In ASP.NET Web Pages (Razor), there are several built-in objects that you can use to work with the web environment — such as requests, responses, cookies, sessions, files, and more.

These objects are similar to classic ASP and ASP.NET but tailored to the Razor syntax and simplified for ease of use.

? Common Web Pages Objects in ASP.NET

Here’s a list of the most-used objects in Web Pages and what they do:

1. Request

Used to access information sent by the browser to the server.

@{    var name = Request["name"]; // From query string or form    var userAgent = Request.UserAgent;}

2. Response

Used to send output or instructions back to the browser.

@{    Response.ContentType = "text/plain";    Response.Write("Hello, world!");    Response.End(); // Stop page processing}

3. Session

Stores user-specific data between page requests.

@{    Session["username"] = "john";    var name = Session["username"];}

4. Application

Stores data that is shared across all users of the app.

@{    Application["siteName"] = "My Website";    var site = Application["siteName"];}

5. Server

Provides server-side functions like URL encoding or error handling.

@{    var encoded = Server.HtmlEncode("<h1>Hello</h1>");}

6. File, Directory, FileSystem

Used to read/write files and folders on the server.

@{    var text = File.ReadAllText(Server.MapPath("~/data.txt"));    File.WriteAllText(Server.MapPath("~/output.txt"), "Hello!");}

7. WebSecurity, Crypto, AntiForgery

Used for authentication and security.

@{    var hashed = Crypto.HashPassword("mypassword");}

8. Model

When using data binding with forms or data objects:

@Model.Name

9. Validation

Used to perform validation checks on user input.

@{    if(!Validation.IsValid()) {        foreach (var error in Validation.GetErrors()) {            <p>@error.Message</p>        }    }}

10. Url

Helps generate URLs dynamically.

@Url.Content("~/images/logo.png")

? Summary Table

Let me know if you’d like examples of any specific object in use — like uploading files with Request.Files, or login with WebSecurity!