如何检测Azure Add-AzureAccount登录是否失败或被取消？

在我使用的 Azure PowerShell 脚本中Add-AzureAccount将用户登录到 Azure。但是如何检测用户是否未成功完成登录以便我可以中止脚本？

另一种方法是使用 try 和 catch 块。

try {
    Add-AzureAccount -ErrorAction Stop
}

catch {
    Write-Error $_.Exception.Message
}

#Write the remaining script here
#Control won't come here unless the Add-AzureAccount was successful

Write-Verbose 'User logged in'

但是，任何 Microsoft 帐户都可以登录，即使它们没有任何关联的订阅。所以，这里有一些修改过的代码。

try {
    $a = Add-AzureAccount -ErrorAction Stop
    if ($a.Subscriptions) {
        Write-Verbose 'User Logged in'
    } else {
        throw 'User logged in with no subscriptions'
    }
}

catch {
    Write-Error $_.Exception.Message
}

#Write the remaining script here
#Control won't come here unless the Add-AzureAccount was successful