求助ajax.

Question

<asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
    <table class="style1">
        <tr>
            <td style="text-align: center;" colspan="2" class="style2">
                内容列表
            </td>
            <td>
                <asp:Button ID="BtnDeleteAll" runat="server" Text="全部删除" OnClick="BtnDeleteAll_Click"
                    OnClientClick="return confirm('您确定要删除吗?')" />
                <asp:Button ID="BtnAdd" runat="server" Text="添加" OnClick="BtnAdd_Click" />
            </td>
        </tr>
        <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
                <tr>
                    <td class="style3">
                        大板块：<asp:DropDownList ID="ddlBigContent" runat="server" Width="200px" AutoPostBack="True"
                            OnSelectedIndexChanged="ddlBigContent_SelectedIndexChanged">
                        </asp:DropDownList>
                    </td>
                    <td class="style3">
                        小板块：<asp:DropDownList ID="ddlSmallContent" runat="server" Width="200px" OnSelectedIndexChanged="ddlSmallContent_SelectedIndexChanged"
                            AutoPostBack="True">
                        </asp:DropDownList>
                    </td>
                </tr>
                <tr>
                    <td class="style4" colspan="2">
                        <asp:GridView ID="GVUsers" runat="server" AutoGenerateColumns="False" Width="98%"
                            DataKeyNames="_id" CellPadding="4" ForeColor="#333333" GridLines="None" OnRowDataBound="GVUsers_RowDataBound"
                            EmptyDataText="对不起，没有您需要的数据!" AllowPaging="True" PageSize="15">
                            <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
                            <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
                            <HeaderStyle CssClass="head" Font-Size="Small" />
                            <RowStyle BackColor="#F7F6F3" ForeColor="#333333" HorizontalAlign="Center" />
                            <Columns>
                                <asp:TemplateField HeaderText="全选">
                                    <HeaderTemplate>
                                        <asp:CheckBox ID="cbCheckAll" runat="server" Text="全选" OnCheckedChanged="cbCheckAll_CheckedChanged"
                                            onclick="CheckAll(this)" />
                                    </HeaderTemplate>
                                    <ItemTemplate>
                                        <asp:CheckBox ID="cbCheckItem" runat="server" />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                                    </ItemTemplate>
                                    <HeaderStyle Font-Bold="True" />
                                    <ItemStyle HorizontalAlign="Center" />
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="标题">
                                    <ItemTemplate>
                                        <%# Eval("_title")%>
                                    </ItemTemplate>
                                    <ItemStyle HorizontalAlign="Center" />
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="内容提要">
                                    <ItemTemplate>
                                        <%# SubStringContent(Eval("_content").ToString())%>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="所在板块">
                                    <ItemTemplate>
                                        <%# Eval("_menuName") %>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="是否推荐">
                                    <ItemTemplate>
                                        <%# IsBest(Convert.ToInt32(Eval("_isBest")))%>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="修改">
                                    <ItemTemplate>
                                        <asp:Image ID="Image1" runat="server" ImageUrl="~/Admin/images/037.gif" />
                                        <a href="UpdateContent.aspx?id=<%# Eval("_Id") %>">修改</a>
                                    </ItemTemplate>
                                    <ItemStyle HorizontalAlign="Center" />
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="删除">
                                    <ItemTemplate>
                                        <asp:Image ID="Image2" runat="server" ImageUrl="~/Admin/images/010.gif" />
                                        <asp:LinkButton ID="LbtnDelete" runat="server" OnClientClick="return confirm('您确定要删除吗？')"
                                            OnClick="LbtnDelete_Click">删除</asp:LinkButton>
                                    </ItemTemplate>
                                    <ItemStyle HorizontalAlign="Center" />
                                </asp:TemplateField>
                            </Columns>
                            <EditRowStyle BackColor="#999999" />
                            <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
                        </asp:GridView>
                    </td>
                </tr>
            </ContentTemplate>
        </asp:UpdatePanel>
还是会刷新，求大虾指点、

Answer 1

把整个页面放到 <asp:UpdatePanel ID="UpdatePanel1" runat="server">

Answer 2

把整个页面放到 <asp:UpdatePanel ID="UpdatePanel1" runat="server">

Answer 3

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
<table></table>
</ContentTemplate>
        </asp:UpdatePanel>

Answer 4

 <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
....包含你出发页面刷新的 按钮
</ContentTemplate>
        </asp:UpdatePanel>或 <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
....包含你出发页面刷新的 按钮
</ContentTemplate>
        </asp:UpdatePanel>
 <Triggers >
    <asp:AsyncPostBackTrigger ControlID="控件ID" />
    </Triggers>