How to specify long string literals in Visual Basic .NET?

Question

Is there a way to conveniently store long string literal in Visual Basic source? I\'m composing a console application with --help printout let\'s say 20 lines l

Answer 1

You can also simply use a text resource (Project -> Properties -> Resources) and access them in your code via My.Resources.NameOfTheResource.

Answer 2

Update:

In VB.NET 14, which comes with Visual Studio 2015, all string literals support multiple lines. In VB.NET 14, all string literals work like verbatim string literals in C#. For instance:

Dim longString = "line 1
line 2
line 3"

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Original Answer:

c# has a handy multi-line-string-literal syntax using the @ symbol (called verbatim strings), but unfortunately VB.NET does not have a direct equivalent to that (this is no longer true--see update above). There are several other options, however, that you may still find helpful.

Option 1: Simple Concatenation

Dim longString As String =
    "line 1" & Environment.NewLine &
    "line 2" & Environment.NewLine &
    "line 3"

Or the less .NET purist may choose:

Dim longString As String =
    "line 1" & vbCrLf &
    "line 2" & vbCrLf &
    "line 3"

Option 2: String Builder

Dim builder As New StringBuilder()
builder.AppendLine("line 1")
builder.AppendLine("line 2")
builder.AppendLine("line 3")
Dim longString As String = builder.ToString()

Option 3: XML

Dim longString As String = <x>line 1
line 2
line 3</x>.Value

Option 4: Array

Dim longString As String = String.Join(Environment.NewLine, {
    "line 1",
    "line 2",
    "line 3"})

Other Options

You may also want to consider other alternatives. For instance, if you really want it to be a literal in the code, you could do it in a small c# library of string literals where you could use the @ syntax. Or, you may decide that having it in a literal isn't really necessary and storing the text as a string resource would be acceptable. Or, you could also choose to store the string in an external data file and load it at run-time.

Answer 3

In VB.net you can simply write "& _" at the end of your string literal to have multi-line strings.