In .Net 2.0, they introduced Generic Collections. You are able to put a type of object in an array list. For example , ArrayList <Cat> list = new ArrayList <Cat> In this list, all of objects are the instances of Cat Object. We do not need to casting the item and type safe in this list. But in the past time, I like to put a mixture of object types in an array list. Loop out each item and check its type. I used that a lot, when I parse the object from database and do some data mining tools.(Well, I did it in my spare time, of couse , not at work).I think this is a time to change this habit. This is a kind of hack.

Miscrosoft has lanched their new set of C# exam
Microsoft Certified Professional Developer (MCPD)

DataGird is a very useful in .Net.
But this is not very flexibility.
Today, I have spent an hour to find a solution to a customized button in DataGird.
Finally, this is better to use some javascripts.

I have done some developments in .Net and PHP.
There is a things I like .Net , rather than PHP.
That is the component-based design.
.Net allows me to use component-based design.
I can built the system part by part.

This is my frist project by using SharpDevelopment.

This program is to reslove the hostname to IP Address.

(23-05-2014) - I have updated this with sharpdevelopment 4.3.1, the project is more readable.

DNS Resolver