Execute server code without full postback

Question

When the user clicks the button, I need to create a .bmp file on the server. After creating the .bmp file, I upload it to the html page. Would Ajax be the best way to do this?

Answer 1

Yes AJAX is the best way. This can be done through the ASP.NET AJAX mechanisms , jQuery itself or another of your choice.

If you just create an image to return to the browser, instead of calling the ASP.NET page life cycle (.aspx) instead, use a lighter HTTP handler (.ashx). Here is a server side example .

(HTTP handlers work by inheriting your class from something like DefaultHttpHandler or by implementing IHttpHandler instead of the Page class.

Additional Samples and AJAX Communications Notes:

• ASPX , WebMethod , AJAX ; . ASMX Web Service, WebMethod.
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• ASP.NET AJAX HTTP
• tidbits Stackoverflow, , ASPX ASHX, , IHttpHandler web.config httphandler, .

, HTTP Monitoring, ​​ Fiddler, HTTP- .

Answer 2

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http://docs.jquery.com/Main_Page

jQuery ajax documentation.

http://api.jquery.com/category/ajax/

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Answer 3

. BMP , HTML?

BMP , Serer, , JPG . , AJAX .

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, Fiddler, Firefox Firebug, -.

Answer 4

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Answer 5

, Ajax, , postback

Answer 6

You do not need to use Ajax. You can set your page to AutoEventWireUp = "false" and handle all events manually. Circle the Page_Load event on the click button and voila.