DotNetKicks.com : Stories kicked by hwaheed

Unity - Dependency Injection and Inversion of Control Container

Tue, 09 Sep 2008 22:01:14 GMT

Dependency injection is a programming technique to reduce component coupling. Dependency injection is also commonly known as "inversion of control" or IoC or sometimes as The Hollywood Principle - "Don't call us, we'll call you". The goal of dependency injection is to separate the concerns of how a dependency is obtained from the core concerns of a boundary. This improves reusability by enabling components to be supplied with dependencies which may vary depending on context.

Table-Value Parameters in SQL Server 2005

Sun, 03 Aug 2008 07:06:51 GMT

In pre-SQL Server 2005 in order to pass in a set of values one had to create a temporary table, populate it with data using INSERT, and then just use it in the procedure or function since they are created for the current session and are available to all processes in that session. I did a blog on how to pass in Table-Value Parameters in SQL Server 2008 but what if we have a need to pass in multiple rows of data to a T-SQL statement, or a routine such as stored procedure or function in SQL Server 2005?

Maintain Browser History with AJAX

Mon, 28 Jul 2008 04:08:11 GMT

The article aims at understanding History Points in AJAX that allow the browser to keep track of AJAX steps and therefore move through them using forward and backward buttons.

Forms Authentication Timeout vs Session Timeout

Thu, 17 Jul 2008 07:10:33 GMT

If we set the forms authentication and session timeouts to 10 minutes and after the 10th minute the user clicked on any link the app would redirect the user to the login page but the session was not abandoned i.e. the forms authentication ticket had expired but not the session state timeout.

Don't Use SELECT *

Tue, 08 Jul 2008 00:16:10 GMT

I've seen many developers actually using and abusing SELECT * FROM queries. SELECT * query not only returns unnecessary data, but it also can force clustered index scans for query plans because columns in the SELECT clause are also considered by the optimizer when it identifies indexes for execution plans.

ASP.NET Performance Tips

Tue, 01 Jul 2008 17:31:03 GMT

The article lists few of some of the many performance tweaks that can be implement to boost up ASP.NET performance.

Difference between LINQ to SQL and the Entity Framework

Tue, 01 Jul 2008 06:16:02 GMT

LINQ to SQL and the Entity Framework have a lot in common, but each have features targeting different scenarios.

Dependency Injection: Factory vs Container - Unity

Mon, 30 Jun 2008 08:19:25 GMT

As application size and complexity increase it becomes more and more difficult to reuse existing components and integrating these components to form an interconnected architecture because of the dependencies of the components. One way to reduce dependencies is by using Dependency Injection, which allows you to inject objects into a class, rather than relying on the class to create the object itself.

Serialize & Deserialize JSON Data

Sat, 28 Jun 2008 11:42:25 GMT

The article features on the in built support in .NET and JavaScript for JSON serialization, that can further be used for developing AJAX web services.

SQL Server 2008 Data Compression Part-1

Sat, 28 Jun 2008 06:12:44 GMT

The article provide a breif introduction of new data compression feature in SQL Server 2008.

ASP.NET Session State and Velocity Provider

Tue, 10 Jun 2008 17:51:56 GMT

Using "Velocity" Distributed Cache for ASP.NET session store

Preventing SQL injection attacks in ASP.NET

Fri, 30 May 2008 05:36:12 GMT

SQL injection can occur when an application uses input to construct dynamic SQL statements or when it uses stored procedures to connect to the database. Conventional security measures, such as the use of SSL and IPSec, do not protect your application from SQL injection attacks. Successful SQL injection attacks enable malicious users to execute commands in an application's database. You should always be reviewing your code to find these or other security vulnerabilities; remember all type of attacks start with some input, and your first line of defense should be input validation using both client-side and server-side validation.

Create AJAX Validator Control

Sun, 25 May 2008 07:07:38 GMT

Imagine that you are creating a website registration form and you need to validate a Login ID or Email field. You want to make sure that the Login ID or Email entered does not already exist in the database...