C# Razor Syntax Quick Reference

C# Razor Syntax Quick Reference

C# Razor 문법 기존 웹폼 레퍼런스와의 차이점. 출처 : http://haacked.com/archive/2011/01/06/razor-syntax-quick-reference.aspx

• 발음 : 레이저 (Razor)
• @으로 표현
• ASP.NET 엔진과 별개로 동작
• Razor Template + Data = Output

Syntax/Sample	Razor	Web Forms Equivalent (or remarks)
Code Block	@{ int x = 123; string y = "because."; }	<% int x = 123; string y = "because."; %>
Expression (Html Encoded)	<span>@model.Message</span>	<span><%: model.Message %></span>
Expression (Unencoded)	<span> @Html.Raw(model.Message) </span>	<span><%= model.Message %></span>
Combining Text and markup	@foreach(var item in items) { <span>@item.Prop</span> }	<% foreach(var item in items) { %> <span><%: item.Prop %></span> <% } %>
Mixing code and Plain text	@if (foo) { <text>Plain Text</text> }	<% if (foo) { %> Plain Text <% } %>
Mixing code and plain text (alternate)	@if (foo) { @:Plain Text is @bar }	Same as above
Email Addresses	Hi philha@example.com	Razor recognizes basic email format and is smart enough not to treat the @ as a code delimiter
Explicit Expression	<span>ISBN@(isbnNumber)</span>	In this case, we need to be explicit about the expression by using parentheses.
Escaping the @ sign	<span>In Razor, you use the @@foo to display the value of foo</span>	@@ renders a single @ in the response.
Server side Comment	@* This is a server side multiline comment *@	<%-- This is a server side multiline comment --%>
Calling generic method	@(MyClass.MyMethod<AType>())	Use parentheses to be explicit about what the expression is.
Creating a Razor Delegate	@{ Func<dynamic, object> b = @<strong>@item</strong>; } @b("Bold this")	Generates a Func<T, HelperResult> that you can call from within Razor. See this blog post for more details.
Mixing expressions and text	Hello @title. @name.	Hello <%: title %>. <%: name %>.
NEW IN RAZOR v2.0/ASP.NET MVC 4
Conditional attributes	<div class="@className"></div>	When className = null <div></div> When className = "" <div class=""></div> When className = "my-class" <div class="my-class"></div>
Conditional attributes with other literal values	<div class="@className foo bar"> </div>	When className = null <div class="foo bar"></div> Notice the leading space in front of foois removed.  When className = "my-class" <div class="my-class foo bar"> </div>
Conditional data-* attributes.  data-* attributes are always rendered.	<div data-x="@xpos"></div>	When xpos = null or "" <div data-x=""></div> When xpos = "42" <div data-x="42"></div>
Boolean attributes	<input type="checkbox" checked="@isChecked" />	When isChecked = true <input type="checkbox" checked="checked" /> When isChecked = false <input type="checkbox" />
URL Resolution with tilde	<script src="~/myscript.js"> </script>	When the app is at / <script src="/myscript.js"> </script> When running in a virtual application named MyApp <script src="/MyApp/myscript.js"> </script>