You can use XML Literals to achieve a similar effect:
Imports System.XML
Imports System.XML.Linq
Imports System.Core
Dim s As String = <a>Hello
World</a>.Value
Remember that if you have special characters, you should use a CDATA block:
Dim s As String = <![CDATA[Hello
World & Space]]>.Value
2015 UPDATE:
Multi-line string literals were introduced in Visual Basic 14 (in Visual Studio 2015). The above example can be now written as:
Dim s As String = "Hello
World & Space"
MSDN article isn't updated yet (as of 2015-08-01), so check some answers below for details.
Details are added to the Roslyn New-Language-Features-in-VB-14 Github repository.
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