How To Connect To A Database

I moved to ASP.NET from PHP where the queries are run directly. So I always create Connection in the Page_Load Event, dispose it after I do all stuff needed, and access data with NpgsqlCommand. (Yes, I use Postgresql in my ASP.NET applications.)

After starting to learn ASP.NET MVC I was amazed how easy it is to access SQL with the LINQ to SQL thing. But... It works only with MS SQL. So my question is how to implement the same functionality in my applications? How to connect to databases easily?

I wrote my own wrapper classes for connecting to Postgresql. 1 class per a table.

This is a part of the Student class:

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So as you see the problem here is that with every INSERT, DELETE, UPDATE request I'm using Connect() method which connects to the database. I didn't realize how stupid it was before I had to wait for 10 minutes to have 500 rows inserted, as there were 500 connections to the database.Using pooling while connecting does help, but still making the connection and making the server check the pool during every single query is stupid.So I decided to move Connection property to a static DB class, and it didn't work either, because it's a really bad idea to store such objects as connections in a static class.I really don't know what to do know. Yes, there's an option of manullay creating the connections in every Page_Load event and close them in the end like I'm doing it right now.

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