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<div>
<asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <asp:LinkButton ID ="linkbutton1" runat="server" > About AJAX... </asp:LinkButton> <asp:Label ID ="label1" runat="server" ></asp:Label> <asp:Panel ID ="Panel1" runat="server" BackColor="LightPink" ForeColor="DarkSalmon" Font-Bold="true"> Microsoft
has a complicated relationship with Ajax.
On the one hand, the company wants to
provide its existing ASP.NET developers with an easy way to implement Ajax functionality without
having to learn JavaScript. On the other hand, Microsoft recognizes that the future is
on the client. Therefore, it wants to provide web developers with the tools
they need to
build pure client-side Ajax
applications. For these reasons, Microsoft has both a server-side
Ajax framework and a client-side Ajax framework. If you want
to retrofit an existing ASP.NET application to take advantage of Ajax, you can take
advantage of Microsoft’s server-side Ajax
framework. To take advantage of the serverside framework,
you don’t need to write a single line of JavaScript code. You can continue to build
ASP.NET pages with server-side controls in the standard way. You learn how to take
advantage of the server-side Ajax
framework in this chapter. The
advantage of the server-side framework is that it provides existing ASP.NET
developers with a
painless method of doing Ajax.
The disadvantage of the server-side framework is that it
doesn’t escape all the problems associated with a server-side framework. You
still have to
run back to the server whenever you perform any client-side action. </asp:Panel> <cc1:CollapsiblePanelExtender ID="CollapsiblePanelExtender1" runat="server" CollapseControlID="linkbutton1" ExpandControlID="linkbutton1" CollapsedSize="0" CollapsedText="Expand
it..." ExpandDirection="Vertical" ExpandedSize="250" ExpandedText="Colaspe it..." SuppressPostBack="true" TargetControlID="Panel1" TextLabelID="label1"> </cc1:CollapsiblePanelExtender> </div> |