Question

我正在尝试处理因Microsoft Online PowerShell cmdlet使用错误的用户名和密码而导致的异常错误（来自ASP.NET网站内部）。这是一段代码：

PowerShell.Runspace = myRunSpace

Dim connect As New Command("Get-MSOnlineUser")
connect.Parameters.Add("Enabled")

Dim secureString As New System.Security.SecureString()
Dim myPassword As String = "Password"

For Each c As Char In myPassword
        secureString.AppendChar(c)
Next

connect.Parameters.Add("Credential", New PSCredential("admin@username.apac.microsoftonline.com", secureString))
PowerShell.Commands.AddCommand(connect)

Dim results As Collection(Of PSObject) = Nothing
Dim errors As Collection(Of ErrorRecord) = Nothing

results = PowerShell.Invoke()

Try
        results = PowerShell.Invoke()
Catch ex As Exception

End Try

errors = PowerShell.Streams.[Error].ReadAll()

如果我删除了Try / Catch块，则会收到Unhandled Exception错误：Credentials无效。检查用户名和密码，然后重试。但是，使用Try / Catch块时，结果或错误集合都不包含任何内容。

如何正确捕获此错误，以便向用户显示“无效的用户名或密码”？

Answer 1

您正在寻找的是：

$_.Exception.Message

此变量保存最新的异常错误。所以在纯PowerShell中，我执行错误处理，如：

try
{
   #Some cmdlet likely to throw exception
}
catch [system.exception]
{
   Write-host "Exception String:"+$($_.Exception.Message)"
   #do some error handling
}

问候 Arcass

如何在PowerShell中捕获未处理的错误

1 个答案: