Share ASP.NET study notes (1)--WebPages Razor
In this tutorial, we will use Razor markup with C# and Visual Basic code.
What is Razor?
Razor is a markup syntax for adding server-based code to web pages
Razor has the functionality of traditional ASP.NET markup, but is easier to use and easier to learn
Razor is a server-side markup syntax, much like ASP and PHP
Razor supports C# and Visual Basic programming languages
Add Razor code
Remember the above The web page in the example chapter:
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>Web Pages Demo</title> </head> <body> <h1>Hello Web Pages</h1> </body> </html>
Now add some Razor code to the example:
Example
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>Web Pages Demo</title> </head> <body> <h1>Hello Web Pages</h1> <p>The time is @DateTime.Now</p> </body> </html>
The page contains normal HTML markup, but otherwise , and also adds an @-marked Razor code.
Razor code can complete a variety of actions on the server in real time and display the results. (You can specify formatting options, otherwise only the default items are displayed.)
Main Razor C# syntax rules
Razor code blocks are enclosed in @{ ... }
Inline expressions (variables and functions) start with @
Code statements end with semicolon
Variables are declared using the var keyword
Strings are enclosed in quotes
C# Code is case sensitive
C# The file extension is .cshtml
C# Example
<!-- Single statement block -->
@{ var myMessage = "Hello World"; }
<!-- Inline expression or variable -->
<p>The value of myMessage is: @myMessage</p>
<!-- Multi-statement block -->
@{
var greeting = "Welcome to our site!";
var weekDay = DateTime.Now.DayOfWeek;
var greetingMessage = greeting + " Today is: " + weekDay;
}
<p>The greeting is: @greetingMessage</p>Main Razor VB syntax rules
Razor code blocks are contained in @Code ... End Code
Inline expressions (variables and functions) start with @
Variables are declared using the Dim keyword
Strings are enclosed in quotation marks
VB code is not case-sensitive
The extension of the VB file is .vbhtml
Example
<!-- Single statement block --> @Code dim myMessage = "Hello World" End Code <!-- Inline expression or variable --> <p>The value of myMessage is: @myMessage</p> <!-- Multi-statement block --> @Code dim greeting = "Welcome to our site!" dim weekDay = DateTime.Now.DayOfWeek dim greetingMessage = greeting & " Today is: " & weekDay End Code <p>The greeting is: @greetingMessage</p>
[Related recommendations 】
1. ASP.NET free video tutorial
2. Share ASP.NET study notes--WebPages introduction
4. What is ASP.NET MVC? Summary of ASP.NET MVC
5. In-depth understanding of the differences between ASP.NET MVC and WebForm
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