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在ASP.NET中跨页面实现多选(转)
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;

  else

  SelectMultiPage.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.cs

  using 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>");

  }

  #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);

  }

  /// < summary>

  /// 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。

  /// < /summary>

  private void InitializeComponent()

  {

  this.DataGrid1.ItemDataBound +=

  new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound);

  this.DataGrid1.PageIndexChanged +=

  new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_PageIndexChanged);

  this.Button1.Click += new System.EventHandler(this.Button1_Click);

  this.Load += new System.EventHandler(this.Page_Load);

  }

  #endregion

  }

  }

posted on 2008-05-24 00:55  acheng  阅读(227)  评论(0编辑  收藏  举报