> For the complete documentation index, see [llms.txt](https://suyashs-organization-3.gitbook.io/csitlabs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://suyashs-organization-3.gitbook.io/csitlabs/6th_semester/net_centric_computing/lab-codes/practical3/razor-syntax.md).

# Razor Syntax

* Razor is a markup syntax for embedding .NET-based code into webpages.
* It consists of Razor markup, C# and HTML.
* Razor files have the .cshtml extension.
* Razor syntax is used in ASP.NET Core MVC views.
* Razor syntax is used to create dynamic content in views, ie. server-side code in views.

*Note*: The source code for this practical can be found [**here**](https://github.com/sthsuyash/CSIT_Labs/blob/main/6th_Semester/NET_Centric_Computing/Lab%20Codes/Practical3/MVC%20Demonstration/Views/Home/Index.cshtml).

## Rendering HTML

* The default Razor language is HTML.
* HTML markup in .cshtml Razor files is rendered by the server unchanged.
* For example:

  ```html
  <p>@Username</p>
  ```
* To escape an @ symbol in Razor markup, use a second @ symbol:

  ```html
  <p>@@Username</p>
  ```

## Implicit Razor Expressions

* Implicit expressions start with @ followed by C# code.
* Examples:

  ```html
  <p>@DateTime.Now</p>
  <p>@DateTime.IsLeapYear(2016)</p>
  ```
* Avoid spaces within implicit expressions (except for the await keyword).

## Tag Helpers

* Tag Helpers resemble HTML tags and encapsulate server-side logic.
* Example using the LabelTagHelper:

  ```html
  <label asp-for="UserName">User Name:</label> <input asp-for="UserName" />
  ```