Items By Type: Tutorial

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

10 January 2009 09:09

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

05 January 2009 13:54

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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Create a Google Site Map with ASP.NET

31 December 2008 09:32

ASP.NET 3.5 ASP.NET Web Forms

Over Christmas, I had a bit of spare time, so I decided to add some functionality to this site. One of the things that I added was the ability for people to post comments about specific articles, and you will see that a form has been added at the end of this article. The other thing I have been meaning to get round to is to add a Google Site Map. I believe I have created my site to be as friendly to Google's bots as possible, but there is no harm in submitting a site map to guarantee that Google knows about all the pages I want indexed.

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A DataBound Javascript News Ticker for ASP.NET

25 December 2008 14:18

Javascript ASP.NET 3.5

It's funny how requirements come along like buses in the ASP.NET forums - you suddenly get the same thing asked for by two or more people in quick succession. Recently, a couple of people asked for help creating a Javascript ticker, like the one at the top of the BBC News site, which displays a selected number of headlines drawn from a database. I had adapted the code from the BBC site to create a similar widget that displayed the most recent threads in a message board on an old Classic ASP site some time ago. It's about time I dusted it off and updated it for use in an ASP.NET application.

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MS Access Date and Time with ASP.NET

13 December 2008 21:47

MS Access ASP.NET 3.5

Getting odd results and unexpected errors when working with Dates and Times in Access through ASP.NET is a common problem. Here's an overview of the Access DateTime data type, and some resolutions to the more frequently encountered errors.

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Delegates, Anonymous Methods and Lambda Expressions in C#

07 December 2008 19:33

C# ASP.NET 3.5

Delegates in C# cause a fair amount of confusion, but with the introduction of LINQ to SQL and the profilic use of the Lambda Expression operator (=>) that it has foisted on an unprepared batch of beginners, an understanding of how these two items are related, together with Anonymous Methods becomes more important. Most definitions of Delegates that you find start off with comparing them to "function pointers in C or C++", which is great if you ever worked with those languages and understood them, but not helpful to new programmers. Here's my attempt at simplifying the various concepts.

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Microsoft Chart Controls For ASP.NET

28 November 2008 13:38

ASP.NET 3.5

Many times, I have seen questions about where to obtain Charting controls for ASP.NET web applications, and until recently, the answer has always been to have a look at many of the third party offers that are available from the leading control development companies. That is until Microsoft released their Chart Controls for both Windows Forms and ASP.NET to work with .Net 3.5 SP1.

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iTextSharp - Page Layout with Columns

24 November 2008 07:41

C# ASP.NET 3.5 iTextSharp

I have now covered many of the basics involved in generating PDF files from ASP.NET using iTextSharp in the series of articles listed below. This article will look at additional ways to provide formatting to documents through the use of columns.

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iTextSharp - Drawing shapes and Graphics

17 November 2008 12:30

C# ASP.NET 3.5 iTextSharp

The previous iTextSharp article looked at bringing images into a PDF file and working with them. Sometimes, however, you may want to draw shapes and lines within the PDF and not rely on images. iTextSharp includes a lot of functionality that covers simple drawing to quite complex shapes. This article gets you started. Previous articles are listed below:

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iTextSharp - Working with images

07 November 2008 23:00

C# ASP.NET 3.5 iTextSharp

The seventh article in my iTextSharp series looks at working with images. This article builds on the previous six which are listed below.

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iTextSharp - Introducing Tables

03 November 2008 07:34

C# ASP.NET 3.5 iTextSharp

Tables will probably be one of the most used elements in PDFs generated from ASP.NET applications to provide the structure for documents such as orders and invoices. This overview is not an exhaustive examination of tables, but provides an introduction to working with them through iTextSharp, and builds on the previous articles in this iTextSharp series:

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iTextSharp - Links and Bookmarks

23 October 2008 21:51

C# ASP.NET 3.5 iTextSharp

Interactivity within PDF documents is enabled though Anchors (links) and Bookmarks. Following earlier articles in my iTextSharp series, this particular contribution will introduce the basics of linking and bookmarking PDF documents created via iTextSharp. You may want to review earlier articles in this series, if you haven't already done so.

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Lists with iTextSharp

20 October 2008 08:32

C# ASP.NET 3.5 iTextSharp

Having already looked at how to create a PDF document with iTextSharp, set fonts and their styles and add text, this article turns its attention to lists. Ordered and unordered lists will be covered. You may want to review earlier articles in this series, if you haven't already done so.

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iTextSharp - Adding Text with Chunks, Phrases and Paragraphs

18 October 2008 22:32

C# ASP.NET 3.5 iTextSharp

This is the third in a series of articles that looks at using the open source component, iTextSharp from within ASP.NET to generate PDFs. Just as HTML and ASP.NET provide containers for varying ampounts of textual content, iTextSharp offers the Chunk, Phrase and Paragraph classes. Before going on, if you would like to read earlier articles, they are:

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iTextSharp - Working with Fonts

15 October 2008 22:07

C# ASP.NET 3.5 iTextSharp

Following on from my introduction to iTextSharp, the free PDF utility that lets you work with PDF files within ASP.NET, this article looks at working with fonts in PDF documents that you create. If you haven't read the first article in this series, I recommend that you do so now.

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