能否在 PowerShell 扩展字符串中直接使用格式说明符？

Question

在 PowerShell 中，我可以使用扩展字符串将变量值插入字符串 (Answer with more details about that):

PS C:\> $UtcNow = [DateTime]::UtcNow
PS C:\> "UtcNow = $UtcNow"
UtcNow = 08/10/2020 09:31:51

我可以使用 String.Format 或 -f 运算符来做，但我可以提供格式说明符：

PS C:\> "UtcNow = {0:u}" -f $UtcNow
UtcNow = 2020-08-10 09:31:51Z

PS C:\> [string]::Format("UtcNow = {0:u}", $UtcNow)
UtcNow = 2020-08-10 09:31:51Z

问题：有没有办法在和扩展字符串中使用格式说明符？

我试过的

PS C:\> "UtcNow = $UtcNow:u"   # Doesn't work
UtcNow = 

PS C:\> "UtcNow = ${UtcNow:u}"   # Doesn't work
UtcNow = 

PS C:\> "UtcNow = $($UtcNow.ToString("u"))"  # Works, but is quite cumbersome
UtcNow = 2020-08-10 09:31:51Z

Answer 1

不，PowerShell 中的可扩展字符串不计算格式说明符

-f 是要走的路:)