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c#string-interpolation
Volker
Volker

Reputation: 1817

How do I use string interpolation with string literals?

I'm trying to do something like

string heading = $"Weight in {imperial?"lbs":"kg"}"

Is this doable somehow?

Upvotes: 15

Views: 4157

Answers (2)

Roman
Roman

Reputation: 12171

You should add () because : is used also for string formatting:

string heading = $"Weight in {(imperial ? "lbs" : "kg")}";

Upvotes: 26

Thomas Weller
Thomas Weller

Reputation: 59238

Interpolated strings can contain formatting definitions which are separated from the variable name by colons. 

string formatted = $"{foo:c5}"; // 5 decimal places

Since the conditional operator (?:) also uses a colon, you have to use braces to make it clear for the compiler that you don't want a format specifier:

string heading = $"Weight in {(imperial?"lbs":"kg")}";

Upvotes: 14

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