如何在PowerShell中使用ValidateLength属性？
PowerShell中的ValidateLength属性用于验证字符串的长度。通常，在没有提及属性的情况下，我们如何编写命令的方法是使用Length方法以及字符串的if/else条件。例如，
Function ValidateStorageName {
param (
[String]$StorageName
)
if(($StorageName.Length -gt 3) -and ($StorageName.Length -lt 15)) {
Write-Output "`nStorage Name validated"
} else {
Write-Output "`nStorage Name validation failed"
}
}输出-
PS C:\> ValidateStorageName -StorageName Alpha Storage Name validated PS C:\> ValidateStorageName -StorageName CN Storage Name validation failed
使用ValidateLength属性，如果条件不满足，则条件本身将起作用。
Function ValidateStorageName {
param (
[ValidateLength(3,15)]
[String]$StorageName
)
Write-Output "Storage Name validated"
}输出-
PS C:\> ValidateStorageName -StorageName Alpha Storage Name validated PS C:\> ValidateStorageName -StorageName CN ValidateStorageName: Cannot validate argument on parameter 'StorageName'. The cha racter length (2) of the argument is too short. Specify an argument with a length that is greater than or equal to "3", and then try the command again