怎样实现GridView动态添加行的功能

怎样实现GridView动态添加行的功能？？？功能描述：在GridView每一行的后面都有一个按钮“添加一行”，当点击这个按钮时，就会出“该行”的后面添加一个空行，用来添加数据。其实这个GridView+TextBox是用来模拟Excel录入的，这个“动态添加行”，也就是模拟Excel插入行的功能。请问这样的功能怎样实现？？？

解决方案 »

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protected void Button1_Click(object sender, EventArgs e)
    {
        DataTable dt = ReadGridView();
        //this.GridView1.DataSource = dt;
        //this.GridView1.DataBind();
        DataRow row = dt.NewRow();
        row.ItemArray = new object[] { "oec2003","oec2003","oec2003" };
        dt.Rows.InsertAt(row, 0);
        dt.AcceptChanges();
        this.GridView1.DataSource = dt;
        this.GridView1.DataBind();
    }
http://topic.csdn.net/u/20080903/14/80fd813a-3242-470e-be1d-292b8598448e.html
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="VSG.Web._Default" %><!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>.
    <style type="text/css">
        body
        {
            font-size: 12px;
            text-align: center;
        }
        .TextBox
        {
            border-right: #ffffff 0px solid;
            border-top: #ffffff 0px solid;
            font-size: 9pt;
            border-left: #ffffff 0px solid;
            border-bottom: #c0c0c0 1px solid;
            background-color: #ffffff;
        }
        table.gridview_m
        {
            border-collapse: collapse;
            border: solid 1px #93c2f1;
            width: 98%;
            font-size: 10pt;
        }
        table.gridview_m td, th
        {
            border-collapse: collapse;
            border: solid 1px #ffffff;
            font-size: 10pt;
        }
        table.gridview_m1
        {
            border-collapse: collapse;
            border: solid 1px #93c2f1;
            width: 98%;
            font-size: 10pt;
        }
        table.gridview_m1 td1, th1
        {
            border-collapse: collapse;
            border: solid 1px #93c2f1;
            font-size: 10pt;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <div style="text-align: center">
        <asp:GridView ID="Gv1" runat="server" AutoGenerateColumns="False" Height="1px" OnRowDeleting="Gv1_RowDeleting"
            CssClass="gridview_m1" onrowcommand="Gv1_RowCommand">
            <RowStyle HorizontalAlign="Center" VerticalAlign="Middle" />
            <Columns>
                <asp:TemplateField HeaderText="编号">
                    <ItemTemplate>
                        <%# Container.DataItemIndex+1 %>
                        <asp:Label ID="Lb_Index" runat="server" Text='<%# Container.DataItemIndex+1 %>' Visible="false"></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="现任职务">
                    <ItemTemplate>
                        <asp:TextBox ID="Txt_Cposition" runat="server" Text='<%#Eval("Cposition")%>' CssClass="TextBox"></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="姓名">
                    <ItemTemplate>
                        <asp:TextBox ID="Txt_UserName" runat="server" Text='<%#Eval("UserName")%>' CssClass="TextBox"></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="一月份">
                    <ItemTemplate>
                        <asp:TextBox ID="Txt_Jan" runat="server" Text='<%#Eval("JanCount")%>' CssClass="TextBox"></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="二月份">
                    <ItemTemplate>
                        <asp:TextBox ID="Txt_Feb" runat="server" Text='<%#Eval("FebCount")%>' CssClass="TextBox"></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="删除">
                    <ItemTemplate>
                        <asp:LinkButton ID="Lkb_delete" runat="server" CommandName="delete" Text="删除" CommandArgument='<%# Container.DataItemIndex+1 %>'></asp:LinkButton>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="操作">
                    <ItemTemplate>
                        <asp:LinkButton ID="btnRowConfirm" runat="server" Text="结果确认" CommandName="ConfirmResult" />
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
        <p>
             </p>
        <p>
            职务：<asp:TextBox ID="txt_Cp" runat="server" CssClass="TextBox"></asp:TextBox></p>
        <p>
            姓名：<asp:TextBox ID="txt_Un" runat="server" CssClass="TextBox"></asp:TextBox></p>
        <p>
            一月：<asp:TextBox ID="txt_Jn" runat="server" CssClass="TextBox"></asp:TextBox></p>
        <p>
            二月：<asp:TextBox ID="txt_Fb" runat="server" CssClass="TextBox"></asp:TextBox></p>
        <p>
            <asp:Button ID="Btn_Add" runat="server" OnClick="Btn_Add_Click" Text="添加" />
        </p>
    </div>
    </form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;using System.Data;
using System.Collections;namespace VSG.Web
{
    public partial class _Default : System.Web.UI.Page
    {
        Hashtable ht = new Hashtable();//记录ID和索引
        DataTable Data = new DataTable();
        protected void Page_Load(object sender, EventArgs e)
        {            if (ViewState["Data"] != null)
            {
                GridViewBind(this.Gv1, ViewState["Data"] as DataTable);
            }
            else
            {                Data.Columns.Add("Cposition");
                Data.Columns.Add("UserName");
                Data.Columns.Add("JanCount");
                Data.Columns.Add("FebCount");
                Data.Rows.Add(new object[] { "卑鄙副总工程师", "张1", "98", "94" });
                Data.Rows.Add(new object[] { "矿建副总工程师", "张2", "99", "94" });
                Data.Rows.Add(new object[] { "机电副总工程师", "张3", "95", "93" });
                Data.Rows.Add(new object[] { "基建副总工程师", "张4", "93", "91" });
                GridViewBind(this.Gv1, Data);
                ViewState["Data"] = Data;
            }            Data = ViewState["Data"] as DataTable;
            if (Data.Rows.Count > 0)
            {
                for (int i = 0; i < Data.Rows.Count; i++)
                {
                    //这里应该存一个唯一键来记录索引
                    //添加这个索引是为了后面删除和更新很方便的找到
                    ht.Add(i + 1, i);
                }
            }
        }
        protected void Gv1_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            //如果不为空就取出来
            if (ViewState["Data"] != null)
            {
                Data = ViewState["Data"] as DataTable;
            }
            //取当前行ID
            int id = Convert.ToInt32((this.Gv1.Rows[e.RowIndex].FindControl("Lkb_delete") as LinkButton).CommandArgument);
            //匹配索引
            int index = Convert.ToInt32(ht[id]);
            //移除行
            this.Data.Rows.RemoveAt(index);
            //绑定数据
            GridViewBind(this.Gv1, Data);
            //保存数据
            ViewState["Data"] = Data;        }
        protected void Btn_Add_Click(object sender, EventArgs e)
        {
            //先取出ViewState["Data"]是否为空.
            if (ViewState["Data"] != null)
            {
                Data = ViewState["Data"] as DataTable;
            }
            else
            {
                Data = CreateTable(0);
            }
            Data.Rows.Add(new object[] { this.txt_Cp.Text, this.txt_Un.Text, this.txt_Jn.Text, this.txt_Fb.Text });//添加行
            GridViewBind(this.Gv1, Data);//绑定
            //同时加入ViewState["Data"]
            ViewState["Data"] = Data;
        }        /// <summary>
        /// 空行数
        /// </summary>
        /// <param name="Count"></param>
        /// <returns></returns>
        private DataTable CreateTable(int Count)
        {
            DataTable Data = new DataTable();
            Data.Columns.Add("Cposition");
            Data.Columns.Add("UserName");
            Data.Columns.Add("JanCount");
            Data.Columns.Add("FebCount");
            if (Count > 0)
            {
                for (int i = 0; i < Count; i++)
                {
                    Data.Rows.Add(new object[] { "", "", "", "" });
                }
            }
            return Data;
        }        private void GridViewBind(GridView GV, DataTable dt)
        {
            if (dt.Rows.Count != 0)
            {
                GV.DataSource = dt;
            }
            else
            {
                GV.DataSource = null;
                GV.EmptyDataText = "没有可以显示的数据";
            }
            GV.DataBind();
        }        protected void Gv1_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            if (e.CommandSource.GetType() == typeof(LinkButton) && e.CommandName == "ConfirmResult")
            {
                this.ClientScript.RegisterStartupScript(GetType(), "", "<script>alert('ddddd');</script>");
            }
        }
    }
}
看起来，你想做一个编辑操作中从来不重新绑定数据源的GridView应用。那么就要直接对GridView.Rows操作，你也无须对什么数据保存到ViewState，因为GridView自己会维持它的状态。
从数据库中查询DataTable，然后在数据库中插入一行，把序号指定到“该行”的后面然后重新绑定。