@{ int x = 123; string y = "because."; }

<%int x = 123; string y = "because.";
%> 

<span>@model.Message</span>

<span><%: model.Message %></span>

<span>
@Html.Raw(model.Message) </span>

<span><%= model.Message %></span>

@foreach(var item in items) {<span>@item.Prop</span> }

<% foreach(var item in items) { %><span><%: item.Prop %></span> <% } %>

@if (foo) {<text>Plain Text</text> }

<% if (foo) { %> Plain Text
<% } %>

@ using (Html.BeginForm()) {<input type="text" value="input here"> }

<% using (Html.BeginForm()) { %><input type="text" value="input here"> <% } %>

@if (foo) {@:Plain Text is @bar }

Hi philha@example.com

<span>ISBN@(isbnNumber)</span>

<span>In Razor, you use the
@@foo to display the value
of foo</span>

@*
This is a server side
multiline comment
*@

<%--
This is a server side
multiline comment
--%>

@(MyClass.MyMethod<AType>())

@{Func<dynamic, object> b = @<strong>@item</strong>; } @b("Bold this")

Hello @title. @name.

Hello <%: title %>. <%: name %>.

<div class="@className"></div>

<div></div>

When className = ""

<div class=""></div>

When className = "my-class"

<div class="my-class"></div>

<div class="@className foo bar"> </div>

<div class="foo bar"></div>

Notice the leading space in front of foo is removed. 
When className = "my-class"

<div class="my-class foo bar"> </div>

data-* attributes are always rendered.

<div data-x="@xpos"></div>

<div data-x=""></div>

When xpos = "42"

<div data-x="42"></div>

<input type="checkbox"checked="@isChecked" />

<input type="checkbox"checked="checked" />

When isChecked = false

<input type="checkbox" />

<script src="~/myscript.js"></script>

<script src="/myscript.js"></script>

When running in a virtual application named MyApp

<script src="/MyApp/myscript.js"></script>