CreateSites: ASP.NET Razor

Tuesday, July 5, 2011

ASP.NET Razor - Code Syntax

Razor is a server side markup language. Razor code starts with @.

Important Razor Syntax Rules

Razor code starts with @
Code blocks are enclosed in braces
Code statements end with semicolon
Variables are declared with the var keyword
Strings are enclosed with quotation marks

Razor Code Starts with @

The @ character starts single statement blocks, multi-statement blocks, and inline expressions:

@{ var total = 7; }
@{ var myMessage = "Hello World"; }


The value of your account is: @total
The value of myMessage is: @myMessage


@
{
var greeting = "Welcome to our site!";
var weekDay = DateTime.Now.DayOfWeek;
var greetingMessage = greeting + " Today is: " + weekDay;
} The greeting is: @greetingMessage

Code Blocks are Enclosed in Braces

A code block includes one or more statements enclosed in braces.

@{ var theMonth = DateTime.Now.Month; }
The numeric value of the current month: @theMonth


@
{
var outsideTemp = 79;
var weatherMessage = "Hello, it is " + outsideTemp + " degrees.";
}
Today's weather: @weatherMessage

Code Statements End With Semicolon

Inside a code block, each code statement must end with a semicolon. Inline expressions don't end with a semicolon.

@{ var theMonth = DateTime.Now.Month; }


@
{
var outsideTemp = 79;
var weatherMessage = "Hello, it is " + outsideTemp + " degrees.";
}


Today's weather: @weatherMessage

The var Keyword Declares Variables

You can store values in variables, including strings, numbers, and dates, etc. You create a variable using the var keyword.

@{ var welcomeMessage = "Welcome, new members!"; }
@welcomeMessage


@{ var year = DateTime.Now.Year; }


Welcome to our new members who joined in @year!

Strings are Enclosed with Quotation Marks

A string is a sequence of characters that are treated as text. To specify a string, you enclose it in double quotation marks:

@{ var welcomeMessage = "Welcome, new members!"; }