15 items found in the AJAX Category

Check Duplicate User Names In ASP.NET Web Pages Sites

Friday, November 29, 2013 3:22 PM

AJAX jQuery ASP.NET Web Pages WebMatrix Razor

The Web Pages Starter Site template provides a useful starting point for developing a Razor Web Pages site that includes membership. But it doesn't include any mechanism for preventing duplicate user names. This article offers one solution to the problem that uses jQuery.

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Viewed 15708 times

3 Comments for this item

Posting Data With jQuery AJAX In ASP.NET Razor Web Pages

Wednesday, November 6, 2013 7:38 PM

AJAX jQuery ASP.NET Web Pages WebMatrix Razor

There have been a few questions recently about what you can post to the server using jQuery AJAX and where to find whatever you posted. This article looks at using the jQuery ajax method in ASP.NET Razor Web Pages and explores how different options have different results.

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Viewed 96176 times

4 Comments for this item

jQuery Star Rating with ASP.NET MVC

Tuesday, September 8, 2009 1:40 PM

AJAX Javascript jQuery ASP.NET MVC

There are a number of jQuery star rating plugins to choose from. All have their pros and cons. For this site, I decided to implement the one from FyneWorks because it allows for split stars. Here's how I did it.

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Viewed 53103 times

13 Comments for this item

A Degradable jQuery AJAX Email Form for ASP.NET MVC

Friday, May 29, 2009 3:58 PM

AJAX ASP.NET 3.5 jQuery ASP.NET MVC

Pretty much every web site on the Internet features a form for users to provide feedback via email to site owners. This site is no different. Migrating to ASP.NET MVC requires a slightly different approach to that used by Web Forms development, so this article looks at one way to implement a web site contact form using the MVC framework and jQuery that degrades nicely. AJAX functionality is said to be "degradable" if a way is provided for the process to work, even though users don't have Javascript available to them.

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Viewed 70183 times

26 Comments for this item

Many ways to communicate with your database using jQuery AJAX and ASP.NET

Monday, May 4, 2009 6:39 PM

AJAX ASP.NET 3.5 jQuery

I've recently done a series of articles that feature calling databases via AJAX using jQuery. In pretty much all of the articles, I have used Web Services as my data access mechanism. Judging from the comments that some of the articles have attracted, this has caused a little confusion. But Web Services is just one mechanism. Page Methods and simple ASPX files are two more. And finally, as pointed out by a commenter, Benny Halperin, ASHX files are yet another option. In this article, I shall review each of these approaches.

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Viewed 809643 times

47 Comments for this item

Build your own Whois Lookup with ASP.NET and jQuery

Tuesday, April 14, 2009 10:39 PM

AJAX Javascript ASP.NET 3.5 jQuery

IP addresses can reveal a lot about your web visitors. For an ecommerce site, the owner or registrant of the visitor's IP address can be very useful information. You could paste each visitor IP address into one of the many free IP Lookup sites available, but that can be time-consuming and tedious. Or you could build your own lookup. This article shows how this can be done pretty quickly.

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Viewed 71870 times

9 Comments for this item

Lazy Loading jQuery Tabs with ASP.NET

Monday, March 2, 2009 7:30 AM

AJAX Javascript ASP.NET 3.5 jQuery

This article looks at efficient use of jQuery tabs when displaying data. Specifically, it covers how to lazy-load data, so that it is only accessed and displayed if the tab is clicked.

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Viewed 118322 times

28 Comments for this item

Persisting the position of jQuery Draggables in ASP.NET

Wednesday, February 4, 2009 10:29 PM

AJAX Javascript ASP.NET 3.5 jQuery

It was bound to happen - you knock up an article on jQuery draggables one day, and the next, someone like Jim ;-) comes along and asks about persisting the position of the dragged item across Postbacks, or even sessions. I suppose it's my fault - I mentioned using draggables in a previous life in the context of saving the position, so it's only fair I share how that's done.

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Viewed 32241 times

16 Comments for this item

Preventing duplicate User Names with ASP.NET and jQuery

Saturday, January 24, 2009 6:18 PM

AJAX Javascript ASP.NET 3.5 jQuery

It's a common problem: you have a registration form, but you want to prevent user names or other values from being used more than once. You need a user-friendly way to prevent duplicate values being submitted. This is where the simplicity of jQuery excels.

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Viewed 39449 times

24 Comments for this item

Ajax with Classic ASP using jQuery

Saturday, January 17, 2009 11:13 PM

Classic ASP VBScript AJAX Javascript jQuery

My simple article on Ajax with Classic ASP is one of the most popular on this site. So I thought it's about time I updated it to show how to use jQuery to Ajaxify a Classic ASP page. Since I did that, the jQuery version became even more popular but needed to be brought up to date. This latest version uses a couple of suggestions that have been provided by commentors to improve the code. I have also added a download which contains all the code needed to run the samples.

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Viewed 150712 times

12 Comments for this item

Cascading DropDownLists with jQuery and ASP.NET

Tuesday, January 13, 2009 8:47 AM

AJAX Javascript ASP.NET 3.5 jQuery

Cascading DropDownLists or dependent dropdowns are the signature dish for AJAX applications. I spent quite a while fiddling to try to get some to work, before stumbling across a life-saving jQuery plugin that makes working with DropDownLists on the client-side a breeze. This article shows how it all works, and makes use of the WebService I introduced in my previous jQuery article.

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Viewed 111906 times

13 Comments for this item

Handling JSON Arrays returned from ASP.NET Web Services with jQuery

Saturday, January 10, 2009 9:09 AM

AJAX Javascript ASP.NET 3.5 jQuery ASP.NET Web Forms

There appear to be many articles showing how to use jQuery with ASP.NET Web Services around, but the vast majority of them illustrate the use of PageMethods that return a single value - typically "Hello World!" or the current date and time. Not much use in the real world, where you may more often need to call a service that returns a collection of complex objects. Here are a couple of examples that look at playing with more than just simple values.

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Viewed 253689 times

29 Comments for this item

Upload and Crop Images with jQuery, JCrop and ASP.NET

Monday, January 5, 2009 1:54 PM

C# AJAX Javascript ASP.NET 3.5 jQuery

I got given jQuery In Action for Christmas. By nature, I'm kind of a late adopter, and I'm already regretting this fact. jQuery has been around for some time, and I wished I had looked at it sooner. It's a fantastic library that really simplifies Javascript development, and is already attracting a goodly number of plug-ins. JCrop is one such, and while it hasn't yet reached version 1.0, it is remarkably easy to use as a web based image cropper. Here's how to put jQuery, JCrop and a FileUpload control together to allow users to upload images and crop them.

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Viewed 225867 times

113 Comments for this item

ASP.NET and Ajax - using XmlHttpRequest

Tuesday, May 8, 2007 5:32 PM

ASP.NET 2.0 AJAX Javascript

If you are not interested in using the ASP.NET AJAX library offered for ASP.NET, but would like to feature small amounts of AJAX functionality on your pages, you can do this easily with some javascript and a receptive page.

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Viewed 70096 times

9 Comments for this item

AJAX and Classic ASP

Sunday, May 6, 2007 11:29 PM

Classic ASP VBScript AJAX Javascript

Using the xmlhttpserver object in javascript to request an asp page containing script to output text.

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Viewed 71731 times

7 Comments for this item