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    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"  OnRowDeleting="GridView1_RowDeleting" AllowPaging="True" AllowSorting="True" OnRowCancelingEdit="GridView1_RowCancelingEdit" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" DataKeyNames="ProductID" OnPageIndexChanging="GridView1_PageIndexChanging" PageSize="6">
                <Columns>
                    <asp:BoundField DataField="ProductID" HeaderText="产品编号" ReadOnly=true>
                        <HeaderStyle HorizontalAlign="Center" Width="150px" />
                    </asp:BoundField>
                    <asp:BoundField DataField="ProductName" HeaderText="产品名称" >
                        <HeaderStyle HorizontalAlign="Center" Width="150px" />
                    </asp:BoundField>
                    <asp:BoundField DataField="ProductDesc" HeaderText="描述">
                        <HeaderStyle HorizontalAlign="Center" Width="150px" />
                    </asp:BoundField>
                    
                    <asp:CommandField ShowEditButton="True" >
                        <HeaderStyle HorizontalAlign="Center" Width="60px" />
                    </asp:CommandField>
                    
                    <asp:CommandField ShowDeleteButton="True" >
                        <HeaderStyle HorizontalAlign="Center" Width="60px" />
                    </asp:CommandField>
                </Columns>
                 <HeaderStyle BackColor="WhiteSmoke" />
            </asp:GridView><br />
        </td></tr>
        <tr><td>
            <asp:Panel ID="Panel1" runat="server" >
            <table border="0" cellspacing="0" cellpadding="1" align=center style="height: 154px; border-right: teal 1px solid; border-top: teal 1px solid; border-left: teal 1px solid; width: 318px; border-bottom: teal 1px solid;" >
         
          <tr> 
            <td width="32%" style="width: 85px; border-bottom: gray 2px solid;"><div align="center"><span class="style2">产品编号：</span></div></td>
            <td style="width: 85px; border-bottom: gray 2px solid;" align="left">

                <asp:TextBox ID="tbx_id" runat="server"></asp:TextBox></td>
                <td style="width: 85px; border-bottom: gray 2px solid">
                    <asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="此产品已存在" ControlToValidate="tbx_id" OnServerValidate="CustomValidator1_ServerValidate"></asp:CustomValidator></td>
          </tr>
          <tr> 
            <td style="width: 85px; border-bottom: gray 2px solid;"><div align="center"><span class="style2">产品名称：</span></div></td>
            <td style="width: 85px; border-bottom: gray 2px solid;" align="left">
                <asp:TextBox ID="tbx_name" runat="server"></asp:TextBox></td>
                 <td style="width: 85px; border-bottom: gray 2px solid">
                     &nbsp;</td>
          </tr>
           <tr> 
            <td style=" border-bottom: gray 2px solid;"><div align="center"><span class="style2">描述：</span></div></td>
            <td style="border-bottom: gray 2px solid;" align="left">
                <asp:TextBox ID="txb_desc" runat="server" ForeColor="Red"></asp:TextBox></td>
                 <td style="border-bottom: gray 2px solid;">
                     &nbsp;</td>
          </tr>
          <tr> 
            <td colspan="3">
                <asp:Button ID="btn_ok" runat="server" Text=" 确 定 " BackColor="#F0FFEE" OnClick="Button1_Click" />
                <asp:Button ID="btn_csl" runat="server" Text=" 取 消 " BackColor="#F0FFEE" OnClick="Button2_Click" />
                </td>
          </tr>
        </table>
                <asp:Label ID="Label1" runat="server" ForeColor="Red" Width="316px"></asp:Label></asp:Panel>
            
         </td></tr>
        <tr><td bgcolor="#bbcccc" style="height: 40px">
            <asp:Button ID="btn_exit" runat="server" Text=" 退 出 " OnClick="btn_exit_Click" />