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
}
}
< %@ 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
}
}