Interpolated strings from regex to string

Question

I have a line that looks like this:

string foobar = "foo{bar}";
string bar= "bar";
Console.WriteLine(foobar);

is there a fine way to make foobar an interpolated string after it has been declared?

I know I can do this, but I am not getting foobar as an interpolated string

string bar= "bar";
string foobar= $"foo{bar}";
Console.WriteLine(foobar);

or like this, but I'm wondering if there is a nicer way to do this

string foobar = "foo{bar}";
string bar= "bar";
Console.WriteLine(foobar.Replace("{bar}", bar);

+3

Emil ekman Apr 26. 17 at 7:38

1 answer

Kempeth · Accepted Answer · 2017-04-26T07:46:17+0000

String interpolation is compile time only because it depends on the presence of reference variables.

Use something like this:

var foo = "foo{0}";
var bar = "bar;
Console.WriteLine(String.Format(foo, bar));