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In an interpolated string, how do you utilize the ternary operator?


I’m not sure why this code isn’t compiling:

var result = $"{fieldName}{isDescending ? " desc" : string.Empty}";

It works perfectly if I divide it into two parts:

var desc = isDescending ? " desc" : string.Empty;
var result = $"{fieldName}{desc}";

Asked by Nate Barbettini

Solution #1

According to the paperwork:

The problem is that the colon is used to denote formatting, like:

Console.WriteLine($"The current hour is {hours:hh}")

Wrapping the conditional in parenthesis is the solution:

var result = $"Descending {(isDescending ? "yes" : "no")}";

Answered by Nate Barbettini

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