Share the ASP. NET Learning Notes (5) global page AppStart and Pagestart

This chapter describes global pages AppStart and Pagestart.

Before the Web starts: _appstart

Most of the server-side code is written on the personal page. For example, if the page contains an input form, the page typically contains server-side code to read the form data.

However, you can start code execution before the site starts by creating a page named _appstart under your site's root directory. If this page is present, ASP. NET will run this page first when other pages in the site are requested.

The typical use of _appstart is to start code and initialize global values (such as counters and global names).

Note 1:_appstart has the same file name extension as your Web page, such as: _appstart.cshtml.

Note The 2:_appstart has an underscore prefix. Therefore, these files cannot be browsed directly.

Before each page: _pagestart

Just as _appstart runs before your site starts, you can write code that runs before any page in each folder.

For each folder in your site, you can add a file named _pagestart.

How does it work?

Shows how it works:

When a request is received, ASP. NET first checks to see if the _appstart exists. If _appstart exists and this is the first request received by the site, run _appstart.

Then ASP. NET checks if the _pagestart exists. If _pagestart exists, run _pagestart before the other requested page runs.

You can call Runpage () in _pagestart to specify where the requested page will run. Otherwise, by default, the requested page is run after _pagestart is run.

"Recommended"

1. ASP. NET free Video Tutorials

2. Share the ASP. NET Learning Notes (1)--webpages Razor

3. Share the ASP. NET Learning Notes (2)--webpages Introduction

4. Share the ASP. NET Learning Notes (3) Webpages layout

5. Share the ASP. NET Learning Notes (4) folder