Razor is an ASP.NET programming syntax used to create dynamic web pages with the C# or VB.NET programming languages. Razor was in development in June 2010[3] and was released for Microsoft Visual Studio 2010 in January 2011.[4] Razor is a simple-syntax view engine and was released as part of MVC 3 and the WebMatrix tool set.[4]

Initial releaseJune 2010 (2010-06)
Stable release
3.2.7 / November 29, 2018 (2018-11-29)[1]
Preview release
4.0.0-rc1 / November 18, 2015 (2015-11-18)
Written inC#, VB.NET, HTML
Operating systemMicrosoft Windows
TypeWeb application framework
LicenseApache License 2.0[2]
Razor file formats
Filename extension.cshtml, .vbhtml
Internet media typetext/html
Developed byMicrosoft

Razor became a component of AspNetWebStack and then became a part of ASP.NET Core.


The Razor syntax is a template markup syntax, based on the C# programming language, that enables the programmer to use an HTML construction workflow. Instead of using the ASP.NET Web Forms (.aspx) markup syntax with <%= %> symbols to indicate code blocks, Razor syntax starts code blocks with an @ character and does not require explicit closing of the code-block.

The idea behind Razor is to provide an optimized syntax for HTML generation using a code-focused templating approach, with minimal transition between HTML and code.[5] The design reduces the number of characters and keystrokes, and enables a more fluid coding workflow by not requiring explicitly denoted server blocks within the HTML code.[3] Other advantages that have been noted:[6]

See also


  1. "Microsoft ASP.NET Razor". NuGet.
  2. "Razor/LICENSE.txt at master · aspnet/Razor · GitHub". GitHub.
  3. "ScottGu's Blog - Introducing "Razor" – a new view engine for ASP.NET".
  4. "MSDN Blogs". Microsoft. Archived from the original on 2012-07-02. Retrieved 2011-07-08.
  5. Jon Galloway. "MVC 3 - Razor View Engine". The Official Microsoft ASP.NET Site.
  6. "ASP.NET MVC View Engine Comparison".
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