
}
}
private void BindGrid()
{
string connstring = "Server=.;Database=NorthWind;User Id=sa;Password=;";
string sql="Select * from Orders";
SqlConnection conn = new SqlConnection(connstring);
conn.Open();
DataSet ds = new DataSet();
SqlDataAdapter sqlAdapter = new SqlDataAdapter(sql,conn);
sqlAdapter.Fill(ds,"users");
DataView dataview = new DataView();
dataview = ds.Tables[0].DefaultView;
DataGrid1.DataSource = ds.Tables[0].DefaultView;
DataGrid1.DataBind();
string cPage;
int pageSize = 10;
int currentPage;
int pageCount;
int numResults = 0;
if (Request.QueryString["page"]==null)
{
cPage="1";
}
else
{
cPage=Request.QueryString["page"].ToString();
}
try
{
currentPage = Int32.Parse(cPage);
}
catch
{
currentPage = 1;
}
numResults = 0;
int start = (int)((currentPage - 1) * pageSize);
int to = (int)(currentPage * pageSize);
if (start <= 0) start = 0;
numResults = dataview.Count;
int a1=0;
pageCount = Math.DivRem(numResults,pageSize,out a1);
if (a1>0)
{
pageCount++;
}
if(currentPage>pageCount || currentPage<=0)
{
currentPage = 1;
}
if(currentPage==pageCount)
{
to = dataview.Count;
}
// Create one DataTable with one column.
DataTable myTable = new DataTable("myTable");
myTable = dataview.Table.Clone();
//DataColumn colItem1 = new DataColumn("name",Type.GetType("System.String"));
//DataColumn colItem2 = new DataColumn("types",Type.GetType("System.String"));
//DataColumn colItem3 = new DataColumn("vendor",Type.GetType("System.String"));
//myTable.Columns.Add(colItem1);
//myTable.Columns.Add(colItem2);
//myTable.Columns.Add(colItem3);
//add row
DataRow NewRow;
for(int i=start;i {
if(i {
NewRow = myTable.NewRow();
for(int k=0;k {
NewRow[k] = dataview.Table.Rows[i][k];
}
myTable.Rows.Add(NewRow);
}
}
myTable.AcceptChanges();
DataView resultDataview = new DataView(myTable);
DataGrid1.DataSource = resultDataview;
DataGrid1.DataBind();
///
/// 生成页导航条。
///
string strNav = "";
int endpage;
if (currentPage>1)
{
strNav += "上一页 ";
}
if (currentPage>11)
{
strNav += "1 ...";
}
if(pageCount>currentPage+10)
{
endpage = currentPage+10;
}
else
{
endpage = pageCount;
}
for (int i=currentPage-10;i {
if(i>=1)
{
if (i==currentPage)
{
strNav +=""+ i.ToString() +" ";
}
else
{
strNav += ""+ i.ToString() +" ";
}
}
}
if((currentPage+10) {
strNav += "... "+ pageCount.ToString() +"";
}
if(currentPage {
strNav += " 下一页 ";
}
Literal1.Text = strNav;
Literal2.Text = "共 "+ numResults.ToString() +" 条供应信息，当前显示第 "+
(start+1).ToString() +" - "+ to.ToString() +" 条，共 "+ pageCount.ToString() +" 页";
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
///
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
///
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
}
}