<asp:GridView ID="gvEditMember" runat="server" AllowPaging="True" AutoGenerateColumns="False"
                                        PageSize="5" DataKeyNames ="ID"  Width="100%" HorizontalAlign="Center" CssClass="txt"
                                        HeaderStyle-CssClass="summary-title" OnPageIndexChanging="gvEditMember_PageIndexChanging" 
                                        OnRowCancelingEdit="gvEditMember_RowCancelingEdit" 
                                        OnRowDeleting="gvEditMember_RowDeleting" OnRowEditing="gvEditMember_RowEditing" 
                                        OnRowUpdating="gvEditMember_RowUpdating"  
                                      OnRowDataBound="gvEditMember_RowDataBound" Height="225px" CellPadding="4" 
                                        EnableModelValidation="True" ForeColor="#333333" GridLines="None">
                                        <EditRowStyle BackColor="#2461BF" />
                                        <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
                                        <HeaderStyle Font-Bold="True" CssClass="summary-title" BackColor="#507CD1" 
                                            ForeColor="White"></HeaderStyle>
                                        <AlternatingRowStyle BackColor="White" />
                                        <Columns>
                                            <asp:BoundField DataField="admin_id" HeaderText="管理员代号" ReadOnly="True" >
                                                <ItemStyle HorizontalAlign="Left" Width="80px" />
                                                <HeaderStyle HorizontalAlign="Left" />
                                            </asp:BoundField>
                                            <asp:BoundField DataField="admin" HeaderText="管理员名称"  ReadOnly="True">
                                                <ItemStyle HorizontalAlign="Left" />
                                                <HeaderStyle HorizontalAlign="Left" />
                                            </asp:BoundField>
                                            <asp:CommandField ShowDeleteButton="True"                                              <ItemStyle HorizontalAlign="Left" Width="30px" />
                                            </asp:CommandField>
                                            <asp:BoundField DataField="class" HeaderText="管理员身份" >
                                                <HeaderStyle HorizontalAlign="Left" />
                                                <ItemStyle HorizontalAlign="Left" />
                                            </asp:BoundField>
                                            <asp:CommandField ShowEditButton="True" EditText="更改身份" />
                                        </Columns>
                                        <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
                                        <RowStyle BackColor="#EFF3FB" />