GridView控件编辑、更新、删除示例(更新包含有DropDownList控件使用)

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GridView控件修改、删除例子，修改时含有DropDownList控件。
示例运行效果图：

GridViewUp.aspx文件代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GridViewUp.aspx.cs" Inherits="gridview_GridViewUp" %><!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>无标题页</title></head><body>    <form id="form1" runat="server">        <div>            <table cellpadding="0" cellspacing="0" border="0" width="80%" style="font-size: 11px">                <tr>                    <td align="center">                        <asp:GridView ID="GridView1" runat="server" Width="100%" CellPadding="4" ForeColor="#333333"                            AutoGenerateColumns="False" AllowPaging="True" PageSize="12" OnRowCancelingEdit="GridView1_RowCancelingEdit"                            OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowDeleting="GridView1_RowDeleting"                            DataKeyNames="id,name" OnPageIndexChanging="GridView1_PageIndexChanging" DataMember="card,price" OnRowDataBound="GridView1_RowDataBound" GridLines="None">                            <Columns>                                <asp:BoundField HeaderText="身份证号" DataField="card" Visible=false />                                <asp:BoundField HeaderText="编号" DataField="id" ReadOnly="True" />                                <asp:BoundField DataField="name" HeaderText="姓名" ReadOnly="True" />                                <asp:TemplateField HeaderText="身份证号">                                    <ItemTemplate>                                        <%# Eval("card") %>                                    </ItemTemplate>                                    <EditItemTemplate>                                        <asp:TextBox ID="TBCard" Text='<%# Eval("card") %>' runat="server" Width="140px" />                                    </EditItemTemplate>                                    <ItemStyle Width="150px" />                                </asp:TemplateField>                                <asp:TemplateField HeaderText="学历">                                    <ItemTemplate>                                        <%# Eval("description")%>                                    </ItemTemplate>                                    <EditItemTemplate>                                        <asp:HiddenField ID="HDFXueli" runat="server" Value='<%# Eval("xueli") %>' />                                        <asp:DropDownList ID="DDLXueli" runat="server" Width="90px" />                                    </EditItemTemplate>                                    <ItemStyle Width="100px" />                                </asp:TemplateField>                                <asp:TemplateField HeaderText="价格">                                    <ItemTemplate>                                        <%# Eval("price") %>                                    </ItemTemplate>                                    <EditItemTemplate>                                        <asp:TextBox ID="TBPrice" Text='<%# Eval("price") %>' runat="server" Width="90px" />                                    </EditItemTemplate>                                    <ItemStyle Width="100px" />                                </asp:TemplateField>                                <asp:BoundField HeaderText="建立时间" DataField="createdate" ReadOnly="True" />                                <asp:CommandField ShowDeleteButton="True" ShowEditButton="True" HeaderText="操作" />                            </Columns>                            <PagerSettings FirstPageText="" LastPageText="" NextPageText="" PreviousPageText="" />                            <RowStyle Height="20px" BackColor="#F7F6F3" ForeColor="#333333" />                            <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />                            <EditRowStyle BackColor="#999999" />                            <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />                            <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />                            <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />                            <AlternatingRowStyle BackColor="White" ForeColor="#284775" />                        </asp:GridView>                    </td>                </tr>            </table>        </div>    </form></body></html>

GridViewUp.aspx.cs文件代码：

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;using System.Data.SqlClient;public partial class gridview_GridViewUp : System.Web.UI.Page{    protected void Page_Load(object sender, EventArgs e)    {        if (!IsPostBack)        {            GridViewBind();        }    }    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)    {        GridView1.PageIndex = e.NewPageIndex;        GridViewBind();    }    private void GridViewBind()    {        string connStr = ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString;        string SqlStr = "SELECT a.*,b.description FROM test01 a,xueli b where a.xueli=b.code and a.id<1000 and a.id>200";        DataSet ds = new DataSet();        try        {            SqlConnection conn = new SqlConnection(connStr);            if (conn.State.ToString() == "Closed") conn.Open();            SqlDataAdapter da = new SqlDataAdapter(SqlStr, conn);            da.Fill(ds, "test01");            if (conn.State.ToString() == "Open") conn.Close();            GridView1.DataSource = ds.Tables[0].DefaultView;            GridView1.DataBind();        }        catch (Exception ex)        {            Response.Write("数据库错误，错误原因：" + ex.Message);            Response.End();        }    }    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)    {        if (((DropDownList)e.Row.FindControl("DDLXueli")) != null)        {                    DropDownList ddlxueli = (DropDownList)e.Row.FindControl("DDLXueli");            // 生成 DropDownList 的值，绑定数据            string connStr = ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString;            string SqlStr = "SELECT * from xueli";            DataSet ds = new DataSet();            SqlConnection conn = new SqlConnection(connStr);            if (conn.State.ToString() == "Closed") conn.Open();            SqlDataAdapter da = new SqlDataAdapter(SqlStr, conn);            da.Fill(ds, "xueli");            if (conn.State.ToString() == "Open") conn.Close();            ddlxueli.DataSource = ds.Tables[0].DefaultView;            ddlxueli.DataTextField = "description";            ddlxueli.DataValueField = "code";            ddlxueli.DataBind();            //            // 选中 DropDownList            ddlxueli.SelectedValue = ((HiddenField)e.Row.FindControl("HDFXueli")).Value;            //        }    }    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)    {        GridView1.EditIndex = e.NewEditIndex;        GridViewBind();    }    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)    {        GridView1.EditIndex = -1;        GridViewBind();    }    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)    {        string id = GridView1.DataKeys[e.RowIndex].Values[0].ToString();        string card = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("TBCard")).Text;        string xueli = ((DropDownList)GridView1.Rows[e.RowIndex].FindControl("DDLXueli")).SelectedValue;        string price = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("TBPrice")).Text;        string connStr = ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString;        string SqlStr = "update test01 set card='" + card + "',xueli='" + xueli + "',price='" + price + "' where id=" + id;        try        {            SqlConnection conn = new SqlConnection(connStr);            if (conn.State.ToString() == "Closed") conn.Open();            SqlCommand comm = new SqlCommand(SqlStr, conn);            comm.ExecuteNonQuery();            comm.Dispose();            if (conn.State.ToString() == "Open") conn.Close();            GridView1.EditIndex = -1;            GridViewBind();        }        catch (Exception ex)        {            Response.Write("数据库错误，错误原因：" + ex.Message);            Response.End();        }    }    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)    {        string id = GridView1.DataKeys[e.RowIndex].Values[0].ToString();        string connStr = ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString;        string SqlStr = "delete from test01 where id=" + id;        try        {            SqlConnection conn = new SqlConnection(connStr);            if (conn.State.ToString() == "Closed") conn.Open();            SqlCommand comm = new SqlCommand(SqlStr, conn);            comm.ExecuteNonQuery();            comm.Dispose();            if (conn.State.ToString() == "Open") conn.Close();            GridView1.EditIndex = -1;            GridViewBind();        }        catch (Exception ex)        {            Response.Write("数据库错误，错误原因：" + ex.Message);            Response.End();        }    }}

sql server2000生成表代码：

CREATE TABLE [dbo].[test01] (    [id] [decimal](18, 0) IDENTITY (1, 1) NOT NULL ,    [name] [varchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,    [card] [varchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,    [xueli] [varchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,    [price] [decimal](18, 0) NULL ,    [createdate] [datetime] NULL ) ON [PRIMARY]GOALTER TABLE [dbo].[test01] ADD     CONSTRAINT [DF_test01_createdate] DEFAULT (getdate()) FOR [createdate],    CONSTRAINT [PK_test01] PRIMARY KEY CLUSTERED     (        [id]    ) ON [PRIMARY] GOCREATE TABLE [dbo].[xueli](    [id] [int] IDENTITY(1,1) NOT NULL,    [code] [int] NULL,    [description] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NULL,CONSTRAINT [PK_xueli] PRIMARY KEY CLUSTERED (    [id] ASC)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]) ON [PRIMARY]

xueli表中的数据：

id    code    description
1    1    博士
2    2    硕士
3    3    学士

http://hi.baidu.com/ljsheng1982/blog/item/00289bc8c15f3913bf09e669.html