Asp net page not validating
The initialization code is combined with user-written code (usually by the assembly of multiple partial classes) and results in a class specific for the page. Actual requests for the page are processed through a number of steps.
First, during the initialization steps, an instance of the page class is created and the initialization code is executed.
server-side web application framework designed for web development to produce dynamic web pages. This practice is automatic in Visual Studio and other IDEs, though the user can change the code-behind page.
It was developed by Microsoft to allow programmers to build dynamic web sites, web applications and web services. Also, in the web application format, the cs is a partial class that is linked to the pagename.file.
Let's give it a try, and add a Required Field Validator to our page.