.net Powershell regex.match（）元字符

这是我要选择的内容

$reg = [regex]"\bobject-group\b network Gateways[\s\S]*?(?=\nobject-group\b)"

我的表达式在Regex Tester上运行良好，但在Powershell上迁移时，我无法找出哪些元字符是错误的，但我没有得到任何结果。任何帮助都会令人惊讶吗

数据取自一个文件。并存储在一个文件中。想要的结果是

object-group network something
 network-object host blahblah
 network-object host blahblah
 network-object host blahblah
 network-object host blahblah
object-group network Gateways
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
object-group network baller
 network-object host blahblah
 network-object host blahblah
 network-object host blahblah

---

使用你发布的代码为我工作。我在PowerShell 4.0中，以下是我所做的：

object-group network Gateways
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh
     network-object blahblahbalh

---

如果你说了你想要匹配的内容的哪一部分，这将更容易理解。内容是变量还是文件？你说得很对。。。。更新-它存储在一个变量中，匹配项被添加到文章的底部。如果我有一个here字符串中的数据，这对我有效。变量是如何填充的？可能是字符串数组吗？同样，这在单个字符串中再次起作用。如果您正在使用get内容，请考虑使用原始交换机。

$reg = [regex]"\bobject-group\b network Gateways[\s\S]*?(?=\nobject-group\b)"
$str = @"
object-group network something
 network-object host blahblah
 network-object host blahblah
 network-object host blahblah
 network-object host blahblah
object-group network Gateways
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
object-group network baller
 network-object host blahblah
 network-object host blahblah
 network-object host blahblah
"@

> $($reg.Match($str)).Value
object-group network Gateways
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh
 network-object blahblahbalh