Using string interpolation, how to pad with a given character?

Question

I know I'm in danger here, but couldn't find in SO/Google:

Using string interpolation, how do I pad with a given character? for instance:

foreach (var p in people) {
    Console.WriteLine($"{p.Name,-10}: {p.Age}");
}

Will result in (e.g.):

Joe       : 26
Dan       : 52

How do I change the spaces with dots, via string interpolation? to get:

Joe.......: 26
Dan.......: 52

(I know I can do p.Name.PadRight(10,'.'), but I'm pretty sure there's a way with string-interpolation parameters, like the padding length).

Answer 1

@Tar why dont you try this:

var paddingWithChar = new string ('.', lengthOfPaddingAsInt); 

Console.WriteLine ($"{p.Name}{paddingWithChar}:{p.Age,10}");

Answer 2

Browsing through Microsoft's Docs for the alignment component for string formatting, I found this little excerpt.

If padding is necessary, white space is used.

You're stuck with whitespace if you're going to use string interpolation. As you noted earlier, string.PadRight() will suffice as a workaround.