Brief Introduction to ASP. NET Ajax

(Note: This content is from msdn webcast and is only used as personal study notes. If you have any errors, please correct them)

Ajax applications

-- Asynchronous: Send HTTP requests asynchronously (XMLHttpRequest)

-- Page partial refresh

-- Reduce data transmission volume

-- Improve user experience

ASP. NET Ajax implementation

-- Seamless integration with ASP. NET 2.0 (not to mention version 4.0)

-- Easily add Ajax results

-- Server-centric development (no JS writing requiredCode)

-- Client-centered development (with rich Support)

ASP. NET Ajax component (Based on ASP. NET 2.0)

-- ASP. NET 2.0 Ajax extensions (server)

(1) serialization and deserialization

(2) client access to Web Services

(3) server-side Ajax controls (scriptmanager, updatepanel, Extender)

-- Scriptmanager: one page must have one and only one.

-- Microsoft ASP. NET Library (client)

(1) Basic JavaScript Extension

(2) browser compatibility layer (run on different browsers)

(3) Object-Oriented Systems

(4) asynchronous communication layer (equivalent to encapsulating objects for your convenience)

(5) client base library

 Ajax Control Toolkit

(1) ASP. NET Ajax Model

-- Server Extender

-- Client Behavior

(2) easily add Ajax Effects

(3)CommunitySupport, and finally complete Community Development