在RowUpdating事件中娶不到值？

mathieuxiao 2010-10-08 07:17:55



<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title>Untitled Page</title>

</head>

<body>

    <form id="form1" runat="server">

    <div>

        <asp:GridView ID="gvCustomer" runat="server" Width="100%" AutoGenerateColumns="False"

            AllowPaging="True" DataKeyNames="CustomerID" OnPageIndexChanging="gvCustomer_PageIndexChanging"

            BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" 

            BorderWidth="1px" CellPadding="3" onrowediting="gvCustomer_RowEditing" 

            onrowcancelingedit="gvCustomer_RowCancelingEdit" 

            onrowupdating="gvCustomer_RowUpdating">

            <FooterStyle BackColor="White" ForeColor="#000066" />

            <RowStyle ForeColor="#000066" />

            <Columns>

                <asp:BoundField DataField="CustomerID" HeaderText="客户ID" />

                <asp:TemplateField HeaderText="公司名称">

                    <EditItemTemplate>

                        <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("CompanyName") %>'></asp:TextBox>

                    </EditItemTemplate>

                    <ItemTemplate>

                        <asp:Label ID="Label1" runat="server" Text='<%# Bind("CompanyName") %>'></asp:Label>

                    </ItemTemplate>

                </asp:TemplateField>

                <asp:BoundField DataField="ContactName" HeaderText="联系人" />

                <asp:BoundField DataField="ContactTitle" HeaderText="联系人头衔" />

                <asp:BoundField DataField="Address" HeaderText="地址" />

                <asp:CommandField ShowEditButton="True" />                    

            </Columns>

            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />

            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />

            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />

        </asp:GridView>

        <br />

        <asp:Label ID="lblMessage" runat="server" Text="Label"></asp:Label>

    </div>

    </form>

</body>

</html>



using System;

using System.Configuration;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;

using DataLinq;

using System.Data.Linq;

using BusinessFacade;



public partial class _Default : System.Web.UI.Page 

{

    CustomerBFL objCustomer = new CustomerBFL();

   

    protected void Page_Load(object sender, EventArgs e)

    {

        BindGridView();

    }



    private void BindGridView()

    {

        Table<Customer> localDataTable;

        localDataTable = objCustomer.SelectRecordAll();



        gvCustomer.DataSource = (from tbl in localDataTable

                                 select new

                                 {

                                     tbl.CustomerID,

                                     tbl.CompanyName,

                                     tbl.ContactName,

                                     tbl.ContactTitle,

                                     tbl.Address

                                 });

        gvCustomer.DataBind();



        if (localDataTable.Count() == 0)

        {

            lblMessage.Text = "没有找到记录！";

        }

    }



    protected void gvCustomer_PageIndexChanging(object sender, GridViewPageEventArgs e)

    {

        this.gvCustomer.PageIndex = e.NewPageIndex;

        BindGridView();

    }



    protected void gvCustomer_RowEditing(object sender, GridViewEditEventArgs e)

    {

        gvCustomer.EditIndex = e.NewEditIndex;

        BindGridView();

    }



    protected void gvCustomer_RowUpdating(object sender, GridViewUpdateEventArgs e)

    {

        Customer cus = new Customer();



        //不论是用模板列还是BoundField列，用下面的方式取出来的值都是原来的那个值，修改后的值取不到

        //而且e.NewValues也是空值

        cus.CustomerID = ((TextBox)gvCustomer.Rows[e.RowIndex].Cells[0].Controls[0]).Text;

        Customer c = (Customer)gvCustomer.Rows[e.RowIndex].DataItem;

    }



    protected void gvCustomer_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

    {

        gvCustomer.EditIndex = -1;

        BindGridView();

    }

}