ASP.NET Ajax is a very powerful Ajax framework. However, when you build a real Ajax site like those out there in the Web 2.0 world, you face many problems that you will hardly find documented anywhere. In this article, I will show some advance-level ideas that I learned while building Pageflakes. We will look at the advantages and disadvantages of Batch calls, Ajax call timeouts, browser call jam problems, ASP.NET 2.0's bug in web service response caching, and so on.
Ajax is a group of interrelated web development methods used on the client-side to create interactive web applications. With Ajax, web applications can retrieve data from the server asynchronously in the background without interfering with the display and behavior of the existing page.

Ajax uses a combination of HTML and CSS to mark up and style information. The DOM is accessed with javascript to dynamically display, and to allow the user to interact with the information presented. javascript and the XMLHttpRequest object provide a method for exchanging data asynchronously between browser and server to avoid full page reloads.

Ajax, shorthand for Asynchronous javascript and XML, is a set of technologies that allows you to create Web applications that don't need to refresh Web pages in the browser. You can operate behind the scenes, connecting to the server, uploading and downloading data, and display the results in the browser using dynamic HTML. Using Ajax gives your Web pages the feel of a desktop application-the whole display will no longer flash when you click a button. VTC Author Steve Holzner helps you get started developing and building your own Ajax capable web pages. A familiarity with javascript, XML, PHP is recommended for this course. To begin learning, simply click the links.

1. Get Started with ASP.NET AJAX?#1 |
2. Get Started with ASP.NET AJAX?7 minutes, 51 seconds
3. Implement Dynamic Partial-Page Updates with ASP.NET AJAX?#2 |
4. Implement Dynamic Partial-Page Updates with ASP.NET AJAX?12 minutes, 7 seconds
5. Make Client-Side Network Callbacks with ASP.NET AJAX?#3 |
6. Make Client-Side Network Callbacks with ASP.NET AJAX?15 minutes, 26 seconds
7. Add ASP.NET AJAX Features to an Existing Web Application?#4 |
8. Add ASP.NET AJAX Features to an Existing Web Application?7 minutes, 20 seconds
9. ASP.NET AJAX Enable an Existing Web Service?#5 |
10. ASP.NET AJAX Enable an Existing Web Service?23 minutes, 31 seconds
11. Use the ASP.NET AJAX Client Library Controls?#6 |
12. Use the ASP.NET AJAX Client Library Controls?10 minutes, 33 seconds
13. Use an ASP.NET AJAX ScriptManagerProxy?#7 |
14. Use an ASP.NET AJAX ScriptManagerProxy?8 minutes, 51 seconds
15. Use the ASP.NET AJAX RoundedCorners Extender?#8 |
16. Use the ASP.NET AJAX RoundedCorners Extender?2 minutes, 9 seconds
17. Use the ASP.NET AJAX Timer Control?#9 |
18. Use the ASP.NET AJAX Timer Control?6 minutes, 21 seconds
19. Implement the Predictive Fetch Pattern for AJAX?#10 |
20. Implement the Predictive Fetch Pattern for AJAX?24 minutes, 45 seconds
21. Implement the AJAX Paging Pattern?#11 |
22. Implement the AJAX Paging Pattern?27 minutes, 12 seconds
23. Implement the AJAX Incremental Page Display Pattern?#12 |
24. Implement the AJAX Incremental Page Display Pattern?11 minutes, 47 seconds
25. Implement the Incremental Page Display Pattern using HTTP GET and POST?#13 |
26. Implement the Incremental Page Display Pattern using HTTP GET and POST?19 minutes, 31 seconds
27. Use the ASP.NET AJAX UpdateProgress Control?#14 |
28. Use the ASP.NET AJAX UpdateProgress Control?6 minutes, 12 seconds
29. Use the ASP.NET AJAX History Control?#15 |
30. Use the ASP.NET AJAX History Control?8 minutes, 59 seconds
31. Implement the AJAX After Processing Pattern?#16 |
32. Implement the AJAX After Processing Pattern?5 minutes, 40 seconds
33. Update Multiple Regions of a Page with ASP.NET AJAX?#17 |
34. Update Multiple Regions of a Page with ASP.NET AJAX?7 minutes, 18 seconds
35. Choose Between Methods of AJAX Page Updates?#18 |
36. Choose Between Methods of AJAX Page Updates?11 minutes, 23 seconds
37. Use Other javascript User Interface Libraries with ASP.NET AJAX?#19 |
38. Use Other javascript User Interface Libraries with ASP.NET AJAX?13 minutes, 34 seconds
39. Use the ASP.NET AJAX Profile Services?#20 |
40. Use the ASP.NET AJAX Profile Services?11 minutes, 4 seconds
41. Debug ASP.NET AJAX Applications Using Visual Studio 2005?#21 |
42. Debug ASP.NET AJAX Applications Using Visual Studio 2005?8 minutes, 21 seconds
43. Build a Custom ASP.NET AJAX Server Control?#22 |
44. Build a Custom ASP.NET AJAX Server Control?20 minutes, 22 seconds
45. Use javascript to Refresh an ASP.NET AJAX UpdatePanel?#23 |
46. Use javascript to Refresh an ASP.NET AJAX UpdatePanel?10 minutes, 5 seconds
47. Determine Whether an Asynchronous Postback has Occurred?#24 |
48. Determine Whether an Asynchronous Postback has Occurred?5 minutes, 14 seconds
49. Use the Conditional UpdateMode of the UpdatePanel?#25 |
50. Use the Conditional UpdateMode of the UpdatePanel?13 minutes, 9 seconds
51. Implement the Persistent Communications Pattern with the UpdatePanel?#26 |
52. Implement the Persistent Communications Pattern with the UpdatePanel?12 minutes, 1 seconds
53. Localize an ASP.NET AJAX Application?#27 |
54. Localize an ASP.NET AJAX Application?28 minutes, 49 seconds
55. Implement the Persistent Communications Pattern using Web Services?#28 |
56. Implement the Persistent Communications Pattern using Web Services?16 minutes, 37 seconds
57. Trigger an UpdatePanel Refresh from a DropDownList Control?#29 |
58. Trigger an UpdatePanel Refresh from a DropDownList Control?9 minutes, 5 seconds
59. Create an ASP.NET AJAX Extender from Scratch?#30 |
60. Create an ASP.NET AJAX Extender from Scratch?15 minutes, 11 seconds
61. Build Custom Server Controls that Work With or Without ASP.NET AJAX?#31 |
62. Build Custom Server Controls that Work With or Without ASP.NET AJAX?19 minutes, 21 seconds
63. Associate AJAX Client Behavior with an ASP.NET Server Control?#32 |
64. Associate AJAX Client Behavior with an ASP.NET Server Control?18 minutes, 13 seconds
65. Retrieve Values From Server Side AJAX Controls#33 |
66. Retrieve Values From Server Side AJAX Controls8 minutes, 28 seconds
67. Two Simple Techniques for Triggering Updates to Update Panels#34 |
68. Two Simple Techniques for Triggering Updates to Update Panels9 minutes, 23 seconds
69. Use ASP.NET AJAX Cascading Drop Down Control to Access a Database#35 |
70. Use ASP.NET AJAX Cascading Drop Down Control to Access a Database32 minutes, 23 seconds
71. Implement Infinite Data Patterns in AJAX#36 |
72. Implement Infinite Data Patterns in AJAX18 minutes, 42 seconds
73. Basic ASP.NET Authentication in an AJAX Enabled Application#37 |
74. Basic ASP.NET Authentication in an AJAX Enabled Application31 minutes, 46 seconds
75. How To Dynamically Change CSS Using the ASP.NET AJAX UpdatePanel#38 |
76. How To Dynamically Change CSS Using the ASP.NET AJAX UpdatePanel11 minutes, 19 seconds
77. How To Dynamically Add Controls to a Web Page#39 |
78. How To Dynamically Add Controls to a Web Page31 minutes, 4 seconds
79. Set Up Your Development Environment for ASP.NET 3.5#40 |
80. Set Up Your Development Environment for ASP.NET 3.58 minutes, 18 seconds
81. Set Up Your Development Environment for ASP.NET 2.0#41 |
82. Set Up Your Development Environment for ASP.NET 2.015 minutes, 10 seconds
83. Customize Error Handling for the ASP.NET AJAX UpdatePanel#42 |
84. Customize Error Handling for the ASP.NET AJAX UpdatePanel17 minutes, 26 seconds
85. Use ASP.NET AJAX Client Templates#43 |
86. Use ASP.NET AJAX Client Templates33 minutes, 50 seconds
87. Make Ajax Calls Using jQuery?#44 |
88. Make Ajax Calls Using jQuery?21 minutes, 2 seconds


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