Repeater动态增加行,PostBack保留数据

转载

mob60475705a319 2010-10-09 14:14:00

前台代码:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm2.aspx.cs" Inherits="WebApplication1.WebForm2" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Button ID="btnNew" runat="server" Text="新建" onclick="btnNew_OnClick" />
     <asp:Repeater ID="rpCustomerInfo" runat="server" 
            onitemcommand="rpCustomerInfo_ItemCommand">
     <HeaderTemplate>
     <table>
     <tr>
     <th>ID</th><th>Name</th><th>Telephone</th><th>RegisterDate</th><th>删除</th>
     </tr>
     </HeaderTemplate>
     <ItemTemplate>
     <tr>
     <td>
         <asp:TextBox ID="TextBox1" runat="server" Text='<%#Eval("ID")%>' ></asp:TextBox></td>
         <td><asp:TextBox ID="TextBox2" runat="server" Text='<%#Eval("Name")%>' ></asp:TextBox></td>
         <td><asp:TextBox ID="TextBox3" runat="server" Text='<%#Eval("Telephone")%>' ></asp:TextBox></td>
         <td><asp:TextBox ID="TextBox4" runat="server" Text='<%#Eval("RegisterDate")%>' ></asp:TextBox></td>
     <td>
         <asp:LinkButton ID="lbnDelete" runat="server" CommandName="Delete" >删除</asp:LinkButton>
     </tr>
     </ItemTemplate>
     <FooterTemplate>
     </table>
     </FooterTemplate>
     </asp:Repeater>
    </div>
    </form>
</body>
</html>

后台代码:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;

namespace WebApplication1
{
    public partial class WebForm2 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                InitData();
                DataBinds();
            }
        }

        protected void InitData()
        {
            DateTime time = DateTime.Now;

            DataTable dt = new DataTable();

            dt.Columns.Add("ID",typeof(string));
            dt.Columns.Add("Name",typeof(string));
            dt.Columns.Add("Telephone",typeof(string));
            dt.Columns.Add("RegisterDate", typeof(string));

            for (int i = 0; i < 2; i++)
            {
                DataRow dr=dt.NewRow();
                dr["ID"] = i + 1;
                dr["Name"] = "user" + (i + 1);
                dr["Telephone"] = "123456";
                dr["RegisterDate"] =time.AddDays(i * 10).ToString("yyyy-MM-dd");
                dt.Rows.Add(dr);
            }

            ViewState.Add("Data",dt);
        }

        protected void DataBinds()
        {
            rpCustomerInfo.DataSource=ViewState["Data"] as DataTable;
            rpCustomerInfo.DataBind();
        }

        protected DataTable CopyFormData()
        {
            DataTable dt = (ViewState["Data"] as DataTable).Clone();

            foreach (RepeaterItem ri in rpCustomerInfo.Items)
            {
                DataRow dr = dt.NewRow();

                dr["ID"]=(ri.FindControl("TextBox1") as TextBox).Text;
                dr["Name"] = (ri.FindControl("TextBox2") as TextBox).Text;
                dr["Telephone"] = (ri.FindControl("TextBox3") as TextBox).Text;
                dr["RegisterDate"] = (ri.FindControl("TextBox4") as TextBox).Text;
                dt.Rows.Add(dr);
            }

            return dt;
        }

        protected void btnNew_OnClick(object sender, EventArgs e)
        {
            DataTable dt = CopyFormData();

            DataRow dr = dt.NewRow();

            dt.Rows.Add(dr);

            ViewState.Add("Data",dt);

            DataBinds();
        }

        protected void rpCustomerInfo_ItemCommand(object source, RepeaterCommandEventArgs e)
        {
            if (e.CommandName=="Delete")
            {
                DataTable dt = CopyFormData();

                dt.Rows.RemoveAt(e.Item.ItemIndex);

                ViewState.Add("Data", dt);

                DataBinds();
            }
        }
    }
}