跨页面实现多选

webptr · 发表于 2007-9-19 23:43:18

<%@ Page language="c#" Codebehind="ye.aspx.cs" AutoEventWireup="false" Inherits="CrystalReport.ye" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
   <title>跨页面实现多选</title>
   <meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
   <meta name="CODE_LANGUAGE" Content="C#">
   <meta name="vs_defaultClientScript" content="JavaScript">
   <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
   <META http-equiv="content-type" content="text/html; charset=gb2312">
   <style>
   UNKNOWN { FONT-SIZE: 12px }
   #Status { TEXT-ALIGN: left }
   </style>
   <script language="JAVASCRIPT">
function AddRemoveValues(oChk) {
if(oChk.checked)
SelectMultiPage.HdnSelectedValues.value += "," + oChk.value+",";
else
SelectMultiPage.HdnSelectedValues.value = SelectMultiPage.HdnSelectedValues.value.replace("," + oChk.value+",","");
}
   </script>
</HEAD>
<body MS_POSITIONING="GridLayout">
   <form id="SelectMultiPage" runat="server">
         <asp:datagrid id="DataGrid1" HorizontalAlign="Center" AutoGenerateColumns="False" Width="600px"
            AllowPaging="True" runat="server" PageSize="10">
            <AlternatingItemStyle BackColor="#EEEEEE"></AlternatingItemStyle>
            <HeaderStyle Font-Bold="True" HorizontalAlign="Center" BackColor="#AAAADD"></HeaderStyle>
            <Columns>
               <asp:TemplateColumn HeaderText="选择">
                     <ItemTemplate>
                        <input type="checkbox" runat="server" id="chkSelect" onclick="AddRemoveValues(this)"
               value='<%#DataBinder.Eval(Container.DataItem,"id")%>' NAME="chkSelect"/>
                     </ItemTemplate>
               </asp:TemplateColumn>
               <asp:TemplateColumn HeaderText="文章标识">
                     <ItemTemplate>
                        <asp:Literal Text='<%# DataBinder.Eval(Container.DataItem, "id") %>' runat="server" ID="code"/>
                     </ItemTemplate>
               </asp:TemplateColumn>
               <asp:TemplateColumn HeaderText="发布时间">
                     <ItemTemplate>
                        <asp:Literal Text='<%# DataBinder.Eval(Container.DataItem, "createdate").ToString() %>' runat="server" ID="Literal1"/>
                     </ItemTemplate>
               </asp:TemplateColumn>
            </Columns>
            <PagerStyle HorizontalAlign="Right" Mode="NumericPages"></PagerStyle>
         </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>

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.OleDb;

namespace CrystalReport
{
/// <summary>
/// ye 的摘要说明。
/// </summary>
public class ye : System.Web.UI.Page
{
   protected System.Web.UI.WebControls.DataGrid DataGrid1;
   protected System.Web.UI.WebControls.Button Button1;
   protected System.Web.UI.WebControls.Label Label1;
   protected System.Web.UI.HtmlControls.HtmlInputHidden HdnSelectedValues;

   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();

   }

   #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.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_PageIndexChanged);
         this.DataGrid1.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound);
         this.Button1.Click += new System.EventHandler(this.Button1_Click);
         this.Load += new System.EventHandler(this.Page_Load);

   }
   #endregion

   private void DataGrid1_PageIndexChanged(object source, System.Web.UI.WebControls.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 id, 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("id")).Text+",")>= 0 )
            {
               HtmlInputCheckBox ChkSelected = (HtmlInputCheckBox)(e.Item.Cells[0].FindControl("ChkSelect"));
               ChkSelected.Checked = true;
            }
         }
   }

   private void Button1_Click(object sender, System.EventArgs e)
   {
         string str;
      str = HdnSelectedValues.Value.Replace(",,","-");
      str = str.Replace(",","-");
         if(str.Length>0)
         {
            str=str.Substring(0,str.Length-1);
         }
   this.Label1.Text=str.Replace("-","<li>");

   }
}
}

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跨页面实现多选

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