<form id="form1" runat="server">
            <div id="error">
                <asp:ScriptManager ID="script" runat="server"></asp:ScriptManager>
            </div>
            <asp:UpdatePanel ID="update" runat="server" UpdateMode="Always">
                <ContentTemplate>
                      <asp:TextBox ID="TextBox1" runat="server" EnableViewState="False"></asp:TextBox>
                      <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
                      <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
                      <asp:Button ID="btnOK" runat="server"  Text="AJAX" onclick="btnOK_Click"/>
                </ContentTemplate>
                <Triggers>
                    <asp:PostBackTrigger ControlID="btnOK" />
                </Triggers>
            </asp:UpdatePanel>
            <asp:UpdatePanel ID="update1" runat="server" UpdateMode="Always">
                    <ContentTemplate>
                           <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
                          <asp:TextBox ID="TextBox5" runat="server"></asp:TextBox>
                          <asp:TextBox ID="TextBox6" runat="server"></asp:TextBox>
                          <asp:Button ID="btn1" runat="server"  Text="异步" onclick="btn1_Click"/>
                    </ContentTemplate>
            </asp:UpdatePanel>
            <asp:GridView ID="gvList" runat="server">
                
            </asp:GridView>
    </form>