DataGrid1.Attributes.Add("onclick","window.open('Print_GoodsMove.aspx?GoodsMove_ID=" + Apply_ID + "','newwindow', 'height=600, width=745, top=100, left=100, toolbar=no, menubar=no, scrollbars=no, resizable=no,location=no, status=no');"); SelectMultiPages.aspx
<%@ Page EnableViewState="true" CodeBehind="SelectMultiPages.aspx.cs" Language="c#" 
AutoEventWireup="false" Inherits="eMeng.Exam.SelectMultiPages" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD><title>跨页面实现多选</title><META http-equiv="content-type" content="text/html; charset=gb2312"><style>
* {FONT-SIZE:12PX}#Status {text-align:left}</style><script language="JAVASCRIPT">function AddRemoveValues(oChk) { 
//在处理这个地方需要注意的是：你保存的值应该具有唯一性，这样才能不会替换错误的项。if(oChk.checked)SelectMultiPage.HdnSelectedValues.value += "," + oChk.value; elseSelectMultiPage.HdnSelectedValues.value = SelectMultiPage.HdnSelectedValues.value.replace("," + oChk.value,""); }</script></HEAD><BODY><form id="SelectMultiPage" runat="server"><asp:datagrid id="DataGrid1" HorizontalAlign="Center" AutoGenerateColumns="False" Width="600px" AllowPaging="True" runat="server"> <AlternatingItemStyle BackColor="#EEEEEE"></AlternatingItemStyle> <HeaderStyle BackColor="#AAAADD" Font-Bold="True" HorizontalAlign="Center"></HeaderStyle> <PagerStyle HorizontalAlign="Right" Mode="NumericPages" Visible="True"></PagerStyle> <Columns> <asp:TemplateColumn HeaderText="选择"> <ItemTemplate> <input type="checkbox" runat="server" id="chkSelect" onclick="AddRemoveValues(this)" value='<%#DataBinder.Eval(Container.DataItem,"Title")%>'/> </ItemTemplate> </asp:TemplateColumn> <asp:TemplateColumn HeaderText="文章标题"> <ItemTemplate> <asp:Literal Text='<%# DataBinder.Eval(Container.DataItem, "Title") %>' runat="server" ID="TitleShow"/> </ItemTemplate> </asp:TemplateColumn> <asp:TemplateColumn HeaderText="发布时间"> <ItemTemplate> <asp:Literal Text='<%# DataBinder.Eval(Container.DataItem, "CreateDate").ToString() %>' runat="server"/> </ItemTemplate> </asp:TemplateColumn> </Columns></asp:datagrid><div align=center><asp:button id="Button1" runat="server" Text="得到所选的值"></asp:button><div id="Status"><asp:label id="Label1" runat="server"></asp:label></div><INPUT id="HdnSelectedValues" type="hidden" name="HdnSelectedValues" runat="server"></div></form></BODY></HTML>SelectMultiPages.aspx.csusing System;using System.Collections;using System.ComponentModel;using System.Data;using System.Data.OleDb;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 eMeng.Exam{/// <summary>/// SelectMultiPages 的摘要说明。
/// </summary>public class SelectMultiPages : System.Web.UI.Page{protected System.Web.UI.WebControls.Button Button1;protected System.Web.UI.WebControls.Label Label1;protected System.Web.UI.HtmlControls.HtmlInputHidden HdnSelectedValues;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(!Page.IsPostBack) BindData();}private void DataGrid1_PageIndexChanged(object source, DataGridPageChangedEventArgs e){ DataGrid1.CurrentPageIndex = e.NewPageIndex; BindData(); }void BindData(){ OleDbConnection cn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + HttpContext.Current.Server.MapPath("aspx.mdb")); OleDbDataAdapter da = new OleDbDataAdapter("Select Title, CreateDate from Document",cn); DataSet ds = new DataSet(); da.Fill(ds); DataGrid1.DataSource= ds; DataGrid1.DataBind();}private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e){ //重新显示所选择的项目 if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) { if(HdnSelectedValues.Value.IndexOf(((Literal)e.Item.Cells[1].FindControl("TitleShow")).Text) >= 0 ) { HtmlInputCheckBox ChkSelected = (HtmlInputCheckBox)(e.Item.Cells[0].FindControl("ChkSelect")); ChkSelected.Checked = true; } }}private void Button1_Click(object sender, System.EventArgs e){ //为了显示的方便进行替换的 Label1.Text = HdnSelectedValues.Value.Replace(",","<li>");}
Web 窗体设计器生成的代码 }}我们用Northwind数据库做例子：html页面的DataGrid如下所示：<asp:datagrid id="grdTest" runat="server" Height="228px" Width="262px" AutoGenerateColumns="False" AllowPaging="True"> <Columns> <asp:TemplateColumn> <ItemTemplate><!-- 这里是关键--> <SPAN> <%# Container.ItemIndex+1 %></SPAN> </ItemTemplate> </asp:TemplateColumn> <asp:BoundColumn DataField="CategoryName"></asp:BoundColumn> <asp:BoundColumn DataField="Description"></asp:BoundColumn> </Columns> </asp:datagrid>下面我们可以写他的后台代码cs的文件了我们在它的Page_Load里面添加绑定方法如下所示：private void Page_Load(object sender, System.EventArgs e) { // 在此处放置用户代码以初始化页面 strConnection = ConfigurationSettings.AppSettings["sa"].ToString(); myConnection = new SqlConnection(strConnection); SqlDataAdapter myAdapter = new SqlDataAdapter("SELECT CategoryName, Description FROM Categories",myConnection);// 为了分页方便ds是一个全局的变量 myAdapter.Fill(ds); this.grdTest.DataSource = ds.Tables[0].DefaultView; this.grdTest.DataBind();}从上面的过程可以看出我们使用的是表Categories，这样我们就可以产生一列自增长的列，此列是从1开始的。如果我们想要一个从0开始的列有该怎么办呢？我们可以把<!-- 这里是关键-->下面的<span>里面的东西换成<asp:Label id=lblRowNumber runat="server" Text='<%# DataBinder.Eval(Container, "ItemIndex", "{0}") %>'>就可以了。如果我们想要实现分页也显示的方法我们将使用DataTable的方法来实现，首先我们将DataGrid的列全部变成绑定列（为了方便演示，不是必须）。如下所示：<asp:table id="tbData" runat="server" BackColor="LightSteelBlue" Height="13px" Width="16px" Font-Names="宋体" Font-Name="宋体" Font-Size="8pt" CellPadding="1" CellSpacing="0" BorderColor="black" BorderWidth="1" Gridlines="Both"></asp:table><br/> <asp:datagrid id="grdTest" runat="server" Height="228px" Width="262px" AutoGenerateColumns="False" PageSize="2" AllowPaging="True"> <Columns> <asp:BoundColumn DataField="RowNumber" HeaderText="RowNumber"></asp:BoundColumn> <asp:BoundColumn DataField="CategoryName"></asp:BoundColumn> <asp:BoundColumn DataField="Description"></asp:BoundColumn> </Columns> </asp:datagrid>在后台我们添加一个函数：private DataTable GetRowNumberTable(DataTable dt){ DataColumn col = new DataColumn("RowNumber",Type.GetType("System.Int32")); dt.Columns.Add(col); for(int i = 0;i<=dt.Rows.Count-1;i++){ if(0 == i) dt.Rows[i][col] = 1; else dt.Rows[i][col] = Convert.ToInt32(dt.Rows[i-1][col]) +1; } return dt; }然后我们将原来数据源改成如下：this.grdTest.DataSource = this.GetRowNumberTable(ds.Tables[0]).DefaultView;这样一来即使分页，数字也是连续的，并且将编号应用于所有的行而不是当前这一页的行。 在查询大数据量时，窗体界面会不动，“正在查询
”的提示也不能显示。所以打算用多线程来实现，可是当在线程里面执行到 this.dataGridDF.DataSource=dt.DefaultView;填充数据时却提示报错，说什么该线程不能调用主线程创建的控件等等。后来查了许多资料，终于搞定。可以在查询数据库时操作别的了，“正在查询”的提示也显示了。 //或者在前面用一个线程查询，在线程里调用dataGrid.BeginInvoke(异步方法)来单独填充 public delegate void myDelegate(); DataTable dt; private void btnDianJia_Click(object sender, System.EventArgs e) { try { mythread = new Thread(new ThreadStart(ThreadWork)); mythread.Start(); } catch(System.Exception ex) { MessageBox.Show(this,ex.Message,"提示",MessageBoxButtons.OK,MessageBoxIcon.Information); } } void ThreadWork() { this.dataGridDJ.CaptionText="正在查询电价数据"; mf.statusBarPanel1.Text="正在查询电价数据"; this.Cursor=Cursors.WaitCursor; string shijian=this.dateTimeDianJia.DateValue; DateTime today=DateTime.Today; string mingcheng=this.txtMingCheng.Text; string leibie=this.cmbBoxLiebie_DJ.SelectedValue.ToString(); PowerWeb.BLL.DianFeiDianJia.DianJia dj=new PowerWeb.BLL.DianFeiDianJia.DianJia(); if(shijian==today.ToString("yyyyMM")) { dt=dj.GetList(leibie,mingcheng).Tables[0]; } else { dt=dj.GetListOld(leibie,mingcheng,shijian).Tables[0]; } this.dataGridDJ.CaptionText=shijian+"电价信息 （共计条"+dt.Rows.Count.ToString()+"记录）"; dataGridDJ.BeginInvoke(new myDelegate(FillData));//异步调用（来填充） this.Cursor=Cursors.Default; mf.statusBarPanel1.Text="查询结束"; } private void FillData() { this.dataGridDJ.DataSource=dt.DefaultView; }