Multiline C# interpolated string literal

Question

C# 6 brings compiler support for interpolated string literals with syntax:

var person = new { Name = \"Bob\" };

string s = $\"Hello, {person.Name}.\";


        

Answer 1

Personally, I just add another interpolated string using string concatenation

For example

var multi  = $"Height     : {height}{Environment.NewLine}" +
             $"Width      : {width}{Environment.NewLine}" +
             $"Background : {background}";

I find that is easier to format and read.

This will have additional overhead compared to using $@" " but only in the most performance critical applications will this be noticeable. In memory string operations are extremely cheap compared to data I/O. Reading a single variable from the db will take hundreds of times longer in most cases.

Answer 2

You can combine $ and @ together to get a multiline interpolated string literal:

string s =
$@"Height: {height}
Width: {width}
Background: {background}";

Source: Long string interpolation lines in C#6 (Thanks to @Ric for finding the thread!)

Answer 3

I'd probably use a combination

var builder = new StringBuilder()
    .AppendLine($"Width: {width}")
    .AppendLine($"Height: {height}")
    .AppendLine($"Background: {background}");