GridView和下拉菜单DropDownList结合

刚刚把那个程序编出来~~~呵呵，写一下  语言表达能力不强，看代码就ok了~~~
先来看看效果图：
更新前：
：
点击编辑后（专业那一列出现数据绑定的DropDownList）：

点击更新后保存了结果（注意对比第一张政治经济学原理那一行的所属专业）：

晕~~~~宿舍要断点了~~~明天把代码贴出来
前台代码：（主要是GridView控件的代码）

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" 
                AutoGenerateColumns="False" BackColor="White" BorderColor="#CCCCCC" 
                BorderStyle="None" BorderWidth="1px" CellPadding="3" Width="438px" 
                AllowSorting="True" onpageindexchanging="GridView1_PageIndexChanging" 
                onrowdeleting="GridView1_RowDeleting" PageSize="6" 
                onrowcancelingedit="GridView1_RowCancelingEdit" 
                onrowediting="GridView1_RowEditing" onrowupdating="GridView1_RowUpdating">
                <PagerSettings FirstPageText="第一页" LastPageText="最后一页" 
                    Mode="NextPreviousFirstLast" NextPageText="下一页" PreviousPageText="上一页" />
                <FooterStyle BackColor="White" ForeColor="#000066" />
                <RowStyle ForeColor="#000066" />
                <Columns>
                    <asp:BoundField DataField="Name" HeaderText="课程名称" />
                    <asp:TemplateField HeaderText="所属专业">
                        <ItemTemplate>
                            <asp:Label ID="Label1" runat="server" Text='<%# Bind("Expr1") %>'></asp:Label>
                        </ItemTemplate>
                        <EditItemTemplate>
                            <asp:DropDownList ID="DropDownList2" runat="server" 
                                DataSource="<%# ddlBind() %>" DataTextField="Name" 
                                DataValueField="ID">
                            </asp:DropDownList>
                        </EditItemTemplate>
                    </asp:TemplateField>
                    <asp:BoundField DataField="JoinTime" HeaderText="加入时间" 
                        DataFormatString="{0:yyyy-MM-dd}" />
                    <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
                    <asp:TemplateField HeaderText="删除" ShowHeader="False">
                        <ItemTemplate>
                            <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" 
                                CommandName="Delete" Text="删除" OnClientClick="return confirm('确认要删除吗？')"></asp:LinkButton>
                        </ItemTemplate>
                    </asp:TemplateField>
                </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>

后台代码：

using System;
using System.Collections;
using System.Configuration;
using System.Data;
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.Data.SqlClient;

public partial class Admin_kecheng_xinxi : System.Web.UI.Page
{
    BassClass bc = new BassClass();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            Bind();
        }
    }

    private void Bind()
    {
        GridView1.DataSource = bc.GetDataSet("Select * From kecheng_zhuanye_view ORDER BY ID DESC", "kecheng_zhuanye_view");
        GridView1.DataKeyNames = new String[] { "ID" };
        GridView1.DataBind();
    }
    public DataSet ddlBind()
    {
        SqlConnection conn = bc.getCon();
        conn.Open();
        SqlDataAdapter adq = new SqlDataAdapter("select * from tb_Profession", conn);
        DataSet dataset = new DataSet();
        adq.Fill(dataset, "tb_Profession");
        conn.Close();
        return dataset;
    }

    protected void Button1_Click(object sender, EventArgs e)
    {

    }
    protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        string Name = ((TextBox)GridView1.Rows[e.RowIndex].Cells[0].Controls[0]).Text.ToString().Trim();
        DropDownList ddl = (DropDownList)GridView1.Rows[e.RowIndex].FindControl("DropDownList2");
        int ofProfession =Convert.ToInt32( ddl.SelectedValue);
        bool bl = bc.ExecSQL("update tb_Lesson set Name='" + Name + "' , ofProfession='"+ofProfession+"' where ID='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'");
        if (bl)
        {
            Response.Write(bc.messageBox("更新成功！"));
        }
        else
        {
            Response.Write(bc.messageBox("更新失败！"));
        }
        GridView1.EditIndex = -1;
        Bind();
    }
    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        Bind();
    }
    protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        bool bl = bc.ExecSQL("delete from tb_lesson where ID='" + GridView1.DataKeys[e.RowIndex] + "'");
        if (bl)
        {
            Response.Write(bc.messageBox("删除成功！"));
        }
        else
        {
            Response.Write(bc.messageBox("删除失败！"));
        }
    }
    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        Bind();
    }
    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        GridView1.PageIndex = e.NewPageIndex;
        Bind();
    }
}