DotNetKicks.com - Stories tagged with data

The Only Pattern for Data Access is There Are No Patterns for Data Acc

Tue, 23 Jun 2009 04:03:31 GMT

Over the years of software development, one thing that has eluded most developers is Data Access. Yes, I mean writing code that accesses a database from your application. It is an age old problem since the days when data storage and computing were invented. We would have thought that by now we would have been able to come up with a clean universal pattern for data access such as the M-V-C pattern for User Interfaces or the Singleton pattern or the Factory pattern.

A* pathfinding search in C# - Part 1

Sat, 20 Jun 2009 23:49:35 GMT

Standing on the shoulders of giants just like Eric Lippert, this is my try to create a running sample of the code he has presented in his magnific series of posts titled Path Finding Using A* in C# 3.0. Eric wrote the base structure of the A* pathfinding algorithm but didn't provide a complete running sample. I basically added some code I had already posted on the series of posts titled Breadth and depth first search and created some properties here and there to get the whole thing running. It's nothing more than code reuse. In this implementation you'll find interesting data structures as a priority queue and and immutable stack.

Dynamic Data: Tweaking the Filter Repeater

Fri, 26 Sep 2008 04:20:06 GMT

The default implementation of Dynamic Data provides a drop down list box for each foreign key and boolean field in a table. The drop down list allows you to filter the table with the value selected from the drop down list box. The figure below shows a view of the Product table from the AdventureWorksLT database. Several columns are not displayed because the scaffoldcolumnattribute was applied.

Free Data Structures and Algorithms book

Fri, 29 Aug 2008 11:43:02 GMT

This book written by Granville Barnett and Luca Del Tongo is part of an effort to provide all developers with a core understanding of algorithms that operate on various common, and uncommon data structures. Data Structures and Algorithms: Annotated Reference with Examples is completely free!

What's the difference between Bind and Eval

Fri, 01 Aug 2008 18:25:46 GMT

Data-binding expressions are contained within delimiters and use the Eval and Bind functions. The Eval function is used to define one-way (read-only) binding. The Bind function is used for two-way (updatable) binding. In addition to calling Eval and Bind methods to perform data binding in a data-binding expression, you can call any publicly scoped code within the delimiters to execute that code and return a value during page processing.

JSONLint - Online JSON Validator

Sat, 26 Jan 2008 17:21:25 GMT

A site that allows you to enter JSON text and check it for strict compliance against the standard (RFC 4627). Errors are pointed out with quite good accuracy, highlighting the offending area. The output is also pretty-formatted. The only downsite is that your JSON text is processed and validated on the server so don't use this facility to validate JSON text containing confidential or sensitive data.

Ajax Control Toolkit - Multipart Series Article

Mon, 14 Jan 2008 19:01:02 GMT

A multi-part series article on Ajax Control Toolkit.

Querying YouTube using C# and Google Data Client Libraries

Sat, 22 Dec 2007 21:16:02 GMT

Querying YouTube using C# and Google Data Client Libraries with example code to download.

Repeater, UpdatePanels und die Datenbindung (dt.)

Fri, 15 Jun 2007 06:41:19 GMT

(Embedding a UpdatePanel in a databound Repeater without using <%# ... %>) In dem Artikel geht es darum, wie man ein UpdatePanel in einem Repeater setzt - das ganze noch Datengebunden.

Microsoft Codename "Astoria": Data Services for the Web

Wed, 02 May 2007 17:31:02 GMT

The "data programmability" team at Microsoft is responsible for the various technologies developers use in applications to access and manipulate data. One of the topics we have been looking at lately is how "new" internet applications use data in the web environment. Project codename "Astoria" reflects our current thinking on the topic. Instead of telling "what we are going to build", we decided to make the bits and infrastructure public for the development community to look at and give us feedback.

Free Xceed DataGrid Control for WPF Released

Fri, 26 Jan 2007 03:14:08 GMT

Xceed has decided to release their fully-functional, professional-level WPF DataGrid control completely free. No, this isn't a time-limited or "lite" version of the control...it's the real deal. When you consider that WPF version 1.0 doesn't ship with a data grid control at all, you'll realize that an offer like this is very compelling.