gridview 第一行编辑

<%@ Page Language="C#" AutoEventWireup="true" Codebehind="Default.aspx.cs" Inherits="WebApplication2._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>未命名頁面</title>
    <style type="text/css">       
    .hide{display:none;}  
    </style>

<script type="text/javascript">        //选中所有行       
    function SelectAll(chkAll)      
     {          
      var gridview = document.getElementById("GridView1");      
           if (gridview)     
                 {             
                  //获取到GridView1中的所有input标签             
                  var inputs = gridview.getElementsByTagName("input");           
                     for(var i=0;i<inputs.length;i++)          
                         {           
                             if (inputs[i].type=="checkbox")    
                                   {              
                                        //设置所有checkbox的选中状态与chkAll一致           
                                        inputs[i].checked = chkAll.checked;     
                                     }      
                          }     
         }  
      }         
                                                                                          
 //给选中行换背景色      
      function checkRow(chkRow)     
       {        
          var row = chkRow.parentNode.parentNode;    
              if(row)        
                {             
                    if (chkRow.checked)    
                        row.style.backgroundColor="#7799CC";
                         else  
                          row.style.backgroundColor="#FFFFFF";
                           }      
                           }  
    </script>

</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:LinkButton ID="lbtnAddRow" runat="server" Width="80px" OnClick="lbtnAddRow_Click">添加行</asp:LinkButton>
            <asp:LinkButton ID="btnDeleteRow" runat="server" OnClick="btnDeleteRow_Click" OnClientClick="return confirm('确定要删除选中行吗？');">删除选中行</asp:LinkButton>
        </div>
        <div>
            <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4"
                ForeColor="#333333">
                <Columns>
                    <asp:BoundField DataField="ID" HeaderText="ID">
                        <ItemStyle CssClass="hide" BorderColor="#507CD1" />
                        <HeaderStyle CssClass="hide" />
                    </asp:BoundField>
                    <asp:TemplateField HeaderText="序号">
                        <ItemTemplate>
                            <%# Container.DataItemIndex + 1%>
                        </ItemTemplate>
                        <ItemStyle BorderColor="#507CD1" HorizontalAlign="Center" BorderWidth="1px" />
                    </asp:TemplateField>
                    <asp:TemplateField>
                        <HeaderTemplate>
                            <input id="chkAll" type="checkbox" onclick="SelectAll(this)" />
                        </HeaderTemplate>
                        <ItemTemplate>
                            <input id="chkRow" type="checkbox" onclick="checkRow(this);" runat="server" />
                        </ItemTemplate>
                        <ItemStyle Width="30px" HorizontalAlign="Center" BorderColor="#507CD1" BorderWidth="1px" />
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="姓名">
                        <ItemTemplate>
                            <asp:TextBox ID="txtName" runat="server" Text='<%# Bind("Name") %>' BorderStyle="None"></asp:TextBox>
                        </ItemTemplate>
                        <ItemStyle Width="100px" BorderColor="#507CD1" BorderWidth="1px" />
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="平时成绩">
                        <ItemTemplate>
                            <asp:TextBox ID="txtUsuallyResults" runat="server" Text='<%# Bind("UsuallyResults") %>'
                                BorderStyle="None"></asp:TextBox>
                        </ItemTemplate>
                        <ItemStyle Width="100px" BorderColor="#507CD1" BorderWidth="1px" />
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="考试成绩">
                        <ItemTemplate>
                            <asp:TextBox ID="txtExamResults" runat="server" Text='<%# Bind("ExamResults") %>'
                                BorderStyle="None"></asp:TextBox>
                        </ItemTemplate>
                        <ItemStyle Width="100px" BorderColor="#507CD1" BorderWidth="1px" />
                    </asp:TemplateField>
                </Columns>
                <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
            </asp:GridView>
        </div>
    </form>
</body>
</html>

-----------------------------------

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

namespace WebApplication2
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!Page.IsPostBack) {
                DataTable table = new DataTable();
                table.Columns.Add(new DataColumn("ID"));
                table.Columns.Add(new DataColumn("Name"));
                table.Columns.Add(new DataColumn("UsuallyResults"));
                table.Columns.Add(new DataColumn("ExamResults"));
                DataRow row = table.NewRow();
                table.Rows.Add(row);
                GridView1.DataSource = table; GridView1.DataBind();
            }
        }
        protected void lbtnAddRow_Click(object sender, EventArgs e)
        {
            DataTable table = GetGridViewData();

DataTable table1 = new DataTable();
            table1.Columns.Add(new DataColumn("ID"));
            table1.Columns.Add(new DataColumn("Name"));
            table1.Columns.Add(new DataColumn("UsuallyResults"));
            table1.Columns.Add(new DataColumn("ExamResults"));
            DataRow newRow1 = table1.NewRow();
            newRow1["ID"] = Guid.NewGuid().ToString();
            table1.Rows.Add(newRow1);
           // foreach (DataRow dr in table1.Rows)
           // {
            for(int i=0;i<table.Rows.Count;i++)
            {
                DataRow sourseRow = table1.NewRow();
                sourseRow["ID"] =table.Rows[i]["ID"].ToString();
                sourseRow["Name"] = table.Rows[i]["name"].ToString(); ;
                sourseRow["UsuallyResults"] = "2";
                sourseRow["ExamResults"] ="1";
                table1.Rows.Add(sourseRow);
            }
           // }
            GridView1.DataSource = table1;
            GridView1.DataBind();

}   
        private DataTable GetGridViewData()
        {
            DataTable table = new DataTable();
            table.Columns.Add(new DataColumn("ID"));
            table.Columns.Add(new DataColumn("Name"));
            table.Columns.Add(new DataColumn("UsuallyResults"));
            table.Columns.Add(new DataColumn("ExamResults"));
            foreach (GridViewRow row in GridView1.Rows)
            {
                DataRow sourseRow = table.NewRow();
                sourseRow["ID"] = row.Cells[0].Text;
                sourseRow["Name"] = ((TextBox)row.Cells[3].FindControl("txtName")).Text;
                sourseRow["UsuallyResults"] = ((TextBox)row.Cells[4].FindControl("txtUsuallyResults")).Text;
                sourseRow["ExamResults"] = ((TextBox)row.Cells[5].FindControl("txtExamResults")).Text;
                table.Rows.Add(sourseRow);
            }
            return table;
        }

protected void btnDeleteRow_Click(object sender, EventArgs e)
        {   DataTable table = GetGridViewData();
            foreach (GridViewRow row in GridView1.Rows)
            {
                if (((HtmlInputCheckBox)row.Cells[2].FindControl("chkRow")).Checked)
            { foreach (DataRow dtRow in table.Rows)
            { if (dtRow["ID"].ToString() == row.Cells[0].Text)
            {
                table.Rows.Remove(dtRow);
                break;
            }
            }
                }
            }
            GridView1.DataSource = table; GridView1.DataBind();
        }
    }
}