ASP.NET Web Pages - Databases

This chapter is about working with databases.

What We Will Do

In this chapter we will:

  • Create a web page to list data from a database

Displaying Data from Database

With Web Pages, you can easily display data from a database.

You can connect to an existing database, or create a new database from scratch.

In this example we will connect to an existing SQL Server Compact database.

If you want to learn how to create a database for your web, please go to the chapter Web Database.

Adding a Customers Page

In the "DemoWebPages" folder, create a new CSHTML file named "Products.cshtml".

Replace the code in the file with the code from the example below:


var db = Database.Open("SmallBakery"); 
var selectQueryString = "SELECT * FROM Product ORDER BY Name"; 

<h1>Small Bakery Products</h1> 
@foreach(var row in db.Query(selectQueryString))

<td align="right">@row.Price</td> 
Run example »

Example Explained

The Database.Open(name) method will connect to a database in two steps:

First, it searches the application's App_Data folder for a database that matches the name parameter without the file-name extension.

If no file is found, it looks for a "connection string" in the application's Web.config file.

(A connection string contains information about how to connect to a database. It can include a file path, or the name of an SQL database, with full user name and password)

This two-step search makes it possible to test the application with a local database, and run the application on a web host using a connection string.