为什么我不能在没有括号的内插字符串中使用条件运算符？
Why can't I use the conditional operator in an interpolated string without brackets?
为什么我不能在 c#-6 字符串插值中使用内联条件运算符，而不用括号括起来？
和错误：
如您所见，解析器似乎遇到了困难。这是一个错误，还是字符串插值机制的一个特性？
来自 MSDN（强调我的）：
$"{person.Name, 20} is {person.Age:D3} year {(p.Age == 1 ? "" : "s")} old."
You do not need to quote the quotation characters within the contained interpolation expressions because interpolated string expressions start with $, and the compiler scans the contained interpolation expressions as balanced text until it finds a comma, colon, or close curly brace. For the same reasons, the last example uses parentheses to allow the conditional expression (p.Age == 1 ? "" : "s") to be inside the interpolation expression without the colon starting a format specification. Outside of the contained interpolation expression (but still within the interpolated string expression) you escape quotation characters as you normally would.
没有括号，解析器会将冒号后的部分视为 format specifier（比较上面示例的 {person.Age:D3} 部分）。
为什么我不能在 c#-6 字符串插值中使用内联条件运算符，而不用括号括起来？
和错误：
如您所见，解析器似乎遇到了困难。这是一个错误，还是字符串插值机制的一个特性？
来自 MSDN（强调我的）：
$"{person.Name, 20} is {person.Age:D3} year {(p.Age == 1 ? "" : "s")} old."You do not need to quote the quotation characters within the contained interpolation expressions because interpolated string expressions start with $, and the compiler scans the contained interpolation expressions as balanced text until it finds a comma, colon, or close curly brace. For the same reasons, the last example uses parentheses to allow the conditional expression
(p.Age == 1 ? "" : "s")to be inside the interpolation expression without the colon starting a format specification. Outside of the contained interpolation expression (but still within the interpolated string expression) you escape quotation characters as you normally would.
没有括号，解析器会将冒号后的部分视为 format specifier（比较上面示例的 {person.Age:D3} 部分）。